Thermo King V-520 Series Operator's Manual
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Thermo King V-520 Series Operator's Manual

Units with direct smart reefer single and multi-temperature systems
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Operator's Manual
V-520 Series Units with Direct Smart Reefer
Single and Multi-Temperature Systems
Revision A
T T K K 5 5 5 5 0 0 3 3 2 2 - - 1 1 8 8 - - O O P P - - E E N N
February 2021

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  • Page 1 Operator’s Manual V-520 Series Units with Direct Smart Reefer Single and Multi-Temperature Systems Revision A T T K K 5 5 5 5 0 0 3 3 2 2 - - 1 1 8 8 - - O O P P - - E E N N...
  • Page 2 If more information is required, consult your Thermo King Service Directory for the location and telephone number of the local dealer. T T h h e e r r m m o o K K i i n n g g ’ ’ s s w w a a r r r r a a n n t t y y s s h h a a l l l l n n o o t t a a p p p p l l y y t t o o a a n n y y e e q q u u i i p p m m e e n n t t w w h h i i c c h h h h a a s s b b e e e e n n “...
  • Page 3 I I n n t t r r o o d d u u c c t t i i o o n n Software License The product includes software that is licensed under a non-exclusive, non- sublicensable, terminable and limited license to use the software as installed on the product for its intended purpose.

  • Page 4: Table Of Contents

    Table of Contents S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s ..................7 7 Danger, Warning, Caution, and Notice .
  • Page 5 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Vehicle Engine Operation ....... 22 Standby Operation (Models 20 and 50 Only).
  • Page 6 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Refrigerant ..........38 M M a a i i n n t t e e n n a a n n c c e e I I n n s s p p e e c c t t i i o o n n S S c c h h e e d d u u l l e e .

  • Page 7: Danger, Warning, Caution, And Notice

    Safety Precautions Danger, Warning, Caution, and Notice Thermo King® recommends that all service be performed by a Thermo King dealer and to be aware of several general safety practices. Safety advisories appear throughout this manual as required (refer to examples below). Your personal safety and the proper operation of this unit depend upon the strict observance of these precautions.

  • Page 8: Auto Start/Stop

    E E q q u u i i p p m m e e n n t t D D a a m m a a g g e e ! ! Do not connect other manufacturer’s equipment or accessories to the unit unless approved by Thermo King. Failure to do so can result in severe damage to equipment and void the warranty.

  • Page 9: Refrigerant Oil Hazards

    S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s D D A A N N G G E E R R H H a a z z a a r r d d o o u u s s G G a a s s e e s s ! ! Refrigerant in the presence of an open flame, spark, or electrical short produces toxic gases that are severe respiratory irritants which can cause...
  • Page 10 S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s bulky dressing to protect from infection. Get prompt medical attention. Wash contaminated clothing before reuse.

  • Page 11: Safety Decals

    S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s safety glasses, and avoid looking at wires being cut. The ensuing flash can cause burns and blindness.

  • Page 12: Electric Standby Nameplates

    S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s Figure 2. Automatic Start Caution Electric Standby Nameplates (Models 20 and 50 Only) Figure 3.
  • Page 13 S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s Figure 4. Belt Caution TK 55032-18-OP-EN...

  • Page 14: Introduction

    Unit Description Introduction Thermo King V-520 refrigeration systems are designed for medium-sized trucks and vans transporting fresh, frozen, and deep frozen goods. The condenser for a RT (roof top) unit is located on the roof top of the vehicle. The condenser on a NM (nose mount) unit is located on the front nose of the cargo box.

  • Page 15: Standard Unit Features

    U U n n i i t t D D e e s s c c r r i i p p t t i i o o n n Standard Unit Features • C C o o n n d d e e n n s s e e r r - Lightweight design of aluminium construction, easy to service with automotive grade polypropylene cover.

  • Page 16: Evaporator

    U U n n i i t t D D e e s s c c r r i i p p t t i i o o n n Refrigeration Module Condenser Module Figure 6. V-520 RT Models 20 and 50 Shown RCS1708 Refrigeration Module Standby Module...

  • Page 17: In-Cab Controller

    U U n n i i t t D D e e s s c c r r i i p p t t i i o o n n Figure 8. Evaporator In-Cab Controller W W A A R R N N I I N N G G R R i i s s k k o o f f I I n n j j u u r r y y ! ! Never operate the unit unless you completely understand the controls;...

  • Page 18: Standby Operation (Models 20 And 50 Only)

    U U n n i i t t D D e e s s c c r r i i p p t t i i o o n n Standby Operation (Models 20 and 50 Only) W W A A R R N N I I N N G G H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! ! A certified electrician should verify that the proper standby power requirements are being supplied before connecting to a new power source.
  • Page 19 O O t t h h e e r r S S y y s s t t e e m m s s F F u u s s e e s s – These fuses are located outside of the controller and should only be serviced by a authorized Thermo King Dealer.

  • Page 20: Introduction

    Operating Instructions Introduction In vehicle powered units, temperature control is based on two values: The setting (Setpoint) of the controller and the evaporator return air temperature. The difference between these two temperatures will determine the mode of operation: cool, heat, or null. C C o o o o l l : : When the temperature in the compartment is 3°F (2°C) h h i i g g h h e e r r than the setpoint, the unit runs in cool mode to reduce the evaporator return temperature to achieve the setpoint.

