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MAINTENANCE
Performing preventative maintenance (PM) helps to keep your nVent HOFFMAN AC unit operating at the highest most efficient levels.
Maintenance should be performed at least twice a year, more frequently when in challenging conditions, such as dusty, high humidity, high
heat, oily or corrosive environments.
Product failures due to lack of maintenance may impact warranty coverage.
Condenser and evaporator air movers (FANS)
Fan motor requires no maintenance. All bearings, shafts, etc. are lubricated for the life of the motor during manufacturing.
Compressor
The compressor requires no maintenance. It is hermetically sealed, properly lubricated at the factory and should provide years of satisfactory
operating service. Visually inspect the compressor for proper operation, mounting, visible signs of exposure to high heat.
Should the refrigerant charge be lost, recharging ports (access fittings) on the suction and discharge sides of the compressor are provided
for recharging and/or checking suction and discharge pressures.
Under no circumstance should the access fitting caps/covers be loosened, removed or tampered with unless by authorized refrigeration
repair service personnel. Breaking of seals on compressor access fittings during warranty period will void warranty on hermetic system.
Recharging ports are provided for the ease and convenience of reputable refrigeration repair service personnel for recharging the air conditioner.
Inlet air filter
Proper maintenance of the ambient air filter is critical to normal operation of the air conditioner. If filter maintenance is delayed or ignored,
this can result in decreased performance and/or premature failure of the compressor and other air conditioner components.
Do not run the air conditioner for extended periods of time with the filter removed. Particles of dust, lint, etc., can plug the fins of the
condenser coil which will give the same reaction as a plugged filter. The condenser coil is not visible through the filter opening, so protect it
with a filter. Continued operation under the above conditions can and will damage and shorten compressor life.
How to remove, clean or install a new inlet air filter
Research Products (RP) aluminum washable air filters are designed to provide excellent filtering efficiency with a high dust holding capacity
and a minimum amount of resistance to air flow. Since they are constructed entirely of aluminum, they are lightweight and easy to service.
Optimum filter performance is maintained by recoating the filters after washing with RP Super Filter Coat adhesive. To achieve maximum
performance from your air handling equipment, air filters should be cleaned on a regular basis.
The inlet air filter is located up inside the front panel of the unit cover. To remove the filter, lift up to clear the support tabs, and pull out and
down. The filter may now be cleaned or a new filter installed.
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