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Upright Portable Hot Oil TCUs Chapter 5: Maintenance 31
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.