Storage; Additional Service - Craftsman 16781 - Professional 80 Gal. Vertical Air Compressor Owner's Manual

4. Using an adjustable wrench
loosen pressure relief tube nut
at air tank and pressure switch.
Carefully move pressure relief tube
away from check valve.
5. Unscrew the check valve (turn
counterclockwise) using a 7/8"
open end wrench. NOTE the ori-
entation for reassembly.
6. Using a screwdriver, carefully
push the valve disc up and down.
NOTE: The valve disc should
move freely up and down on a
spring which holds the valve disc
in the closed position, if not the
check valve needs to be cleaned
or replaced.
position
nothing is
visible.
In closed position
disc is visible,
7. Clean or replace the check valve.
A solvent, such as paint or varnish
remover can be used to clean the
check valve.
8. Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
9. Replace the pressure release tube.
Tighten nuts.
10. Replace the outlet tube and tight-
en nuts.
11. Perform the Break-in Procedure.
See "Break-in Procedure" in the
Operation section.
ADDiTiONAL SERVICE
Disassembly or service of the air
compressor beyond what is covered
in this manual is not recommended.
If additional service is required, con-
tact your nearest Authorized Warranty
Service Center.
Before you store the air compressor,
make sure you do the following:
1. Review the Maintenance section
on the preceding pages and per-
form scheduled maintenance as
necessary.
2. Set the On/Auto/Off lever to "Off".
3. Close the globe valve.
4. Remove the air tool or accessory.
5. Open the globe valve and allow
the air to slowly bleed from the air
tank until tank pressure is approxi-
mately 20 PSI.
6. Drain water from air tank by open-
ing drain valve 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.
7. After the water has been drained,
close the drain or drain valve.
NOTE: If drain valve is plugged,
release all air pressure. The valve can
then be removed, cleaned, then rein-
stalled.
8. Protect the air hose from damage
(such as being stepped on or run
over).
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