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Section Section
Section Section
Section
V Special FeaturesV Special Features
V Special FeaturesV Special Features
V Special Features
Pump MotorPump Motor
Pump MotorPump Motor
Pump Motor
Overload ProtectorOverload Protector
Overload ProtectorOverload Protector
Overload Protector
Refer to the serial number label for the specific electrical requirements of
your unit; specifically, identify the phase requirements of your unit.
Three phase units with three phase pump motors are equipped with a pump
motor overload protector. The overload protector prevents the pump motor
from exposure to excessive current. If an overload fault occurs, due, for
example, to excessive pressure or flow, or excessive ambient temperature,
the overload protector will shut off the pump motor. The overload protector
will automatically reset after approximately one to two minutes.
The overload protector can be adjusted to require manual resetting after an
overload fault. Contact our Service Department for adjustment instructions
(see Preface, After-sale Support).
The pump motor overload protector is located
at the left rear corner (mounted directly under
the fluid reservoir). The fault indicator is visible
through the rear access panel.
The unit’s response to a fault will vary depending on the unit’s configuration.
If the unit has a single phase pump motor, the unit will continue to run if an
overload fault occurs. The pump will restart as soon as the protector resets.
If the unit has a three phase pump motor, the pump and refrigeration system
will both shut down until the protector resets.
If you are unsure of the phase of the pump motor in your unit, contact our
Service Department (see Preface, After-sale Support).
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