Advantage Engineering Maximum Instruction Manual page 21

MK Series Portable Chiller : Air-Cooled : HE INSTRUMENT
2.
C. PROCESS FLOW ADJUSTMENTS
1.
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 the START key is pressed, the operator
must identify the cause as outlined in the
troubleshooting and repair section.
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.
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 proper lockout
procedures before proceeding.
b. Once the electrical power supply is disengaged,
reverse any two power leads of the power cord at
the disconnect terminals.
c. Note: reversing any two power leads of the power
cord will correctly phase the power supply to the
unit. The operator must reverse the power leads
at the disconnect switch only and not at the
power entry terminals on the unit's electrical
panel. The unit's internal electrical system wiring is
phased correctly at the factory and must not be
altered in the field.
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.
b. Maximum chiller efficiency is obtained at
approximately 2.4 gpm per ton of rated capacity.
Low liquid flow can reduce efficiency and in some
cases allow ice to develop in the evaporator which
can damage the evaporator. Excessive liquid flow
will trip the motor overload protection circuit.
ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729
Service Department Fax: 317-885-8683
Email: service@AdvantageEngineering.com
Fax: 317-881-1277
Page: 21