AEC Glacier Series Air and Water Cooler Portable Chillers - Manual (Page 46)

Glacier Series Portable Chillers Page 45
5 Startup Checklists
5-1 Introduction
Follow the check lists below for the start-up of your new chiller. These lists assume the
installation information elsewhere in this manual has been read and followed. New chillers
should be started up and checked by a qualified refrigeration service technician.
5-2 Water-Cooled Glacier Chiller 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 used. The voltage at the main power connection must be within +/-10% of
the voltage on the serial tag. Electrical connections must conform to all applicable codes.
; The chilled water To-Process and From-Process connections should be completed.
; 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 desired leaving water temperature.
; The tower or city condenser-cooling WATER IN and WATER OUT connections should be
completed and an adequate supply of condenser water must be available.
; Connect the main power to the unit and bump-start it to check for proper rotation direction.
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 Start-Up, Section 5-2.
5-3 Starting Up Water-Cooled Glacier Chillers
1. Turn ON the chiller and put it under a process load.
2. Set the NX control to the process temperature you want by pressing the Up or Down
arrow buttons behind the access door on the NX control.
3. Adjust the freezestat cutout dial, located in the electrical enclosure, to 10°F below the
process temperature you want.
4. Check the pump amp draw and pump pressure. The amp draw reading must be within the
running load and service factor amps.