Specifications
7
NOTE:
a. Should the motor fail to start immediately, it is probable
that the air receiver is already full of air. Check the
tank pressure gauge (see fig. 2). If you release air, by
opening air outlet tap, the motor will start
automatically once the cut-in pressure is reached.
b. The compressor is fitted with a pressure relief valve,
shown at A, fig 2A, to allow ‘no load’ starting. It is normal
for this valve to vent air for a short period when starting.
4. Before connecting your airline to the compressor
allow it to run with the air outlet tap completely
open for 15 to 20 seconds, to permit a good
distribution of the lubricating oil.
5. Close the outlet tap then connect one end of suitable air hose to the
compressor air outlet, and the other end to the equipment to be used.
Set the outlet pressure by adjusting the Output Pressure Regulator. To do this,
pull the Regulator Knob upwards and turn the knob clockwise to increase
pressure, anticlockwise to decrease. Pushing the knob down again holds the
pressure setting. Read the operating pressure on the outlet pressure gauge.
NOTE:
F
or most spray work do not exceed 50 psi (unless following paint manufacturer’s instru-
ctions). For other airline equipment such as air tools, tyre gauges, staple guns, paraffin guns
etc., it may be necessary to set the operating pressure at a higher (or lower) level.
IMPORTANT:
Always refer to the accessory manufacturers’ recommendations
for optimum operating pressures for their equipment.
6. With operating pressure set, reopen the air outlet tap.
7. The Pressure Switch, located within the plastic cover beneath the ON/OFF
knob, should not require adjustment. This is an automatic device and has
been preset at the factory to stop the motor when pressure in the receiver
reaches its maximum, and to start it again when the pressure in the receiver
falls to the minimum preset value. This operation is completely automatic and
does not affect the spraying process in any way. However, should problems
develop with the cut-in, cut out settings, please consult your Clarke dealer, or
the Clarke Service Dep’t.
NOTE:
Fig. 2A
A. If the machine pumps continuously without
cutting out then the compressor is too small for
the application/tool being used, and damage
may result. Consult your Clarke dealer.
B. The motor is protected by a Thermal Overload
so that if the motor overheats for any reason -
the thermal overload will trip, stopping the motor.
To restart, allow a period for the motor to cool
down - 10 minutes or so, before pressing the Reset
Button (arrowed in fig.3).
Fig. 3
10
FAULT FINDING
PROBLEM
PROBABLE CAUSE REMEDY
The compressor
stops and will not
start again.
Bad connections.
Check the electrical
connections.
Clean and tighten as
necessary.
Blown fuse
Overload cutout
switch has tripped.
Renew/Replace fuse
Switch off and wait 10 minutes
before pressing the reset button.
The compressor
does not reach
the set pressure
and overheats
easily.
Compressor head
gasket blown or valve
broken.
Wait for compressor to cool
down, disassemble the head
and replace any broken
components.
Carefully clean all sealing
surfaces before reassembling.
If in doubt contact your
nearest dealer.
NOTE: It is also possible that
you are using more air than
the compressor is capable of
delivering.
Compressor does
not start.
Air receiver charged
(see also item 1)
Open drain cock to expel air.
Compressor should start again
when pressure reduces to
approx 95 psi.
Air leaking from
the pressure switch
valve when the
compressor is not
running.
Faulty non-return
valve.
First drain the receiver
completely of air. Remove the
valve end plug, carefully
clean the valve seat and the
gasket and reassemble. See
Fig 8.
Air pressure from
the regulator will
not adjust.
Replace RegulatorThe diaphragm within
the regulator body is
broken.
The compressor is
very noisy and
makes a metallic
knocking sound.
Return the machine to your
nearest service agent.
Compressor damaged
and needs overhaul.
Fig. 2A