Advantage Temperature Controller SRG-690

Shut down unit operations according to section 3.4 in the manual

Ensure proper lock-out procedures are followed

Is the system pressure eliminated and the unit’s pressure gauges reading '0' pressure?

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

Remove the electrical connections to the pressure switch

Inspect the heater contactor for signs of wear or pitting on the contacts.

Is the heater contactor cycling proportionally to the heat input required?

Replace the heater contactor if wear or pitting is observed.

Inspect the pump motor starter for signs of wear or pitting on the contacts.

Replace the pump motor starter if wear or pitting is observed.

Ensure all components are operating within safe temperature limits.

Disengage process operations and relieve all system pressure.

Disengage main power supply and 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.

Remove the three motor wire leads from the motor wiring terminals and map the wire terminal locations.

Did the yellow Alert icon disappear?

Stop process operations as described in section 3.4 of the manual

Ensure all process pressure is relieved and 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

Disengage process operations and verify all system pressure is relieved and the unit’s pressure gauges read '0'.

Disengage main power supply and verify the Power light on the display is 'off'.

Remove the lift-off access panel and set aside.

Disconnect the valve wiring harness.

Remove the AVTTM valve’s drip cover.

Remove the 2 mounting screws securing the motor/gearbox assembly.

Carefully separate the motor/gearbox from the attached coupling from the valve assembly.