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Westward Operating Instructions and Parts Manual Model 3JR70A
Portable Air Compressor
13- ENG
Maintenance
CUSTOMER RESPONSIBILITIES
Daily
or after
each
use
Before
each
use
●
●
Check Safety Valve
Drain Tank
NOTE: See "Operation" section for
the location of controls.
Unit cycles
automatically when
power is on. When performing
maintenance, you may be exposed
to voltage sources, compressed air,
or moving parts. Personal injuries
can occur. Before performing any
maintenance or repair, disconnect
power source from the compressor
and bleed off all air pressure.
TO CHECK SAFETY VALVE
If the safety valve
does not work
properly, over-pressurization may
occur, causing air tank rupture or
an explosion.
1. Before starting compressor, pull
the ring on the safety valve to
make sure that the safety valve
operates freely. If the valve
is stuck or does not operate
smoothly, it must be replaced
with the same type of valve.
TO DRAIN TANK
1. Set the On/Auto/Off lever to
"OFF".
2. Turn the regulator knob
counterclockwise to set the outlet
pressure to zero.
3. Remove the air tool or accessory.
4. Pull ring on safety valve allowing
air to bleed from the tank until
tank pressure is approximately 20
psi. Release safety valve ring.
5. Drain water from air tank by
opening drain valve (counter-
clockwise) on bottom of tank.
Water will
condense in the
air tank. If not drained, water will
corrode and weaken the air tank
causing a risk of air tank rupture.
6. After the water has been drained,
close the drain valve. The air
compressor can now be stored.
NOTE: If drain valve is plugged in,
release all air pressure. The valve
can then be removed, cleaned, and
reinstalled.