True GDM Series Technical & Service Manual
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True GDM Series Technical & Service Manual

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Kenneth Wiliiams
April 1, 2025

I need a bulb for true refrigerator model GDM-05-S

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Summary of Contents for True GDM Series

  • Page 1 Technical Service Manual (All Models)

  • Page 2: Table Of Contents

    Polyol Ester Lubricant - The CFC Report _____________________________________________21 Service Contractors: Attention Please _________________________________________________22 Basic Refrigeration - The Capillary Tube System _______________________________________23 The Refrigeration Cycle ____________________________________________________________24 True’s Remote System - How it Works ________________________________________________25 Basic Refrigeration - Control of Liquid Refrigerant Floodback... __________________________26 General Maintenance & Repairs ___________________________________________________28...
  • Page 3 Index Page Glass Insert - Swing Door ________________________________________________________63-64 Glass Insert Gas Release (High Altitude Installation) ____________________________________65 GDM & T-Series IDLGlass Insert Replacement ________________________________________66 Replacement of Door Frame Heater on IDL Freezer Doors _______________________________67 IDL Door Wire Harness Replacement ______________________________________________68-69 Shimming the Glass Insert ________________________________________________________70-71 Lock Installations - GDM Single Swing Door (GDM-23/26) _______________________________72 Barrel Lock Installation (GDM Slide DoorModels) _____________________________________73 Slide Barrel Lock (Top View) ________________________________________________________74...

  • Page 4: Cabinet Installation And Set-Up

    CABINET INSTALLATION AND SET-UP Please read these instructions. Failure to follow maintenance guidelines may result in a n o n - w a r r a n t e d service call.

  • Page 5: Electrical Requirements

    ELECTRICAL REQUIREMENTS There are several factors that will affect the proper operation of your True unit. A m o n g these factors, the electrical installation is the most important and should always be checked before connecting your True cabinet as follows: 1.

  • Page 6: Conductors And Circuits

    CONDUCTORS AND CIRCUITS Wi re Gauge for 2% Voltage Drop in Supply Circ u i t s 115 Vo l t Distance In Feet To Center of Load A m p s 1 0 0 1 2 0 1 4 0 1 6 0 230 Vo l t s Distance In Feet To Center of Load...

  • Page 7: Cabinet Installation And Set-Up Checklist

    CABINET INSTALLATION AND SET UP CHECKLIST CABINET INSTALLATION AND SET UP CHECKLIST 1) Make sure cabinet is plugged into dedicated outlet. Before plugging in cabinet check to make sure voltage is adequate for your cabinet. Do not use an extension cord, this will void cabinet w a r r a n t y.

  • Page 8: Cabinet Installation And Set-Up (Swing & Slide Doors)

    NOTE C. Open the left door. Your True Merchandiser has been secured for safe shipping. During D. Remove the foam block from the installation, it is necessary to remove top channel behind the left door.

  • Page 9: Gdm/T - Series Freezers

    . with the rail. Install the desired number of shims, making B. Proper leveling of your True cooler is sure the slot of the shim is in contact with the ______ Installing Leg Levelers _______ critical to operating success.

  • Page 10: Remote Condensing Unit

    (less than 8˚ super- refrigeration. refrigeration system, a vacuum of at heat in freezers, 12˚ in coolers) adjust True Manufacturing Company least 500 microns must be drawn. Do expansion valve Clockwise, 1/2 a strongly recommends the use of not use the system’s compressor as a...

  • Page 11: Temperature Control Altitude Adjustment

    INSTALLATION INSTRUCTION TEMPERATURE CONTROL ALTITUDE ADJUSTMENT Chart Figure 1 Adjustment (based on 360°/ Height complete turn) 2000' 42° 3000' 78° 4000' 114° 5000' 150° 6000' 186° 7000' 222° 8000' 258° 9000' 294° 10,000' 330° Figure 2 This scale may be used as a guide for measuring degrees of rota-...

  • Page 12: Temperature Control Altitude Adjustment(New Temp. Control)

    INSTALLATION INSTRUCTION Danfoss Temperature Control Adjustment for High Altitude Applications Terms: Cut-out - Temperature sensed by the controller that shuts the compressor off. Cut-in - Temperature sensed by the controller that turns the compressor on. Instructions: ___________ STEP 1 ___________ Mechanical temperature controllers are affected when functioning at high alti- tude.

  • Page 13: Defrost Controls

    Defrost Time Clock Adjustment Recommended Defrost Settings True Manufacturing has factory set your defrost time clock to a recommended time and duration defrost scenario. All refrigeration equipment operating below 30˚F will accumulate frost on the evaporator coil and will require routine defrost. Your True equipment has been designed for three defrost periods (8:00 a.m., 12:00 p.m.
  • Page 14 DEFROST CONTROLS 2. TIME INITIATED, TIME TERMINATED Like in the time initiated, temperature terminated controls; these systems have a temperature sensor that will disconnect the heaters to keep the cabinet from over heating. However it won’t restart the freezing cycle until the control completes the factory set time, which in our case is usually 20 minutes.
  • Page 15 Notes...

