AEC NEC Central Station Air and Water Cooled Chiller - Manual (Page 38)

NEC Series Water- and Air-Cooled Central Chillers Page 37
5 Startup Checklists
5-1 Introduction
Important!
These lists assume that you have read and followed
the installation information in this manual.
A qualified refrigeration service technician should
start up and check new chillers.
AEC, Inc. offers factory startup services for NEC Series chillers.
Call the AEC/Application Engineering Service Department
at 1/800/233-4819 for more information.
5-2 Water-Cooled NECW Chiller Startup Checklist
; Check the shipping papers against the serial tag to make sure that chiller size, type, and
voltage are correct for the process.
; Check the transformer primary voltage connections make sure that they are configured for
the electrical power you are using.
; Make sure that the voltage at the main power connection is within plus or minus ten percent
(
±10%) of the voltage listed on the serial tag.
; Make sure that phase imbalance is less than two percent (2%).
; Make sure that all electrical connections are tight and conform to all applicable codes.
; Complete the chilled water
TO and FROM PROCESS connections.
; Make sure that the optional or field-installed chilled water supply and return valves on the
chiller are open.
; Make sure that you fill the auxiliary pump tank and chilled water circuits with a proper
water/ glycol mixture that provides freeze protection to 20°F below the leaving water
temperature you want.
; Complete tower or city condenser
WATER IN and WATER OUT connections. Provide an
adequate condenser water supply.
; Connect the main power and bump-start the process, checking for proper rotation direction of
accessory pumps. To change direction, reverse any two main power leads at the incoming
terminal block.
; Make sure that the crankcase heater is
ON for at least 24 hours before startup to force
dissolved refrigerant gas from compressor oil.
; Check your work and proceed to Section 6-3 on Page XX.