Ingersoll-Rand P185WIR, Operating, Maintenance & Parts Manual

Page: 35 / 119

35
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Book: 22305593 (8/03)
P185WIR Speed and Pressure Regulator Adjusting Instructions
Before Starting
1. At the Pressure Regulator (on service pipe
near receiver tank), remove the cover to
expose the adjusting screw. Loosen the
jam nut and turn screw counterclockwise
until tension is no longer felt at the screw.
Then, turn screw clockwise one full turn.
2. Close service valve(s).
The engine idle and full speed settings are set and
sealed at the factory, and should not be adjusted.
Serious injury may result if the full speed is
increased. Removal of the seals without
authorization could affect the warranty. If speed
settings are lost due to engine fuel pump service
or other repairs, the speed settings can be reset as
follows:
3. Inspect throttle arm (G) on engine gover-
nor to see the arm is resetting against
FULL stop (L) on governor. Loosen jam
nut on air actuating cylinder (A) and then
turn cylinder rod (D) until throttle arm (G)
is forced against stop (L).
4. If equipped, push the SERVICE AIR but-
ton on the control panel, making certain
the button does not pop back out. The unit
should speed up and then unload (and
drop back to IDLE). With the unit un-
loaded, turn the adjusting screw on the
pressure regulator clockwise until the dis-
charge
pressure gauge indicates
125--130 psi. Tighten the pressure regula-
tor jam nut. Replace cover.
5. With the service valve closed, adjust IDLE
speed (*). Adjust speed using adjusting
rod (D). Tighten jam nut (H).
6. Open the service valve and adjust the dis-
charge pressure to 100 psi (700 kPa).
Now turn adjusting rod (C) until the proper
engine FULL speed setting (*) is reached.
Tighten jam nuts (B & J)
7. To obtain maximum cfm at any pressure
between 80 psi (550 kPa) and maximum
pressure rating (*), make adjustment at
the pressure regulator to obtain desired
discharge pressure at FULL engine
speed. Lock adjusting screw and replace
cover.
* See General Data Specifications.
After Starting Unit
H
FULL
J