  • Page 16: Preventative Maintenance

    PREVENTATIVE MAINTENANCE Please read these instructions. Failure to follow maintenance guidelines may cause a n o n - w a r r a n t e d cabinet repair service.

  • Page 17: Cabinet Maintenance Schedule

    CABINET MAINTENANCE SCHEDULE Monthly, Quarterly, and Yearly CABINET MAINTENANCE SCHEDULE MONTHLY 1. Check product temperature. 2. Brush off condenser coil. 3. Inspect lamps and lamp holder connections. QUARTERLY 1. Check physical condition of condenser coil and evaporator coil (straighten fins if necessary. 2.

  • Page 18: Condenser Cleaning

    GENERAL MAINTENANCE CONDENSER CLEANING Step 4 Step 6 REQUIRED TOOLS ____________ STEP 4 ____________ ____________ STEP 7 ____________ • Phillips Screwdriver Clean off accumulated dirt from condensing Replace cardboard cover. Carefully slide • Stiff Bristle Brush coil with a stiff bristle brush. compressor assembly back into position •...
  • Page 19 Notes...

  • Page 20: Refrigeration Section

    REFRIGERATION SECTION In this section you can find information that is helpful for the customer and the service technician to help you understand how our refrigeration system works along with how to diagnose and correct any problems that might arise.

  • Page 21: Polyol Ester Lubricant - The Cfc Report

    POLYOL ESTER LUBRICANT THE CFC REPORT - LEADING THE WAY INTO A NEW AGE Polyol Ester Lubricant After exhaustive research and testing, Copeland has packaged with much more care than conventional determined that PolyolEster (POE) lubricants pro- oils. Copeland has not tested all types of compressors vide the best combination of characteristics for use or all combinations of refrigerant and con-Industry with the new generation of chlorine-free refrigerant.

  • Page 22: Service Contractors: Attention Please

    15 min- utes maximum. 3) The appropriate new drier provided must be installed in the system. 4) Established industry procedures for recovery, evacuation, refrigerant charging and leak testing should be followed. TRUE MANUFACTURING COMPANY...

  • Page 23: Basic Refrigeration - The Capillary Tube System

    CFC & Refrigeration Basics BASIC REFRIGERATION THE CAPILLARY TUBE SYSTEM Evaporator Accumulator Condenser Filter- Drie Capillary Tube Heat Exchanger Suction Line Motor Compressor LOW PRESSURE HIGH PRESSURE LOW PRESSURE HIGH PRESSURE LIQUID LIQUID Starting at the Capillary Tube, refrigerant flows into gas to high pressure liquid.

  • Page 24: The Refrigeration Cycle

    ® ® Evaporator Fan Motor Evaporator Thermostat As air is pushed Senses evaporator through the temperature evaporator by the fan motors liquid @40°F cuts in - refrigerant absorbs starts compressor heat through the walls of the @18°F cuts out - evaporator coils and shuts compressor vaporizes - thus...

  • Page 25: True's Remote System - How It Works

    Whether the compressor is to be located above or sensing bulb has the same refrigerant that is used in below the evaporator, (True does not have control the refrigeration system. When hot air passes over over this), the suction will always have a “P” trap in the evaporator coil and warms the refrigerant, the case the compressor is installed overhead.

  • Page 26: Basic Refrigeration - Control Of Liquid Refrigerant Floodback

    CFC & REFRIGERATION BASICS BASIC REFRIGERATION Control of Liquid Refrigerant Floodback To The Compressor During Operation Liquid floodback during operation can be caused by fan failure, or dirty clogged filters that can reduce the heat Filter transfer rate to such a point that the liquid refrigerant floods through, instead of vaporizing.
  • Page 27 Notes...

  • Page 28: General Maintenance & Repairs

    GENERAL CABINET MAINTENANCE AND REPAIRS Using the following instructions you will be able to make cabinet exterior repairs along with other general cabinet repairs.

  • Page 29: Top Removal For Tbb And Tdd Units

    TOP REMOVAL FOR TBB & TDD UNITS TOP REMOVAL FOR TBB & TDD UNITS Disconnect the power to the unit. Locate and remove screws on the inside of the cabinet going through the evaporator housing and into the bot- tom of the counter top. Locate and remove the screws securing the line set cover to the top located to the left of the evaporator housing.

  • Page 30: Top Removal Fortd And T-Gc Units

    TOP REMOVAL FOR TD & T-GC UNITS TOP REMOVAL FOR TD & T-GC UNITS 1. Turn unit off and remove lids. 2. Remove screws along back of cabinet top. 3. Remove screws on each side, going through lid slide rails, inside cooler. 4.

  • Page 31: Tppcountertop Replacement Instructions

    TPP COUNTERTOP REPLACEMENT INSTRUCTIONS Unscrew top door hinges from countertop and remove doors. Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top drawer opening. Remove front louvered grill. Remove screw from L-bracket that connects countertop to cabinet. Remove screws from the following parts inside of cabinet.

  • Page 32: Top Removal For Various Coolers - Tssu, Twt, Tuc

    TOP REMOVAL FOR VARIOUS COOLERS TSSU,TWT,TUC 1. Disconnect power from cabinet. 2. Remove door(s) by removing the screws securing upper hinge to the counter top, and pull top of door towards you. 3. Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top drawer opening. 4.

