Air Receiver Pressure Adjustments - Clarke SE Ranges Operating & Maintenance Instructions

AIR RECEIVER PRESSURE ADJUSTMENTS

THE SAFETY VALVE (ITEM 6, FIG. 2 & 3) FITTED TO THIS COMPRESSOR IS FACTORY
If it is necessary to alter the pressure settings on the compressor please remember
that increasing the pressure will NOT increase the volume of air supplied.
Any adjustments must be made with the compressor at working pressure.
ELECTRIC MACHINES
DISCONNECT FROM ELECTRICITY SUPPLY BEFORE REMOVING ANY COVER.
a. NEMA Pressure Switch
Fig.4
b. CONDOR Pressure Switch - Type MDR1
WARNING:
SET AND MUST NOT BE ADJUSTED.
WARNING:
(shown with cover removed).
PRESSURE ADJUSTMENT:
To increase the cutout pressure, turn the hexagon (A) on
top of the pressure switch clockwise.
To reduce the cut out pressure, turn it anticlockwise.
RANGE ADJUSTMENT:
To increase the pressure differential between cut in and
cutout, turn the toothed wheel (B) situated under the large
spring anticlockwise, using a screwdriver. In it's present
position, the pressure SWITCH is set to the minimum range.
NOTE: These operations must always be performed with
the PRESSURE SWITCH under pressure.
Toremove the cover, complete with rotary switch, simply
unscrew and remove the single securing screw, adjacent
to the rotary switch, and pull off the cover.
Pressure adjustment is effected by turning the screw 'A'
clockwise to increase, anticlockwise to reduce.
No provision is made for pressure differential.
An information sheet for this component is provided with
the machine's documentation
10
(shown with cover removed).