York YK Service Instructions Manual
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York YK Service Instructions Manual

Centrifugal liquid chillers
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VARIABLE SPEED
OIL PUMP DRIVE
SERVICE INSTRUCTIONS
Supersedes: Nothing
Form 160.52-M2 (899)
MODEL YK (MODEL D & E)
CENTRIFUGAL LIQUID CHILLERS
00130VIP

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  • Page 1 VARIABLE SPEED OIL PUMP DRIVE SERVICE INSTRUCTIONS Supersedes: Nothing Form 160.52-M2 (899) MODEL YK (MODEL D & E) CENTRIFUGAL LIQUID CHILLERS 00130VIP...

  • Page 2: Table Of Contents

    PRESSURE SETPOINT NOT ACHIEVED has replaced the message for HIGH OIL FLOW .. 19 Diagnostic Software ........................19 VSOP Drive Okay Relay ......................19 Auto Re-settable Shutdowns ...................... 19 Non Auto Re-settable Shutdowns ....................19 TROUBLESHOOTING ......................20 YORK INTERNATIONAL...

  • Page 3: Vsd Oil Pump General Information

    On this chip is a label. If the label has C13.XX on it, or The VSOP Drive has been added to Model “D” YK a lower number, the VSOP drive should be replaced.

  • Page 4: Variable Speed Oil Pump Drive Operation Model D Chiller

    One of the scrolled messages is Control Board) to the VSOP drive’s “PWM” input that OIL PUMP VSD=XXX HZ;PRS=XX.XPSID ramps the VSOP drive output frequency from 25Hz to whatever frequency is required (up to a maximum of YORK INTERNATIONAL...
  • Page 5 OIL PUMP VSD SPEED CONTROL J2-3 REFRIGERANT LEVEL OPEN J1-2 +12 VDC J3-2 J5-1 OIL PUMP DRIVE - AUTOSTART LINE 3R-1 POWER SUPPLY BOARD DRIVE OKAY RELAY OPEN ON FAULT OIL PUMP VARIABLE SPEED DRIVE DIGITAL INPUT BOARD LD04375 FIG. 1 YORK INTERNATIONAL...

  • Page 6: Automatic Speed Control

    VSOP drive control must be enabled or disabled, as appropriate, and the associated setpoints programmed plier value also determines the magnitude of output fre- quency correction when the error between the actual using the “Programming” procedure on page 8. YORK INTERNATIONAL...
  • Page 7 +12 VDC "OFF TIME" 0VDC "ON TIME" OUTPUT FREQUENCY IN HZ = (ON TIME IN SECONDS / 0.02) + 25 SMALLEST INCREMENT OF CHANGE = 0.010 SEC; 0.5 Hz LD04377 FIG. 2- PULSE WIDTH MODULATION (PWM) SPEED CONTROL SIGNAL YORK INTERNATIONAL...

  • Page 8: Manual Speed Control

    4. Press ENTER key. 2. Using Access Code 1 3 8 0, enter Program Mode. 5. Press ADVANCE DAY/SCROLL key. PROGRAM MODE SELECT SETPOINT ENABLE STANDBY LUBE = 0 (0=NO;1=YES) is displayed. is displayed. 3. Press OPTIONS key. YORK INTERNATIONAL...

  • Page 9: Micro Board Changes

    These standby lubrication cycles are enabled or disabled by the Service Technician using the VSOP drive selec- tion procedure described above. It is recommended that the standby lubrication be enabled on chillers that re- main shut down for periods of 24 hours or greater. YORK INTERNATIONAL...

  • Page 10: Safety Shutdowns

    160.49-M2, Section 5. If the power failure is less than 2 minutes in duration, a If VSOP drive operation is not selected, these mes- standard 2.5 minute “SYSTEM COASTDOWN” op- sages are replaced by: OUTPUT--HI SPEED THRUST SOL--1, 9 MORE YORK INTERNATIONAL...

  • Page 11: Fault Indications From The Vsop Drive

    There may be noise on the input line, or the line volt- initiate a Cycling Shutdown. The following message will age may not be correct. appear on the display when the STATUS key is pressed Possible Solutions: on the Microcomputer Control Center. Verify the input voltage. YORK INTERNATIONAL...

  • Page 12: Non-Auto-Resettable Shutdowns

    Connect the motor across the line voltage using an overload protector. This may also free up the oil pump. Clean the oil. The VSOP drive will restart when input power is re- moved for 30 seconds and reapplied. YORK INTERNATIONAL...

  • Page 13: Troubleshooting Guide

    3. (a) If VSOP drive starts, verify relay output board and connect to wiring to relay output board and wire #1. micro board. 3. (b) If VSOP drive does start, replace 3R. If VSOP drive still does not start, replace VSOP drive. YORK INTERNATIONAL...

  • Page 14: Drive Replacement Instructions

    11. Rewire the VSOP drive using Figure 3 on the next right of the VSOP drive. page. 6. Carefully, remove the VSOP drive from the 12. Reapply power to the chiller at the main power heatsink. Do not nick or scratch the heatsink. disconnect. YORK INTERNATIONAL...
  • Page 15 FORM 160.52-M2 - OR - LD04378 FIG. 3 – SYSTEM WIRING DIAGRAM YORK INTERNATIONAL...

  • Page 16: Most Frequently Asked Questions

    The SSS reduces the amplitude of the voltage ap- quency, or 60 Hz, is what is left. The hand-held plied to the motor during start-up, by gradually turn- meter will detect the carrier frequency, but not the fundamental frequency. YORK INTERNATIONAL...

  • Page 17: Remote Keypad Unit

    WAEXRK01. (Yes this nected to a VSOP drive, the Remote Keypad Unit pro- is a real YORK part number and the last two digits are vides the ability to view the different controls within the zero, one.) Operation of the RKU is covered in Form...

  • Page 18: Vsd Oil Pump General Information

    The VSD oil pump (VSOP) drive used in the Mod. “E” tion of the VSOP drive as it pertains to the Graphic YK chiller is the same as the VSOP drive used in the Control Center. Mod. “D” YK chiller, described on pages 3 thru 17.

  • Page 19: Safety Shutdowns

    Refer to the Troubleshooting Guide on pages 13 and 14 checks are not performed during MANUAL SPEED for detailed information about fault messages and control whether the chiller is running or not. troubleshooting of the VSOP drive on a Mod. “D” YK chiller. DIAGNOSTIC SOFTWARE NON AUTO RESETTABLE SHUTDOWNS...

  • Page 20: Troubleshooting

    Graphic Control Center. wiring from EN on the VSOP drive Measure voltage between terminal to the J20-3 on the Micro Board. EN on the VSOP drive and ground. 2. (b) If 0 VDC is measured, replace VSOP drive. YORK INTERNATIONAL...
  • Page 21 1. Refer to the second paragraph autostart every day at the same time. under Known Problems on Page 3. The oil pump motor rotation 1. Reverse two of the wires on is reverse. M1-M3 of the VSOP drive. YORK INTERNATIONAL...
  • Page 22 BOARD OIL VARIABLE SPEED PUMP - DRIVE CONTACTS OPEN LINE DRIVE OKAY RELAY SPEED COMMAND OPEN ON FAULT +12VDC MICRO START / STOP PUMP BOARD LD04718 FIG. 4 – OIL PUMP VSD – INTERFACE YORK INTERNATIONAL...
  • Page 23 FORM 160.52-M2 YORK INTERNATIONAL...
  • Page 24 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA Copyright © by York International Corporation 1999 ALL RIGHTS RESERVED Form 160.52-M2 (899) Supersedes: Nothing...

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