  • Page 33: Top Removal Fortrcb 50 And 79

    TOP REMOVAL FOR TRCB 50 and 79 TRCB 50 and 79 1. Disconnect the power to the unit. 2. Remove drawers. 3. Remove condensing unit grill. 4. Locate & remove 2-2 3/4 inch screws in the black plastic trim in the top of each door or top drawer opening (if necessary remove mullion).

  • Page 34: End Cap Replacement-T-Series Swing Door

    INSTALLATION INSTRUCTION END CAP REPLACEMENT - T-SERIES SWING DOOR REQUIRED TOOLS Gently lift grill and slide away from side ___________ STEP 9 ___________ to receive replacement panel. Be careful Carefully bend 1 3/4" rear lip inward • Phillips Head Screwdriver not to disconnect wiring to thermometer.
  • Page 35 INSTALLATION INSTRUCTION END CAP REPLACEMENT - T-SERIES SWING DOOR (continued) ___________ STEP 13 ___________ Drill pilot holes for rivets using .30 drill bit. Four down the front edge, and three across top and bottom edges (see figure 5). ___________ STEP 14 ___________ Install rivets.

  • Page 36: Side Panel Replacement - Gdm Series

    INSTALLATION INSTRUCTION SIDE PANEL REPLACEMENT - GDM SERIES REQUIRED TOOLS ____________ STEP 3 ____________ ____________ STEP 6 ____________ • 1/8" drill Attach the other plastic extrusion to the Check to see that there is no gap under the • Rivet Tool bottom side corner of the cabinet (see illus- top and rear 3/4"...

  • Page 37: Side Panel Replacement - Gdm-33C-Pt

    INSTALLATION INSTRUCTION SIDE PANEL REPLACEMENT - GDM-33C-PT Figure 1. The pro c e d u re listed below will enable you ____________ STEP 2 ____________ ____________ STEP 4 ____________ to create a frame around the end panel and will secure your new replacement panel. Peel backing away from two-way tape and Anchor all three plastic extrusions with secure to black plastic extrusion.

  • Page 38: Floral Case Baffle Installation

    INSTALLATION INSTRUCTION FLORAL CASE BAFFLE INSTALLATION The baffle is installed on floral cabinets to slow the velocity of the air down. This will make the flowers last longer, because the pedals do not dry out as quickly. 1. Trim a small square out of top left side of baffle to accommodate the suction line. 2.

  • Page 39: Gdm-23Fc Mirror Retrofit Kit

    INSTALLATION INSTRUCTION GDM-23FC Mirror Retrofit Kit REQUIRED TOOLS Repeat on the opposite wall (adhesive WARNING backing is the only anchor for the mirror Do not over tighten screw to avoid • 1/16" Drill supports. cracking mirror. • 1/8" - 1/4" Shim (2) •...

  • Page 40: Undercounter Refrigerator/Freezer Perimeter Heater Wire Replacement

    INSTALLATION INSTRUCTION T W T,TUC,TSSU, and TPP PERIMETER HEATER REPLACEMENT POP RIVET VIEW REQUIRED TOOLS ___________ STEP 5 ___________ ___________ STEP 10 ___________ • Phillips Head Screwdriver Drill out pop-rivet in the bottom right Reinstall heater in the same manner. •...

  • Page 41: Gdm & T-Series Freezer Perimeter Heater Wire Replacement

    INSTALLATION INSTRUCTION GDM AND T-SERIES FREEZER PERIMETER HEATER WIRE REPLACEMENT REQUIRED TOOLS of the plastic trim where the pop __________ STEP 9 __________ rivet was removed so that the stain- • Phillips Head Screwdriver less trim slides beneath it. Drill out Replace inoperative heater wire loop, •...

  • Page 42: Td-Series And Glass Chillers

    TD-SERIES AND GLASS CHILLERS TD-Series and Glass Chillers Replacement of Lid Rails, Lid nized air deflector. This will aluminum rivets (2 each) in each Rail Trunions and Lid Gaskets expose the hidden screws hold- lid rail cover. ing trunions and lid rails to top Tools Required and any tape on the back side of Note:...

  • Page 43: Temperature Control Replacement For Cabinets Larger Than 1/3 Hpcompressors

