DRIVE ADJUSTMENTS
MOTOR SHEAVE ADJUSTMENTS
VL, VM, & 2VP VARIABLE PITCH KEY TYPE MOTOR SHEAVES
The driving and driven motor sheaves should be in align- ment with each other and the shafts parallel.
VL & VM SHEAVES ADJUSTMENT
1.Loosen set screw “B” using a 5/32" Allen key.
2.Making half or full turns from closed position, adjust sheave pitch diameter for desired speed. DO NOT OPEN MORE THAN FIVE FULL TURNS.
3.Tighten set screw “B” securely over flat.
4.Carefully put on belts and adjust belt tension. DO NOT FORCE BELTS OVER GROOVES.
5.Ensure all keys are in place and the set screws tight before starting drive. Recheck set screws and belt tension after 24 hours service.
NOTE: Future adjustments should be made by loosening the belt tension and increasing or decreasing the pitch diameter of the sheave by half or full turns as required. Readjust belt tension before starting drive.
C
B
VL & VM
SHEAVE DIAGRAM
NOTE: Do not operate sheave with flange projecting beyond the hub end.
MAINTENANCE
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE, REFER TO THIS MANUAL. FOR ADDITIONAL ASSISTANCE OR INFORMATION, CONSULT A QUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.
CAUTION
SHEET METAL PARTS, SCREWS, CLIPS AND SIMILAR ITEMS INHERENTLY HAVE SHARP EDGES, AND IT IS NECESSARY THAT THE INSTALLER AND SERVICE PERSONNEL EXERCISE CAUTION.
The Self Contained Packaged Air Conditioner and Heat Pump should operate for many years without excessive service calls if the unit is installed properly. However it is recommended that the homeowner inspect the unit before a seasonal start up. The coils should be free of debris so adequate airflow is achieved. The return and supply registers should be free of any obstructions. The filters should be cleaned or replaced. These few steps will help to keep the product up time to a maximum. The Service section that follows should help in identifying problems if the unit does not operate properly.
FILTERS
CAUTION
TO PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR FILTER INSTALLED IN THE RETURN AIR SYSTEM.
Every application may require a different frequency of replace- ment of dirty filters. Filters must be replaced at least every three (3) months during operating seasons.
Dirty filters are the most common cause of inadequate heat- ing or cooling performance. Filter inspection should be made at least every two months; more often if necessary because of local conditions and usage.
Dirty throwaway filters should be discarded and replaced with a new, clean filter.
Disposable return air filters are supplied with this unit. See the unit Specification Sheet or Technical Manual for the cor- rect size and part number. To remove the filters, remove the filter access panel on return side of the unit.
CABINET FINISH MAINTENANCE
Use a fine grade automotive wax on the cabinet finish to maintain the finish’s original high luster. This is especially important in installations with extended periods of direct sun- light.
CLEAN OUTSIDE COIL (QUALIFIED SERVICER ONLY)
The coil with the outside air flowing over it should be inspected annually and cleaned as frequently as necessary to keep the finned areas free of lint, hair and debris.
CONDENSER, EVAPORATOR, AND INDUCED DRAFT MOTORS
Bearings on the air circulating blower motor, condenser mo- tor and the combustion fan motor are permanently lubricated. No additional oiling is required.
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