Advantage Temperature Control Unit SK-3420-G

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 thermoformed panel attached to the stainless steel cabinet by 4 small screws.

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.

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 Service

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

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

Ensure all necessary equipment is available

Disengage process operations according to the procedure outlined in the unit manual. Ensure all system pressure is relieved and unit pressure gauges read '0'.

Remove the 'to process' temperature probe and insert a 1/2" plug in its place.

Prepare an ice bath and place a digital thermometer in it. Insert the probe in the ice bath.

Restart the instrument according to the procedures outlined in the unit manual.

Inspect heater contactor for signs of wear or pitting

Is the heater contactor in good condition?

Inspect pump motor starter for signs of wear or pitting

Is the pump motor starter in good condition?

Replacement and Safety Measures

Replace any worn or pitted contactors or motor starters

Ensure all safety protocols are followed during replacement

Call the factory for diagnostic assistance

Was a control instrument determined to be at fault?

Send a new or reconditioned instrument as a replacement

Return the defective instrument freight pre-paid for full credit

Was the defective instrument returned?

Pay for the instrument if not returned

Out of Warranty Service Incident

Call the factory for diagnostic assistance