11. Electronics Unit
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Image 11-26
plugging in 7 cable connectors
8. Use the service tool wizard to push the parameters of the old logic board onto the new logic board.
11.5 Pump inverter replacement
Description
The pump inverter (variable speed drive) controls the pump motor speed by varying the motor input frequency and voltage.
Each chiller has either of the following two possible inverter types installed:
•
J1000
•
V1000
The correct type of inverter is visible on the cover of the inverter itself.
Overview
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Removing the J1000 pump inverter
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Installing the J1000 pump inverter
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Removing the V1000 pump inverter
•
Installing the V1000 pump inverter
11.5.1 Removing the J1000 pump inverter
Necessary tools
•
Phillips screwdriver PH1
•
Allen wrench 3 mm
This procedure assumes that power has been switched off. Unless otherwise stated, power must be off prior
to start with this procedure. To switch off power, see procedure "Switching off power and locking the switch",
page 15.
How to remove the pump inverter?
1. Remove the front cover. See procedure "Removing a cover", page 17.
2. After switching off power, wait for at least 1 minute to allow the inverter capacitor to discharge.
3. Unplug the cable connector at the front cover of the pump inverter.
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Summary of Contents for ULC-30A
Page 1: ...ULC 30A Service manual R5906015 01 01 02 2018...
Page 4: ......
Page 6: ...Table of contents Index 97 2 R5906015 ULC 30A 01 02 2018...
Page 10: ...1 Safety 6 R5906015 ULC 30A 01 02 2018...
Page 24: ...5 Covers 20 R5906015 ULC 30A 01 02 2018...
Page 28: ...6 Fan unit 24 R5906015 ULC 30A 01 02 2018...
Page 40: ...7 Coolant procedures 36 R5906015 ULC 30A 01 02 2018...
Page 70: ...10 Refrigeration unit 66 R5906015 ULC 30A 01 02 2018...
Page 92: ...11 Electronics Unit 88 R5906015 ULC 30A 01 02 2018...