Sterling 682.88107.00 Preventative Maintenance, Routine Servicing, Draining the Unit for Storage

5-2 Preventative Maintenance

WARNING! Make sure that your maintenance technicians comply with lock-out/tag-out procedures during any servicing or maintenance of this unit and related equipment, per OSHA article ART 1910.147.

Before you begin servicing this unit, disconnect all power to it, let the unit cool down completely, and turn off the water.

Failure to follow these directives can result in serious injury or death!

Routine Servicing

Your hot oil temperature control unit requires little in preventive maintenance and servicing. To keep it in good, reliable working order, make sure you follow the following scheduled preventive maintenance procedures.

Keep surfaces clean and free of any excessive accumulations of dirt, oil, or debris. This is especially true for the pump. It relies on free air circulation for proper cooling.

Check the motor air intake screen for any accumulation of dirt; clean it as needed.

Servicing the Unit Monthly or Every 500 Hours

•Lubricate the pump at the grease fittings with a high-quality lithium grease rated at 400ºF (204ºC) or higher. Use only Dow-Corning #44 or a high temperature grease rated at 400ºF or higher that is compatible with Dow-Corning #44. Do not over-lubricate.

•Adjust the pump drive belt tension. Make sure that the motor pulley is properly aligned with the pump pulley; use a straightedge to check. Tighten motor mounting bolts after realignment.

•Inspect the screen in the Y strainer for accumulations of debris. Clean as needed.

Servicing the Unit Every Three Months

Remove and clean the screen in the Y-strainer. Replace the screen if it is damaged.

Draining the Unit for Storage

You should thoroughly flush and drain the Upright unit if you need to take it out of service for a long time, or if you expect it to become exposed to freezing temperatures. The manufacturer recommends using a flushing fluid or equivalent for flushing your Upright unit; follow unit flushing instructions that comes with the flushing fluid.

Drain plugs are provided at the base of the heater tank, reservoir tank, and on the pump. You should also remove, drain, and reinstall the heat exchanger tube bundle before storage.

Preventative Pump Maintenance

You can extend the life of your pump and reduce the cost per gallon pumped if you perform a few preventive maintenance procedures.

Lubricating the Pump

Using #2 ball bearing grease and a hand-operated grease gun, gently lubricate all grease fittings after every 500 hours of operation or after 60 days, whichever comes first. If pump service occurs in severe conditions, lubricate more frequently. Use an appropriate type of grease for hot or cold applications.

Upright Portable Hot Oil TCUs Chapter 5: Maintenance 31