Power Soak 36212 PS-275 Owner's Manual - Manual (Page 26)

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The Power Soak PS-275 requires minimal, routine preventative
maintenance. The following procedures should be done to ensure that the
PS-275 remains reliable. If there are any questions regarding the
preventative maintenance procedures, please contact the factory at 800-
444-9624.
Daily
Clean the liquid level sensors that are located on the side
walls of the wash and sanitizer tanks. They are the white
plastic discs with metal centers. Clean the sensor faces
thoroughly. If cleaned regularly, a washcloth and soapy water
are all that is required.
Monthly
Clean the pump motor fan shroud with a damp, soapy
cloth. The motor shroud is the "vented" cover located at
the end of the motor (closest to the control panel). This
will prevent grease and dust from accumulating in the
cover's openings, which can obstruct the airflow that
cools the motor.
Note: The motor bearings are permanently sealed and do
not need to be greased.
As needed
De-lime the wash tank. Simply add a recommended titration of de-liming
agent to a tank of warm, fresh water and run the machine overnight. Ask a
chemical sales representative to recommend a specific de-liming agent.
If the liquid level sensors are not cleaned regularly, the
machine may fail to operate; or it may be possible to
run it without water, which will cause serious damage to
the PS-275. Running the machine without water in the
wash tank will cause damage that is not covered by
warranty.
IMPORTANT: Turn off the power to the PS-275 at the
main breaker prior to performing the following task!