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30
MAINTENANCE
9/230 9/230HA 9/270 9/270HA 9/300 9/300HA 10/300HA 12/235 12/235HA
KEY
A
Adjusting screw
B
Mini compressor
C
Auto blowdown valve
D
Unloader solenoid
SPEED AND PRESSURE REGULATION ADJUSTMENT
Normally, regulation requires no adjusting, but if correct adjustment
is lost, proceed as follows:
Refer to the diagram above.
A: Adjusting screw
Start the machine (Refer to STARTING INSTRUCTIONS in the
OPERATING INSTRUCTIONS section of this manual).
9/270, 9/300, 12/235, 17/235, 21/215, 9/270HA, 9/300HA, 10/300HA, 12/235HA, 17/235HA, 21/215HA
E
Orifice
F
Regulation pressure transducer
G
Start/Run solenoid
H
Panel pressure gauge
normal
INFORMATION) and full speed position. If the tachometer moves away
from the full speed position before normal operating discharge
pressure is attained, then turn the adjusting screw 'A' clockwise to
increase the pressure. Optimum adjustment is achieved when the
throttle just moves from its full speed position and the pressure
increases slightly.
CAUTION: Never allow the idle pressure to exceed maximum
allowable pressure (refer to GENERAL INFORMATION).
I
Separator tank
J
Manual blowdown valve
K
Unloader
Adjust the service valve on the outside of the machine to maintain
operating
discharge
Close the service valve. The engine will slow to idle speed.
pressure
(refer
to
GENERAL
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