Dunham-Bush ACDX, Installation, Operation And Maintenance Instructions, Page: 43 / 44

START-UP CHECK LIST Date
YES NO
Unit Model No.
Setting Unit: a. Vibration isolator used
b. Spring isolator adjusted for equal height
c. If rubber-in-shear isolators are used, is unit leveled by
shimming
Wiring: a. Power wiring complete
b. Control wiring complete
c. Separate chiller heater wiring complete
d. Electric service adequate for load
e. Power source voltage correct for motor(s) used
f. Motor circuit has proper size fusetrons
g. System wired per diagram
h. All lead connections tight
i. Wiring complies with local codes
j. Flow switch operation
Piping: a. Piping complies with applicable codes
b. External piping independently supported
c. Chilled water lines insulated
Before Start-Up:
a. Open compressor discharge service valve (if supplied)
b. Open liquid valve(s)
c. Open suction, and discharge valves to pressure gauges
(if supplied)
d. Check rotation of all fan motors
e. Start auxiliary equipment (pumps, fans, etc.)
f. Is crankcase heater operating? Operate 24 hours prior to
unit start-up.
g. Check the compressor oil level through the crankcase sight
glass. The oil level should be 1/2 of the glass. If the level
is low, add oil in accordance with the directions in the
maintenance instructions
h. Check all control settings as specified on unit wiring diagram
i. Air purged from chilled water system
After Start-up: a. Check high pressure control
b. Check oil temperature safety switch
c. Check and adjust low temperature freeze control
d. Check and adjust unit controller
e. Check and adjust low pressure control
f. Check and adjust expansion valve superheat
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