GSI Group - Laser Division
JK300HP/JK300P/JK125P
Pre-installation and User Manual
Issue 2.0
Page 86 of 172
Part No: 1EA300E01
3.
Re-programming Cooler Module.
4.
Faulty Cooler Module
7.5.2 Alarm 3n02 : No Pump On Response
Meaning:
The cooler module failed to report the pump contactor engaged during the laser sequence
start up routine. The interlock module timed out before the response was received.
Possible causes:
1.
Pump contactor failure.
2.
Loose pump contactor connections.
3.
Loose laser control network connections.
7.5.3 Alarm 3n03: Low Coolant Level
Meaning:
The coolant level in laser has fallen below the level of the detector.
Possible causes:
1.
Coolant level is low.
2.
Loose connections between detector and Cooler Module.
3.
Faulty level detector.
4.
Faulty Cooler Module.
7.5.4 Alarm 3n04: Over Temperature Switch
Meaning:
The temperature switch on the heat exchanger registered an over temperature fault.
Coolant is over temperature.
Possible causes:
1.
Factory supply cooling water turned off.
2.
Insufficient flow from factory cooling water supply.
3.
Incorrect cooler valve setting.
4.
Faulty temperature switch.
5. Loose
connections.
6.
Faulty Cooler Module.
7.5.5 Alarm 3n05: Cooler Module Relay Fault
Meaning:
The Cooler Module did not detect the pump relay engage when the pump was instructed to
turn on, or the Cooler Module detected the pump relay disengaged while the cooler was
running.
Possible causes:
1. Loose
connections.
2.
Faulty pump Relay.
3.
Faulty cooler module.
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 86
