6.2 FIRST TIME START-UP
During the commissioning period there should be
sufficient heat load to run the unit under stable
full load operation to enable the unit controls,
and system operation to be set up correctly, and a
commissioning log taken. Be sure that the control
center operatin instructions on section 5 have
been fully understand and the System Start-up
Checklist is completed, Finished the following
operations step by step.
Start-up
Press the“ ”Key on the keypad and there may be a few
seconds delay before the ompressor starts because of the
anti-recycle timer. Be ready to push the Emergency
Switch immediately if any unusual noises or other
adverse conditions appeared during the compressor
starting. Refer to instructions on the operation of control
System on section 5 for the normal operation process.
Oil Pressure
When a compressor starts, inspect the running
information from the Display Panel, and verify that oil
differential pressure (oil pressure-suction pressure)
develops immediately. If oil pressure does not develop,
the automatic controls will shut down the compressor
(Refer to the oil pressure automatic control process on
the operation of control System on section 5). Under no
circumstances should a restart attempt be made on a
compressor, which can’ t develop oil pressure
immediately.
WARNING
YEWS-E Water Cooling Screw Chiller/Heat Pump
51
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