    INSTALLATION INSTRUCTION TEMPERATURE CONTROL REPLACEMENT (For Cabinets With Larger Than 1/3 H.P. Compressors) STEP 2 WARNING: (Swing Door) (Slide Door) Failure to disconnect power to Remove Louvered Grill: Remove Louvered Grill: the unit may result in electrocution to field personnel. A.
  • Page 44 INSTALLATION INSTRUCTION TEMPERATURE CONTROL REPLACEMENT CONTINUED..___________ STEP 4 ___________ Relay Connection Mounting: A. With slotted screw driver and plastic mallet or hammer, drive out knock out positioned on left side of ballast box. (See Figure 3). Figure 3. Driving out knockout B.
  • Page 45 INSTALLATION INSTRUCTION TEMPERATURE CONTROL REPLACEMENT CONTINUED..___________ STEP 5 ___________ coil contacts Relay Temperature Control Wiring: A. Connect the wires included in kit pink white to the relay as follows: 1. Connect one black wire to one Coil of the normally opencontacts of the relay.
  • Page 46 INSTALLATION INSTRUCTION TEMPERATURE CONTROL REPLACEMENT CONTINUED..___________ STEP 6 ___________ Replace existing temperature control with new Danfoss control in repair kit: (See Figure 8). A. Connect one pink wire from old control to double terminal #4 on new temperature control. B.
  • Page 47 INSTALLATION INSTRUCTION TEMPERATURE CONTROL REPLACEMENT CONTINUED..___________ STEP 8 ___________ ___________ STEP 10 ___________ Replacing Louvered Grill: Unplug the cooler A. Reinstall grill by reversing earlier ___________ STEP 9 ___________ procedure. ___________ STEP 11 ___________ Checking Relay Operation: Re-connect Power Cord. A.

  • Page 48: Temperature Control Change-Out - Gdm

    INSTALLATION INSTRUCTION TEMPERATURE CONTROL CHANGE-OUT - GDM Permagum _________ STEP 7 ___________ Reach to the side of the evaporator coil and remove the permagum from around the control bulb. Completely remove the control bulb from the Figure 1. sleeve, and pull straight out after Temperature removing the permagum.

  • Page 49: Temperature Control Change-Out - Gdm & T-Series

    INSTALLATION INSTRUCTION TEMPERATURE CONTROL CHANGE-OUT - GDM AND T-SERIES Installing The New Control Figure 2. REQUIRED TOOLS Control Bulb • Permagum • Phillips Head Screwdriver Copper • Hex Head Driver Sleeve ____________ STEP 1 ____________ Insert the control bulb into the copper sleeve.

  • Page 50: Replacing Temperature Controls In Gdm-7, Gdm-10, & Gdm-12 Models

    INSTALLATION INSTRUCTION Replacing Temperature Controls in GDM-7, GDM-10, and GDM-12 Models Standard New Copper Copper Sleeve Extension Sleeve Permagum Temperature Evaporator Control ___________ STEP 1 ___________ ___________ STEP 6 ___________ ___________ STEP 9 ___________ Unplug Cooler and turn temperature Reach in to the side of the evaporator Gently push the control bulb through control to “off”...

  • Page 51: Surge Protector's For The Gdm-Series

    INSTALLATION INSTRUCTION SURGE PROTECTOR’S FOR THE GDM-SERIES SURGE PROTECTOR BALLAST BOX ACCESS CREATING WIRE CONNECTION FOR INSTALLATION SURGE PROTECTOR This instruction is Tr u e's recommended ____________ STEP 3 ____________ procedure for installing surge protection - ____________ STEP 5 ____________ part no.

  • Page 52: Surge Protector's For The Gdm-Series

    INSTALLATION INSTRUCTION SURGE PROTECTOR’S FOR THE GDM-SERIES ...Continued LOCATING POWER CORD c. Next, locate other loose pink wire in ____________ STEP 9 ____________ WIRING FOR CUTTING (cont.) ballast box, connect the remaining pink wire with in-line splice or butt a. Neatly replace wires into ballast box ____________ ...STEP 6 ____________ connector.
  • Page 53 Notes...

  • Page 54: Door And Lock Repair

    DOOR AND LOCK REPAIR In this section you will find instructions on how to replace or repair d o o r assemblies, along with how to field install locks on cabinets.

  • Page 55: Glass Insert - Slide Door

    Remove all four aluminum pieces. frame and press against the two-way ___________ STEP 1 ___________ tape. (The etched TRUE logo is posi- ___________ STEP 5 ___________ tioned on the tempered glass side.) Slide left door (door positioned on out- side track) to the right.

  • Page 56: Slide Door Instruction - To Improve Slide Door Closing

    INSTALLATION INSTRUCTION Slide Door Instruction - To improve slide door closing Check the cooler to see that it is level placing shims between frame and ___________ Gasket ____________ before searching for a solution. Place glass insert, and then reinstall the a level on the center of the lower chan- insert holders.

  • Page 57: Wiper Gasket Installation

    INSTALLATION INSTRUCTION Wiper Gasket Installation __________ STEP 1 __________ Before removing the doors from the cabinet, mark each door in the area REQUIRED TOOLS where the wiper gasket will be applied at the point of the center leg • Drill on the top and bottom door channels.
  • Page 58 INSTALLATION INSTRUCTION Removal and Installation of GDM & Old Style T-Series - Swing Door Figure 1 ___________ STEP 5 ___________ REQUIRED TOOLS Remove Door Stop Pin by placing a drift punch or 1/8" drill bit into the stop • Two Drift Punches pin hole two holes to the left (for right (or two 1⁄8"...

  • Page 59: Removal And Installation Of Gdm-Swing Door

    Maintain vertical pressure by or rubber hammer. resting door bottom on your knee When door hangs true, while squatting, or have someone tighten bolts. assist in order to re-attach lower hinge to cabinet.
  • Page 60 INSTALLATION INSTRUCTION TORSION SPRING REPLACEMENT New Style T-Series & GDM Radius Front- SWING DOOR NOTE: If the torsion spring is broken, Door there is no need for steps 1-4. Hinge Bracket Door Stop Door Hinge Shaft Nylon Door Hinge Block Washer Brass Bushing...

