5
4.2 Air Compressor Safety Valve
The air compressor safety valve, located on the head of the air compressor, is factory preset
to prevent the air compressor from delivering air over 115 PSIG(+/- 2 PSIG). Check for
proper operation. If adjustment is required, use the following procedure while the
compressor is operating.
A.
Adjust pressure switch cut out to 115 PSIG. Refer to Figure 5.
B.
Referring to Figure 6, loosen the safety valve lock nut and adjust the nut until the
maintained pressure is 115 PSIG and the relief valve is releasing air.
C.
Allow the compressor to cycle through the cycling pressure range several times and
soap test to insure the safety valve is tight and does not leak.
D.
If the safety valve is defective and requires changing, always check replacement
valve for proper adjustment.
E.
Readjust air compressor pressure switch cut out to 110 PSIG.
4.3 Air Compressor Pressure Switch
The pressure switch is factory set to stop and start the air compressor and maintain the
pressure in the air storage tank. The pressure in the air storage tank will cycle between 80
PSIG(+/- 2 PSIG) and 110 PSIG(+/- 2 PSIG) as noted on the tank pressure gauge. To adjust
the ON/OFF pressure switch, refer to Figure 5 below.
Step 1: Turn clockwise to increase
both cut-out and cut-in pressure.
Step 2: Turn clockwise to increase
cut-out pressure without affecting
cut-in pressure.
Figure 5
Air Compressor Pressure Switch
