SECTION 6: MAINTENANCE
AIR N ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
PAGE - 82
090010-OP_r0
1. Turn handle of drain valve [
A
] to release
moisture buildup. If preferred, place a
container below the valve to catch discharge.
2. Close the valve after the water has drained
off.
6.5.10 CHECKING THE AIR TANK RELIEF VALVE
The pressure relief valve on the air tank should be tested
frequently to assure proper operating condition. To test
the relief valve, see
Figure 6-11
, and use the following
procedure:
Note: the tank must have a quantity of air in order to test
the relief valve.
1. Locate the valve at the end of the air tank.
2. Grasp the ring and pull; when working
properly, a hissing sound of escaping air will
be heard.
3. Let go of the ring; the valve should
automatically reset into its containment
position, and the hissing sound should stop.
NOTE:
If a hissing sound of escaping air is persistent,
and the valve will not reset, replace the valve.
6.5.11 REBUILDING THE MINIMUM PRESSURE/
CHECK VALVE
Should a condition occur that requires the minimum
pressure/check valve to be serviced (see
Section 7.2,
Troubleshooting Guide
), a repair kit is available. To
repair the minimum pressure/check valve, order
minimum pressure/check valve kit no. 264154-106. Refer
to
Figure 6-12
, and the following procedure:
1. With the machine off and the ignition key
removed, open the hood panel.
2. Locate the minimum pressure/check valve [
A
]
situated under the coalescer element on the
compressor unit.
TOOLS NEEDED
REPLACEMENT
PART(S)
Clean Cloth
Minimum Pressure/
Check Valve
Rebuild Kit No.
264154-106
Figure 6-11: Air Tank Pressure Relief
Valve