  • Page 61: Torsion Spring Replacement - Swing Door

    ___________ STEP 12 ___________ When door hangs true with cabinet, tighten bolts. Assemble bottom hinge. Place the hinge washer over the bottom hinge bracket, replace the thrust bear-...

  • Page 62: Idllamp Replacement

    INSTALLATION INSTRUCTION IDL Lamp Replacement Figure 1 ___________ STEP 1 ___________ ___________ STEP 4 ___________ ___________ STEP 7 ___________ Unplug the cooler. Install the new lamp by placing the Pull on bulb to make sure it is seated lamp terminals in the upper lamp hold- properly.

  • Page 63: Glass Insert - Swing Door

    If frame and press against the two-way necessary use heat gun or hair dryer tape. (The etched TRUE logo is posi- aimed in the space between glass insert tioned on bottom corner of the tem-...
  • Page 64 INSTALLATION INSTRUCTION GLASS INSERT - SWING DOOR ...CONTINUED Freezer - Glass Door Replacement Instruction ___________ STEP 10 ___________ REQUIRED TOOLS without damaging the heating element. If necessary use heat gun or hair dryer Place double sided tape on all edges of •...

  • Page 65: Glass Insert Gas Release (High Altitude Installation)

    Silicone between glass insert and door frame tape. (The etched TRUE logo is to lessen resistance of double-sided positioned on the tempered glass __________ STEP 1 __________ Slide left door (door positioned on tape.

  • Page 66: Gdm & T-Series Idlglass Insert Replacement

    Remove door gasket and back NOTE: eyes and hands when working plates from the top, bottom and Make sure the TRUE logo on the or handling this or any handle side. insert, is located outside at the other glass component.

  • Page 67: Replacement Of Door Frame Heater On Idl Freezer Doors

    2-blacks go to 2- Note: blacks on upper lamp socket. 1 red is ___________ STEP 1 __________ The etched TRUE logo is 115v lead to both frame and insert positioned on bottom corner of Disconnect electrical power to cabi- heaters.

  • Page 68: Idl Door Wire Harness Replacement

    INSTALLATION INSTRUCTION IDL Door-Wire Harness Replacement ___________ STEP 1 ___________ Unplug the cooler and door harness and remove louver grill. Remove “P” clip. Figure 1 ___________ STEP 2 ___________ Take the door off the cooler and place on a flat stable surface. Refer to Removal and Installation of GDM and T-Series Swing Door Instructions on...
  • Page 69 INSTALLATION INSTRUCTION IDL Harness Replacement ...Continued ___________ STEP 10 ___________ ___________ STEP 17 ___________ ___________ STEP 22 ___________ Check the physical dimension of the Replace the glass insert. Make sure Plug the harness receptacle into the new cord. If the new cord is thicker it double sided tape is not bunched or ballast receptacle and reinstall the is necessary to enlarge the hole in the...

  • Page 70: Shimming The Glass Insert

    INSTALLATION INSTRUCTION SHIMMING THE GLASS INSERT Under normal circumstances your True Merchandiser won’t require any type of adjustments, except for the ones already outline in your installation instructions. When install properly you will have a perfectly aligned piece of equipment. There will be however some occasions in which it will be necessary to go a little deeper in order to accomplish a perfect alignment.

  • Page 71: Shimming The Glass Insert

    INSTALLATION INSTRUCTION SHIMMING THE GLASS INSERT CONTINUED...

  • Page 72: Lock Installations - Gdm Single Swing Door (Gdm-23/26)

    (exploded view) Note: Gasket Lock Other single swing door Plate cabinets please consult True Inside of Manufacturing Technical Cooler Service at 800-325-6152. assembly from the exterior wall. Fasten ___________ STEP 3 ___________ assembly by attaching hex nut. A n c h o r Insert 3/4"...

  • Page 73: Barrel Lock Installation (Gdm Slide Doormodels)

    INSTALLATION INSTRUCTION BARREL LOCK INSTALLATION (GDM slide door models) REQUIRED TOOLS Foam Aluminum 3” Black plastic interior wall breaker strip • Drewel tool or sharp knife Foam Insulation • 3/4" hole saw Assembly 34 3/4” Screw • Pop rivet tool Latch 7/8”...

  • Page 74: Slide Barrel Lock (Top View)

    SLIDE BARREL LOCK (TOP VIEW) Aluminum interior wall 3” Black plastic breaker strip Foam Insulation Assembly Screw Latch Barrel Lock Lock Nut Vinyl end Retainer plate 3/4” Round hole...

  • Page 75: Slide Barrel Lock (Front View)

    SLIDE BARREL LOCK (FRONT VIEW) FOAM ˝ 7/8˝ Screw and latch tube Install in to back of door frame FOAM Door Frame Jamb Gasket...

