AIR N ARC
®
200 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 6: MAINTENANCE
090019-OP_r0
PAGE - 67
of the unloader valves, consult
Section 6.3,
Maintenance Schedule Table
.
6.5.3.1 LOW PRESSURE VALVE MAINTENANCE
Refer to
Figure 6-4
for low pressure valve assembly.
1. Locate the low pressure unloader valve [
A
] as
indicated in
Figure 6-3
.
2. Remove the copper tubing [
A
] connected to
the tee on the top of the low pressure
unloader valve [
C
].
3. Remove the tee [
B
] connected to the upper
cover [
F
].
4. Remove the two (2) 5mm capscrews [
D
] and
spring washers [
E
] securing the upper cover
[
F
] in place.
5. Remove the valve assembly, which consists
of:
• Upper cover gasket [
G
]
• Unloading piston [
H
]
• Viton o-ring [
J
]
• Unloading spring [
K
]
• Unloading cylinder [
L
]
• Lower unloader gasket [
M
]
• Unloading fork [
N
]
• Washer [
P
]
• Bolt [
Q
]
6. Remove viton o-ring [
J
] from piston shaft.
7. Clean the piston [
H
], bore (inner cylinder
chamber of [
L
]) and spring [
K
] with soap and
water.
8. Dry the assembly parts.
9. Apply a small amount of o-ring lubricant to
viton o-ring [
J
], and reset onto the piston
shaft [
H
].
10. Reassemble the parts in order, taking care to:
TOOLS/ITEMS NEEDED
REPLACEMENT
PART(S)
Hex Head Key (5mm)
Low Pressure Valve
Assembly
Replacement Kit No.
RC46552
(if applicable)
Screw Driver (Small)
ISO68 Compressor Oil (to
lubricate the gaskets)
Pipe Sealant
WARNING
Relieve pressure from the compressor
system before performing maintenance
on any components.
WARNING
Before performing maintenance or repair
operations on the machine, ensure that
all power has been removed and locked
out to prevent accidental start-up.
CAUTION
The piston springs of the valves are
under tension: when unscrewing the
valve body use a wrench to loosen
enough to move by hand. Then relieve
tension gradually the rest of the way.
NOTE
After disassembling the valve, if the parts
appear to be too worn or damaged, order
the Low Pressure Valve Assembly
Replacement Kit no. RC46552, and
consult Section 6.5.3.2, Low Pressure
Valve Replacement.
