Product Manual

Table Of Contents
6: Maintenance 185 T4F Kubota User Manual
02250216-781 R02
50 Subject to EAR, ECCN EAR99 and related export control restrictions.
6.9.7 Procedure for setting speed & pressure
controls on portable compressors
equipped with poppet valves
Figure 6-5: Control system adjustment
1. Receiver tank C. .25 OD black
2. Compressor unit D. .25 OD orange
3. Pressure regulator / blowdown manifold E. .38 yellow
A. .25 OD white F. .38 OD red
B. .38 OD blue G. .31 OD white (to fitting at unit air filter)
Refer to Figure 6-5. Before adjusting the compressor’s
control system, the rated full-load pressure and the high/
low rpm
settings must be determined. This information is
provided in Section 4.1: Specifications—49HP 185
Kubota on pag
e 35 or
can be obtained by contacting a
Sullair representative.
The following procedure applies to a compressor with
full-load
pressure rating of 100 psig (6.9 bar).
NOTICE
Operating the compressor below its minimum
specified idle speed will damage the compres-
sor. Operating the compressor in this
condition
will cause coupling and/or compressor failure.
1. Start the compressor and allow the engine to
war
m-
up to its normal operating temperature
with the service valve closed.
2. Adjust the pressure regulator so that the
comp
ressor
maintains 115 psig (8 bar).
3. Open the service valve to 100 psig (6.9 bar)
(rated full load pressure) and recheck top
engine speed and control response. Close the
service valve and allow the compressor to
cycle and re-check low engine speed (idle).