  • Page 76: Lock Installation (Gdm-5 & Gdm-5Pt Swing Door Models)

    INSTALLATION INSTRUCTION LOCK INSTALLATION (GDM -5 & GDM-5PT swing door models) REQUIRED TOOLS • Tape Measure • 1/4” Drill • 2” Saw Drill Hole Saw • 3/4” Saw Drill Hole Saw ___________ STEP 4 ___________ ___________ STEP 9 ___________ • Straight Edge •...

  • Page 77: Ratchet Lock & Plastic Door Stop - Slide Door

    INSTALLATION INSTRUCTION RATCHET LOCK & PLASTIC DOOR STOP - SLIDE DOOR Figure 1 REQUIRED TOOLS ___________ STEP 4 ___________ • Drill With 1/8" Bit Using an Exacto knife or razor blade • 1/4" Nut Driver carefully cut rubber gasket along the •...

  • Page 78: Ratchet Lock & Plastic Door Stop - Slide Door

    INSTALLATION INSTRUCTION RATCHET LOCK & PLASTIC DOOR STOP - SLIDE DOOR ...Continued Plastic Door Stop Installation Instruction (Unnecessary if factory installed) REQUIRED TOOLS • Drill With 1/8" Bit • Phillips Head Screwdriver __________ STEP 1 __________ Remove left side door by lifting up and out of bottom track.

  • Page 79: Lock Installation - Td Models

    INSTALLATION INSTRUCTION LOCK INSTALLATION - TD Models REQUIRED TOOLS • Phillips screwdriver __________ STEP 1 __________ __________ STEP 2 __________ __________ STEP 3 __________ Remove original lid handle and Close lid completely. Slide ratchet Slide locking cylinder on ratchet replace with notched handle provided. bar through notched handle so the bar until snug against handle.

  • Page 80: General Instructions

    GENERAL INSTRUCTIONS In this section you find many different instructions from how to install castors to how to install vandal panels. If there are any questions or we do not cover your needs in this section, please call. Technical Service 1-800-325-6152...

  • Page 81: Overshelf Option - Tssu, Twt, Tuc

    INSTALLATION INSTRUCTION OVERSHELF OPTION - TSSU, TWT, TUC Congratulations on your purchase of an accessory that has been designed to efficiently assist your food preparation. The following instruction has been written to assist you in your overshelf installation. KIT CONTENTS •...

  • Page 82: Installing The Crumb Catcher

    TEMPLATE ANCHORING CRUMB INSTALLATION CATCHER ___________ STEP 2 ___________ This instruction is True’s recommend- ___________ STEP 5 ___________ ed procedure for installing the crumb Place the crumb tray on the cabinet catcher option. Remove any small burs from around counter-top so that it is equally the holes that have been drilled.

  • Page 83: Field Installing The Tssu Series 19" Cutting Board

    INSTALLATION INSTRUCTION FIELD INSTALLING THE TSSU SERIES 19” CUTTING BOARD This instruction is True’s recommend- rotation until resistance is felt. (over- ed procedure for installing the 19” tightening will strip rivnut) cutting board option. ___________ STEP 7 ___________ REQUIRED TOOLS When minor resistance is felt, rivnut •...

  • Page 84: Anchoring The Tssu Hood Cover

    INSTALLATION INSTRUCTION ANCHORING THE TSSU HOOD COVER This is Tr u e ’s recommended procedure for installing the fasteners required to connect the sandwich salad hood cover to the hood. See callout #1 on the i l l u s t r a t i o n . A S S E M B LY __________ STEP 1 __________ Locate the hood cover, (packaged...

  • Page 85: Installing The Ttpseries Service Shelf

    INSTALLATION INSTRUCTION INSTALLING THE TPP SERIES SERVICE SHELF (prior to NSF-7 recessed pan design) REQUIRED TOOLS b. Remove the service shelf. CAUTION • Pencil or Marker c. Lightly punch a starter mark and Do not turn hex wrench or rivnut •...

  • Page 86: Field Installing The Tppservice Shelf

    FIELD INSTALLING THE TPP SERVICE SHELF REQUIRED TOOLS • Pencil or Marker • Slotted Screwdriver • Center Punch • Power Drill • Masking tape SURFACE PREPARATION __________ STEP 1 __________ Tape off both sides of the elevated ingredient pan area where the over- shelf legs will be anchored.

  • Page 87: Sneezeguard Option - Tssu

    INSTALLATION INSTRUCTION SNEEZEGUARD OPTION - TSSU SNEEZE GUARD ASSEMBLY Figure 1. KIT CONTENTS ___________ STEP 3 ___________ ___________ STEP 7 ___________ • Clear Plastic Shield, 1 ea. Screw the bolts into the threaded Adjust the two support components so • Supports, 2 ea. inserts until they are hand tight.

  • Page 88: Castor And Leg Frame Installation

    CASTOR OR LEG FRAME INSTALLATION GDM & T-Series Castor or Leg Frame Installation GDM-61/69/72 will utilize 3 castor or leg frame assemblies.

  • Page 89: Gdm-33Cpt Castor Mounting Assembly

    INSTALLATION INSTRUCTION GDM-33CPT Castor Mounting Assembly...

