BG-N4 Glycol Chiller
Page: 24
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: service@AdvantageEngineering.com
b.
Remove all necessary cover panels to access the pump motor.
c.
Locate the pump’s electric motor. The operator must identify the motor
shaft inside the electric motor housing. The motor shaft can be seen
through the vent slots in the motor housing or by removing the shaft
cover.
d.
Toggle the pump to quickly cycle the pump motor “on” and then “off”.
e.
Observe the motor shaft. When swithed on the motor shaft will rotate.
When switched off, the shaft will slowly “coast” to a stop. As the shaft
slows, the operator can identify the rotation of the motor shaft. Correct
rotation (correct phase) is “clockwise”, when viewed from the rear of the
motor. Incorrect rotation is “counter-clockwise” (incorrect phase) when
viewed from the rear of the motor. If the
shaft does not rotate when switched
on, the operator must identify the cause
as outlined in the troubleshooting and
repair section of this manual.
f.
If the motor shaft is phased correctly
(shaft turns in a clockwise direction),
continue with step C. If the motor shaft
is NOT phased correctly (shaft turns in a
counter-clockwise direction), correct as
outlined in step 2.
2.
If the unit is phased incorrectly, the operator must:
a.
Disengage the electrical power supply to the unit at the unit’s disconnect
switch. Follow all facility proper lock-out tag-out procedures before
proceeding.
b.
Once the electrical power supply is disengaged the operator can change
rotation by switching any two power conductors at the terminal block or
the customer supplied main power disconnect.
C.
PROCESS FLOW ADJUSTMENTS
1.
The operator must determine and set proper water flow rate for the most efficient
and trouble free operation.
a.
Water flow rate through the process is determined by the pressure losses
in the process loop. Generally, higher flow rates result in turbulent flow
achieving maximum temperature control and lower maintenance. Since
the evaporator in most liquid chillers is flow sensitive, the efficiency of
operation is directly related to the flow of liquid.
Correct shaft rotation is clockwise.
WARNING: The electrical power is engaged at this point and caution must be observed while the electrical
supply is engaged and cabinet panels are removed and opened.
Summary of Contents for BG-N4 Series
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