Thermostat Actuator Maintenance; Control System Adjustment - Sullair ES-6 5H Operator's Manual And Spare Parts List

Section 6
MAINTENANCE
Before doing compressor maintenance, discon-
nect compressor from power source and lock out
power source. Isolate compressor from line pres-
sure by closing recommended discharge shut- -
off valve and releasing all internal pressure from
compressor.
Assure that line pressure gauge on compressor
indicates "ZERO" pressure before any work is
done. Failure to comply can cause injury.
1. Unscrew the minimum pressure valve from the
drive housing.
2. Remove all parts.
3. Clean and inspect all parts.
4. Remove the screw holding the check valve seat.
Replace valve seat. Reinstall securing with Loc-
titeR #222.
5. Install new o--ring. Before reinstallation, lubricate
with Parker Super "O" ring seal or an equivalent
grease.
6. Reinstall the whole valve assembly. Tighten and
secure.

THERMOSTAT ACTUATOR MAINTENANCE

Refer t o F igur e 6 --
need replacement is the thermostat valve actuator.
For replacement, follow the procedure explained
below.
Before doing compressor maintenance, discon-
nect compressor from power source and lock out
power source. Isolate compressor from line pres-
sure by closing recommended discharge shut- -
off valve and releasing all internal pressure from
compressor.
Figure 6 ---6 Air Pressure Switch (P/N 250025 ---299)
20
!
WARNING
!
WARNING
5. T he only par t w hic h would ev er
!
WARNING
Figure 6 ---5 Thermostat Actuator(P/N 250025 ---413)
* Repair Kit P/N 250028---036
1. To prevent spillage and loss of re--usable fluid,
place a contaminate--free fluid receptacle be-
neath fluid drain valve and fluid filter.
2. Drain fluid by removing fluid drain cap at tee lo-
cated beneath compressor.
3. Unscrew and remove hollow hex plug.
4. Remove spring and piston.
5. By using long nosed pliers, pull the actuator out.
6. Install new actuator.
7. Install piston and spring with centering guide.
8. Re--install plug.
9. Refill compressor with fluid before operating.

CONTROL SYSTEM ADJUSTMENT

Refer t o F igur e 6 -- 6. All c omponents in t he Contr ol
System are designed and manufactured to close tol-
erances to eliminate any need for adjustments. The
only adjustment required is to set the air pressure