  • Page 90: Knock-Out

    INSTALLATION INSTRUCTION TDD-1 CO Knock-out Knockout Plug This instruction is True's recommended procedure for installing a remote CO container. REQUIRED TOOLS ___________ STEP 2 ___________ • Pliers Use drill and bit to bore hole straight • Power Drill back through wall into compressor •...

  • Page 91: Tdd-2,3,4 (And Club Top Models) Co2 Knock-Out

    INSTALLATION INSTRUCTION TDD-2,3,4 (and Club Top models) CO Knock-out This instruction is True's recommended procedure for installing a remote CO container. REQUIRED TOOLS • Pliers • Power Drill • Silicone sealer • Drill bit, __________ STEP 2 __________ __________ STEP 3 __________ 1/2”...

  • Page 92: Vandal Panel Installation For A Gdm-33Cpt-54

    INSTALLATION INSTRUCTION Vandal Panel Installation for a GDM-33CPT-54 Kit Materials __________ STEP 2 __________ __________ STEP 4 __________ 1. (16) Pop Rivets Repeat Procedure for installation of The two other Mounting Brackets 2. (8) Mounting Brackets other vandal panel on back of cabi- are mounted 32 7/8”...

  • Page 93: Vandal Panel - Gdm-69

    INSTALLATION INSTRUCTION Vandal Panel - GDM-69 Figure 1. REQUIRED TOOLS ___________ STEP 7 ___________ • Drill - 1/4" Bit - 3/16" Bit Position one bracket "B" so that the • Pop-Rivet gun center of the bracket is 26 1/2" from •...
  • Page 94 INSTALLATION INSTRUCTION Vandal Panel - GDM-69 ...continued ___________ STEP 9 ___________ Repeat this operation for the right side. and the top is also indicated.) (templates are marked left and right When in place, drill with 3/16" bit and fasten with rivets. To Mount The Panels NOTE: The right side of the cooler is...
  • Page 95 Notes...

  • Page 96: Troubleshooting

    TROUBLESHOOTING This section provides troubleshooting instructions that will help a qualified service technician diagnose any problem you may be having with your cabinet. Because there is risk of electrocution if they are not followed correctly, a qualified service technician must be used when following these steps.

  • Page 97: Calibrate Temperature Control

    Cut In Cut Out For cooler calibration install ther- 800303 14.5 mometer in evaporator coil. Shut door 800306 and get true reading of where control is 800312 -8.5 -14.5 opening and closing. Watch to see at ___________ STEP 8 ___________ 800313 36.5...

  • Page 98: Calibrate Temperature Control

    INSTALLATION INSTRUCTION CALIBRATE TEMPERATURE CONTROL ..Continued Temperature Control ˚F ˚F Old Temperature Part Number Cut In Cut Out Control Part Number 800345 -2.5 15.5 800358 -8.5 -14.5 800312 800366 15.5 800303 800369 -2.5 -12.5 See Note* 800371 23.5 800395 High Altitude...

  • Page 99: Troubleshooting And Service Chart

    CFC & REFRIGERATION BASICS Trouble Shooting and Service Chart COMPLAINT POSSIBLE CAUSE REPAIR Line disconnect switch open. Close start or disconnect switch. Compressor will not Fuse removed or blown. Replace fuse. start - no hum Overload protector tripped. Refer to electrical section. Control stuck in open position.
  • Page 100 CFC & REFRIGERATION BASICS Trouble Shooting and Service Chart ... Continued COMPLAINT POSSIBLE CAUSE REPAIR Unit operates long or Shortage of refrigerant. Fix leak, add charge. continuously Control contacts stuck or frozen closed. Clean contacts or replace control. Refrigerated or air conditioned space has Determine fault and correct.

  • Page 101: Capillary Tube Replacement Instructions - Upright Gdm/T-Series Equipment

    CAPILLARY TUBE REPLACEMENT INSTRUCTIONS Upright GDM/T-Series Equipment TOOLS REQUIRED Drill Accumulator Hole Saw _” Copper Coupling Evaporator Coil Two _” 90° Copper Elbow Torch Heat Shield Tube Cutter Foam Insulation Cap Tube Suction Line Assembly (Supplied) Liquid Line Filter Drier (Supplied) Cover (Supplied) Wire Back Guards (GDM/T-23 Freezer...

  • Page 102: Capillary Tube Replacement Instructions - Upright Gdm/T-Series Equipment

    CAPILLARY TUBE REPLACEMENT INSTRUCTIONS Upright GDM/T-Series Equipment Continued.._________ STEP 4 __________ ________ STEP 12__________ ________ STEP 21__________ Remove all of the shelves. Place the cap tube suction line assem- Pull a vacuum on the unit. bly in the cabinet. _________ STEP 5 __________ ________ STEP 13__________ NOTE:...

  • Page 103: Refrigeration Trouble Shooting Chart - Refrigerator

    REFRIGERATION TROUBLESHOOTING CHART Refrigerator REFRIGERATION TROUBLESHOOTING CHART (REFRIGERATOR) PROBLEM Cabinet is running warm. 1. Are lights and evaporator fan working? NO Check to make sure cabinet is plugged in, check to make sure circuit breaker is not tripped, check to see if temperature control is set on #5.

