Champion R30D Operation Maintenance Manual & Parts List page 15

COMPRESSOR PILOT VALVE PRESSURE ADJUSTMENT
Proceed with the following instructions while compressor is running:
1. Loosen locknut (4) and back off several turns. Do not turn differential pressure adjustment nut (3).
2. Check reading on the tank pressure gauge. Set the compressor maximum pressure by turning threaded
cap (1) clockwise to increase pressure or counter clockwise to decrease pressure. Pressure setting
must be 5 psig less than setting of pressure switch.
3. After pressure is set, tighten locknut (4). Be careful not to move threaded cap (1).
COMPRESSOR PILOT VALVE DIFFERENTIAL PRESSURE ADJUSTMENT
Proceed with the following instructions while compressor is running:
1. Loosen locknut (2) and back off several turns.
2. Check reading on the tank pressure gauge. Set the pressure to 30 psig differential (unload at 170 psig,
reload at 140 psig). Turn nut (3) clockwise to increase differential pressure or counterclockwise to decrease
differential pressure.
3. After pressure is set, tighten locknut (2). Be careful not to move nut (3).
15
B890-B
(Ref. Drawing)