  • Page 21: Unit Controls

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Unit Controls W W A A R R N N I I N N G G R R i i s s k k o o f f I I n n j j u u r r y y ! !

  • Page 22: Operating The Unit

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Cool Symbol The unit is cooling (Thermometer with an arrow pointing downward).

  • Page 23: Entering The Setpoint Temperature

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s 3.

  • Page 24: Multi-Temperature Units

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Multi-Temperature Units 1.
  • Page 25 O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Compartment Selection 1.
  • Page 26 O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s C C 2 2 : Compartment 2 is active while Compartment 1 is disabled.

  • Page 27: Initiating Manual Defrost Cycle

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s I I m m p p o o r r t t a a n n t t : : If the Select key or the Enter key is not pressed within 20 seconds to select the new Setpoint Temperature, the unit will continue to run at the original Setpoint Temperature.

  • Page 28: Alarms

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Figure 16.

  • Page 29: Clearing Alarm Codes

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Figure 18.

  • Page 30: Buzzers (Optional)

    (the unit continues running in standby mode). It can also sound if the door(s) is open or the return air temperature is out of range. Buzzers are configurable to different parameters to suit individual customer needs. Contact your Thermo King Dealer for assistance. TK 55032-18-OP-EN...

  • Page 31: Alarm Code Descriptions

    King Dealer. High Pressure Sensor Failure - The high pressure sensor has become faulty or disconnected. Contact your Thermo King Dealer. dr1, dr2 Cargo Doors Are Open (Units with door switch option only) - Check if the Doors are open. if not, then the door switches are faulty, or improper door switch configuration.

  • Page 32: Viewing Information Displays

    O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s Alarm Description Communications Failure Contact your Thermo King Dealer. SCM communication lost - Communication lost to Smart Charger Module. If the problem persists when the unit is restarted, contact your Thermo King Dealer.
  • Page 33 Pretrip Inspection (Before Loading Refrigerated Cargo) Pretrip inspections are an important part of preventative maintenance designed to minimize on-the-road operating problems. Perform this visual pretrip inspection before loading refrigerated cargo. N N o o t t e e : : Pretrip inspections are not intended to take the place of regular maintenance inspections.

  • Page 34: Unit Operation (Before Loading Refrigerated Cargo)

    Loading Procedure I I m m p p o o r r t t a a n n t t : : Product should be pre-cooled before loading. Thermo King units are designed to maintain the load at the temperature at which it is loaded.

  • Page 35: Enroute Inspections

    U U n n i i t t O O p p e e r r a a t t i i o o n n a a n n d d L L o o a a d d i i n n g g P P r r o o c c e e d d u u r r e e s s 3.

  • Page 36: Inspection Troubleshooting

    30 minute inspections, especially if the compartment temperature appears to be moving away from the setpoint. 3. Immediately contact the nearest Thermo King Dealer. 4. Take the necessary steps to protect and maintain proper load temperature.
  • Page 37 Qualified and Certified personnel should attempt to service your Thermo King unit. The unit did not start Contact nearest Thermo King dealer, or call automatically. the Thermo King Cold Line for referral. Air leaks in cargo box. Inspect cargo box for air leaks such as doors that are not fully closed or bad/ missing door seals.

  • Page 38: Fuses

    I I m m p p o o r r t t a a n n t t : : Failure to use properly sized power cord may result in improper unit operation, or unit failure. Refrigerant All refrigeration service requirements, major and minor, should be handled by a Thermo King dealer. TK 55032-18-OP-EN...
  • Page 39 Maintenance Inspection Schedule A closely followed maintenance program will help to keep your Thermo King unit in top operating condition. The following general schedule is provided to assist in monitoring that maintenance. N N o o t t e e : : All service requirements, major and minor, should be handled by a Thermo King dealer.
  • Page 40 M M a a i i n n t t e e n n a a n n c c e e I I n n s s p p e e c c t t i i o o n n S S c c h h e e d d u u l l e e Inspect/Check/Service These Items •...
  • Page 41 Warranty Terms of the Thermo King North American Vehicle Powered Truck Unit Limited Warranty are available on request from your Thermo King Dealer. Please reference document TK 51350. Proposition 65 TK 55032-18-OP-EN...
  • Page 42 Serial Number Locations 1. C C O O N N D D E E N N S S E E R R : : Nameplate located on the front inside edge of condenser frame (Cover needs to be removed). 2. S S T T A A N N D D B B Y Y C C O O M M P P R R E E S S S S O O R R : : 20 and 50 Models only. Nameplate located on standby compressor body.
  • Page 43 Thermo King Dealer anywhere in the United States by going to thermoking. com or by using the Thermo King North American Service Directory (available from any Thermo King dealer). If you are unable to reach a dealer, then call the Toll Free Emergency Cold Line Number (888) 887-2202. The answering service will assist you in reaching a dealer to get the help you need.
  • Page 44 1938. For more information, visit www. thermoking.com or www.tranetechnologies.com. Thermo King has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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