  • Page 104: Refrigeration Trouble Shooting Chart - Refrigerator

    REFRIGERATION TROUBLESHOOTING CHART Refrigerator ...continued If the pre s s u res rose and the cabinet began to function corre c t l y, the cabinet was low on charge. T h i s means that there is a leak in the refrigeration system that must be located. A technician can raise system p re s s u re up to 200 psi with nitrogen to aid in the leak search.

  • Page 105: Refrigeration Trouble Shooting Chart - Freezer

    REFRIGERATION TROUBLESHOOTING CHART Freezer REFRIGERATION TROUBLESHOOTING CHART (FREEZER) PROBLEM Cabinet is running warm. Can you hear the compressor running? N O If nothing is running and cabinet is warm check to make sure cabinet is plugged in and then check circuit breaker.

  • Page 106: Refrigeration Trouble Shooting Chart - Freezer

    REFRIGERATION TROUBLESHOOTING CHART Freezer ...Continued 1. If compressor is running and you have a low amp draw with a high suction pressure and a low head pressure your compressor has bad valves replace compre s s o r. 2. If you have a low suction pressure and a low head pressure you may have one of a few different things happening with your system.

  • Page 107: Capillary Tube Replacement Instructions - Refrigerators And Freezers

    After re-piping cover the assembly up with a corner cover that can be ordered from True’s parts department. Remember that P.O.E. oil is now being used and it is very hygroscopic. You should only have the system open for no more than 15 minutes and then replace drier and pull a 200-micron vacuum through both sides of the system.

  • Page 108: Field Troubleshooting

    FIELD TROUBLESHOOTING IF THE COMPRESSOR WILL NOT common terminal and the compressor Make sure capacitors are discharged shell. If there is a ground, replace the before checking. Check for continuity compressor. 1. If there is no voltage at the compressor between each capacitor terminal and 5.
  • Page 109 This will be defrost control in the evaporator true only if liquid refrigerant is in the line compartment in the top of the freez- at the restricted point, since any temper- er.

  • Page 110: Field Troubleshooting

    FIELD TROUBLESHOOTING 5. Cabinet Temperature Control FREEZER PERIMETER HEATER WIRE Drill out the pop rivet that was hidden A. Remove the two screws on the right REPLACEMENT by the stainless steel trim in the lower side of the evaporator housing that right corner of the vertical plastic holds the control mounting plate.

  • Page 111: Troubleshooting Fluorescent Lighting Circuits

    There are different types of lighting systems being used in True cabinets, so there will be different types of troubleshooting techniques that need to be used. The one common aspect in all of the lighting circuits is that the bulbs being used must be the same as the bulbs that were originally installed in the cabinet.

  • Page 112: Gdm & T Series Coolers Idlconnector

    GDM & T SERIES COOLERS IDL CONNECTOR Black Black Lamp Interior 2 Door IDL Cooler Wiring White White and Y cord on 3 door cabinet Black Green White Blue #1 on R.S. or 24K ballast Yellow #1 on R.S. or Red on 24K ballast Blue #2 on R.S.
  • Page 113 Notes...

  • Page 114: Equipment Care And Cleaning

    EQUIPMENT CARE AND CLEANING...

  • Page 115: Cleaning Your Cabinet

    Cleaning Your Cabinet Cleaning Exterior, Vinyl Clad, Galvanized, and Aluminum interior of cabinet: True recommends the use of soap and warm water to clean these parts of the cabinet. Warning: Use of abrasive or chlorine based cleaners will damage your cabinet.

  • Page 116: Stainless Steel Equipment Care And Cleaning (Nafem)

    STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM - North American Association of Food Equipment Manufacturers STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM North American Association of Food Equipment Manufacturers...

  • Page 117: Stainless Steel Equipment Care And Cleaning

    STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM - North American Association of Food Equipment Manufacturers So, what does all this mean? your present cleaner contains chlorides, ask if they have an alternative. They probably will. Also, avoid cleaners containing quaternary salts At this very moment you're gritting your teeth and as they also can attack stainless steel and cause saying,...
  • Page 118 STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM - North American Association of Food Equipment Manufacturers 6. Rinse, Rinse, Rinse 7. Never use hydrochloric acid (muriatic acid) If chlorinated cleaners are used you must rinse, on stainless steel rinse, rinse and wipe dry immediately. The sooner you wipe off standing 8.
  • Page 119 STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM - North American Association of Food Equipment Manufacturers What does Corroded Stainless Contrary to popular belief, Steel Look Like? Stainless Steels ARE susceptible to rusting Passive Film Breakdown Corrosion on metals is everywhere. We recognize If the passive film of your stainless steel has been it quickly on iron and steel as unsightly yellow / broken, your equipment will begin the long walk...
  • Page 120 STAINLESS STEEL EQUIPMENT CARE AND CLEANING NAFEM - North American Association of Food Equipment Manufacturers Enemies of Stainless Steel Review 1. Stainless steels do rust when: Passivity (film- There are three basic things which can break down shield) breaks down by scrapes or scratches by your stainless steels passivity layer and allow cor- deposits and chlorides.
  • Page 121 Notes...

This manual is also suitable for:

Gdt series

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