Start-up and operation
Start-up and operation
Start unit and check rotation of fans and compressors.
Scroll compressors will only compress in one rotational direction. Three-phase compressors will
rotate in either direction depending upon phasing of the power. Since there is a 50/50 chance of
connecting power in such a way as to cause rotation in the reverse direction,
it is important to
ensure proper rotation direction is achieved when the system is installed and operated.
Monitor the microprocessor board for any fault codes. This will ensure proper unit operation.
Verification of proper compressor direction is made by observing that suction pressure drops and
discharge pressure rises when the compressor is energized. Reverse compressor rotation also
results in an elevated sound level, as well as substantially reduced current draw.
WARNING
The Air Conditioning section of this equipment is charged with R-410A; a hi-pressure refrigerant.
Only qualified technicians, using appropriately pressure-rated test instruments, should perform
troubleshooting or service on this equipment.
There is no negative impact on durability caused by operating three-phase Scroll compressors in
the reversed direction for a short period of time (under one hour). However, after several minutes
of operation, the compressors internal protector will trip.
If opposite rotation is needed, disconnect and reverse any two leads of the three-phase supply.
Reconnect power.
Note:
Observe unit operation and check for unusual noise or vibration.
Table 13: Pressure switch settings - all models
High
Low
Cut out (PSIG)
625
68
Cut in (PSIG)
500
107
Table 14: Refrigerant charge (lbs)
Unit
Circuit 1
Circuit 2
CSV060B
5.25 (5 lbs 4 oz)
-
CSV096B
5.18 (5 lbs 3 oz)
5.30 (5 lbs 5 oz)
CSV120B
6.12 (6 lbs 2 oz)
6.25 (6 lbs 4 oz)
CSV180B
8.69 (8 lbs 11oz)
9.12 (9 lbs 2 oz)
CSV240B
12.45 (12 lbs 7 oz)
12.45 (12 lbs 7 oz)
CSV300B
17.40 (17lbs 6 oz)
16.80 (16 lbs 13 oz)
C-Series Vertical (CSV) Water-Cooled Self-Contained Units, B Generation, R-410A Installation, Operation, and
Maintenance Manual
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