First start-up of the chiller
Page 19
Operating manual LC 340.01-A.3.5/6
Current revision status: Apr 4, 2019
5.9 Electrical connection
The chiller is completely wired and ready for operation. As soon as the laser has been
connected to a three-phase power system and the circuit breaker is switched to ON-
Position, the chiller will start operation when the following conditions are met:
-
Fuse for chiller main power supply OK
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Fuse for chiller control voltage OK
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If activated, enabling of the chiller by the laser OK
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Chiller failure free
DANGER
DANGER:
The electrical connection has to be made by a skilled and authorized
worker according electric drawing.
ADVICE:
The chiller has to be connected with a clockwise rotating field. The
factory warranty is void if the electrical connections to the chiller are not
performed properly.
5.10 Checking the electrical rotating field
The pumps should now be running. As soon as the water temperature exceeds the set
point, the compressor will start.
Please look at the pump motors. You will find an arrow which indicates the proper
direction of rotation. Check, if the direction of the pump rotation is according to the
arrow.
Take a sheet of paper and put it in front of the air outlet grid. If the pump motor rotation
is correct, the paper sheet will flutter in the airflow.
The correct rotation of the compressor is checked by the control board. If the
compressor is rotating in the wrong direction, the control board will switch off the
chiller.
Checking rotation of the pump