Motor Connection Instructions - Sullair 20/12 Series Operator's Manual

Figure 6-12 Minimum Pressure / Check Valve
(P/N 250022-735)
* Repair Kit P/N 250022-736
3. Remove the flat washer and heavy spring from the
main body.
4. Tap the piston assembly (with a screwdriver) from
the bottom of the main body and remove. The
seal ring will now be seen easily.
5. Remove the seal ring and discard.
6. Clean piston assembly and valve thoroughly.
7. Replace seal ring and coat the piston and seal
with Parker Super "O" Ring Seal or an equivalent
quality grease.
!
WARNING
Extreme caution should be used when removing the
cap from the body because there is spring tension on
the cap.
8. Reset piston assembly into the main body and re-
position spring and flat washer.
9. Replace retaining cap.
10. Reattach valve to receiver cover and reconnect all
piping.

6.7 MOTOR CONNECTION INSTRUCTIONS

1. Once a year while the equipment is disconnected
from the power source and locked out for mainte-
nance remove tag cover to the motor conduit box.
2. Inspect the rubber boots or connecting insulating
materials covering the motor connections for
signs of thermal damage.
3. If boots or insulating materials remain plyable and
there is no sign of damage, connections are satis-
factory.
4. If boots or insulating material show distress as
mentioned above tag and investigate to deter-
mine the source of thermal damage and repair the
connection as necessary.
5. Replace the damaged boot(s) with new boots as
required or retape connections per National,
State or Local codes.
6. Replace the conduit cover prior to reconnecting
the power source.
!
Electrical shock hazard. Disconnect all power at the
source before attempting maintenance.
6.8 TROUBLESHOOTING
The information in the Troubleshooting Chart is
based upon both the tests conducted at the factory
and the applied situations in the field. It contains
symptoms and usual causes for the described prob-
lems. However DO NOT assume that these are the
only problems that may occur. All available data con-
cerning the problem should be systematically ana-
lyzed before undertaking any repairs or component
replacement procedures.
A detailed visual inspection is worth performing for
almost all problems and may avoid unnecessary ad-
ditional damage to the compressor. Always remem-
ber to:
S Check for loose wiring.
S Check for damaged piping.
S Check for parts damaged by heat or an electrical
short circuit, usually apparent by discoloration or a
burnt odor.
Should your problem persist after making the recom-
mended check, consult your nearest Sullair repre-
sentative or the Sullair Corporation factory toll free at
1-800-348-2722.
Section 6
MAINTENANCE
WARNING
29