Tjernlund GPAK-J,JT,1,1T (Discontinued) 8504013 Rev 3 09/97 - Manual (Page 14)

AIR FLOW ADJUSTMENT
1. With all exhaust fans and appliance operating as instructed in “Safety
Interlock/Combustion Air Test”, set the Air Flow Adjustment by loosening
locknut and turning rod handle. CAUTION: HANDLE MAY BE HOT, USE
PLIERS TO MOVE HANDLE. Position of rod handle indicates the position
of Air Flow Adjustment inside housing.
2. Using pliers, move handle towards minimum draft setting until spillage is
detected at draft hood relief opening, then re-open Air Flow Adjustment just
enough to eliminate spillage.
3. Lock Air Flow Adjustment at desired setting by tightening locknut.
4. Return appliance, doors, windows, exhaust fans and fireplace dampers to their previous conditions of use.
MAINTENANCE
1. For optimum motor life, oil motor every six months with 2 drops of S.A.E. #20. The oil ports are located on the top of the motor.
Magnetek motors do not need to be oiled.
2. The homeowner must semiannually inspect the Vent Hood and vent pipe for blockage, corrosion and leaks.
3. A vent system inspection must be performed annually by a qualified service agency. The inspection should include the operation
circuit check, safety interlock test, combustion air test and a visual inspection of the complete vent system for corrosion, blockage
or leaks. Any corrosion, blockage or leaks detected must be repaired or replaced immediately.
TROUBLESHOOTING
The following guide is intended to be used if a problem occurs during the use of the GPAK side wall vent system. At several steps
throughout the guide you will come in close contact with 115 Volts. Extreme caution must be exercised to prevent injury. If you
are unable to determine the defective part with the use of this guide, call your Tjernlund distributor or Tjernlund Products direct at
1-800-255-4208 for further assistance.
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