Advantage Temperature Controller SRV-645

Inspect heater contactor for signs of wear or pitting

Is the heater contactor cycling frequently?

Does the heater contactor require replacement due to wear?

Inspect pump motor starter for signs of wear or pitting

Does the pump motor starter require replacement due to wear?

Ensure all components are cool before inspection

Shut down unit operations according to section 3.4 in the manual

Ensure proper lock-out procedures are followed

Confirm system pressure is eliminated and pressure gauges read '0'

Drain unit by removing the pump casing drain plug

Remove the capillary connection from the cooling cylinder to the pressure switch

Remove the brass elbow mounted on the pressure switch

Disconnect the electrical connections to the pressure switch

Disengage process operations and relieve all system pressure

Verify the Power light on the display is 'off'

Remove the lift-off access panel and set aside

Remove the necessary panels to gain access to the pump motor

Drain machine by removing the pump casing drain plug

Disengage operations and ensure all system pressure is relieved

Verify the unit’s pressure gauges read '0'

Verify the Power light on the display is 'off'

Remove the lift-off access panel and set aside

Drain machine by removing the pump casing drain plug

Did the yellow Alert icon disappear?

Stop process operations as described in section 3.4 of the manual

Is all process pressure relieved and the unit’s pressure gauges read '0' pressure?

Drain the unit by removing the pump casing drain plug

Is the unit drained below the sensor probe mount?

Disconnect the sensor probe service plug