MMD Equipment 100S-6B4 - Manual (Page 50)

6. Maintenance/Adjustment
6-1
6.1 Adjustment of Regulator
Do not run the compressor with compressed air supply port open
When adjusting the regulator, be sure to mount a silencer at
the discharge opening to eliminate sound. Wear protective
materials such as earplugs to prevent hardness of hearing.
Regulator is pre-adjusted at delivery from the plant. Never turn the bolt and rod. Otherwise it leads
to maladjustment.
In accordance with the following adjustment procedures, make sure to set engine revolutions to
make governor lever contact high-speed stopper at full load. If the pressure in separator receiver
tank with engine speed set lower than rated speed drops lower than 44 psi (3 bar) discharge air
temperature could rise so much to cause a serious trouble.
Be sure to follow the procedure below when the component is required to be re-adjusted (such as
when the unit has been disassembled).
Ask your nearest dealer if you have any questions.
(Procedure)
① Stop the compressor and adjust the length of the rod
“
3” which is connected to the speed regulator“2”until
its engine governor lever“1”is pulled fully to its
high-speed side. (By shortening length of “L”, the
regulator increases high-speed.) If the engine governor
lever“1”does not reach the end of stopper“4”at its
high-speed side, sufficient speed of the engine, at its
full-load condition, cannnot be obtained. There is no
need for unload revolution readjusttment.
② Adjust the pressure regulator “ 5 ” by turning its
pressure adjustment screw“6”, so that the speed
regulator“2”starts its actuation and decreases the
engine speed when the pressure exceeds 100 psi (6.9
bar). (Pressure increases by tightening the screw, and
decreases by loosening the screw.)
A000074
PDS185S-6B4
L
High
Speed Low
Speed
2 3
4
1
H000059
5
6
D003
2 3 4 1
A040309
PDS100S-6B4
PDS130S-6B4
High
Speed Low
Speed