MAINTENANCE
39
HP935, VHP750, MHP825, XHP750, XP1060
XP1060, XP950, HP935, MHP825, VHP750
KEY
A
Adjusting screw
E
Orifice
I
Separator tank
B
Mini compressor
F
Regulation pressure transducer
J
Manual blowdown valve
C
Auto blowdown valve
G
Start/Run solenoid
K
Unloader
D
Unloader solenoid
H
Panel pressure gauge
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).
Adjust the service valve on the outside of the machine to maintain
normal operating discharge pressure (refer to GENERAL
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.
Close the service valve. The engine will slow to idle speed.
CAUTION: Never allow the idle pressure to exceed maximum
allowable pressure (refer to GENERAL INFORMATION).
