Advantage Temperature Control Unit SK-1045-G

Ensure all necessary equipment is available

Disengage process operations according to the unit manual

Remove the 'to process' temperature probe and insert a 1/2" plug

Prepare an ice bath and place a digital thermometer in it

Place the probe in the ice bath

Shut down unit operations according to section 3.4 in this manual

Ensure proper lock-out procedures are followed

Ensure system pressure is eliminated and the unit's pressure gauges read '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

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 AVT valve's drip cover.

Motor Driver/Gearbox Components Servicing

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

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

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

Is there any visible wear or pitting on the heater contactor contacts?

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

Is there any visible wear or pitting on the pump motor starter contacts?

Replace the heater contactor if wear or pitting is observed.

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

Unplug the sensor probe connection and shake out water

Did the error display change to Solid Red?

Press the Start push button to clear the error display

Cease process operations as outlined 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

Disconnect the sensor probe service plug