AEC Glacier Series Air and Water Cooler Portable Chillers - Manual (Page 47)

Page 46 Glacier Series Portable Chillers
5. Operate the chiller, looking for leaks and listening for unusual noises or vibrations that
could indicate improper operation.
5-4 Air-Cooled Glacier Series Startup Checklist
; Check the shipping papers against the serial tag to be sure chiller size, type and voltage is
correct for the process that will be controlled.
; Check the transformer primary voltage connections to be sure they are configured for the
electrical power you are using. The voltage at the main power connection must read within
plus or minus ten percent (±10%) of the voltage listed on the serial tag. Electrical
connections must conform to all applicable codes.
; Complete chilled water
TO PROCESS and FROM PROCESS connections.
; The chilled water supply valve on the chiller must be open.
; Be sure the reservoir tank and chilled water circuit piping are filled to the full mark with a
water/glycol mixture. The water/glycol mixture should provide for freeze protection to at
least 20°F below the leaving water temperature you want.
; The air cooled condenser should have an adequate supply of air for proper operation.
; Connect the main power to the unit and bump-start it to check for proper rotation direction of
fans and pump. See Section 3-10. The crankcase heater should be ON for at least 24
hours before start-up to force dissolved refrigerant gas from the compressor oil.
; Check your work and proceed to Section 5-5 below.
5-5 Starting Up Air-Cooled Glacier Series Chillers
1. Turn ON the chiller and put it under a process load.
2. Set the NX control to the desired process temperature, using the up or down arrow
buttons behind the door on the NX control.
3. Adjust the Freezestat Cut-Out dial, located in the electrical enclosure, to 10°F below the
desired process temperature.
4. Check the pump amp draw and pump pressure. The amp draw reading must be within the
running load and service factor amps.
5. Operate the chiller, looking for any leaks and listening for unusual noises or vibrations
that could indicate improper operation.