Comark C9500 Installation Manual
PRESSURE
TEST PUMP
OPERATOR MANUAL
CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Pressure Test Pump Kits . . . . . . . . . . . . . . . 4
1.2 Release Valve . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Volume Control. . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Over Pressure Protection . . . . . . . . . . . . . . . 5
1.5 Pressure/Vacuum Selection . . . . . . . . . . . . . 5
2. GUIDELINES FOR USE . . . . . . . . . . . . . . . . . . . 6
2.1 Calibration/Comparison against
Comark Digital Pressure Meter. . . . . . . . . . 6
2.2 Use with High Resolution Pressure
Ranges (1mBar) . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Fault Investigation . . . . . . . . . . . . . . . . . . . . 8
3. PERFORMING HYSTERESIS TESTS . . . . . . . 10
3.1 Increasing Pressure. . . . . . . . . . . . . . . . . . . . 10
3.2 Decreasing Pressure to Measure
Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4. SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . 13
1
1. INTRODUCTION
The pressure test pump is a dual portable source of
either vacuum or pressure supply. Each pump
incorporates a vacuum/pressure selector and a volume
control feature for fine adjustment.
WARNING
THE HAND PUMP IS CAPABLE OF GENERATING
PRESSURES IN EXCESS OF 200 PSI. TO
PREVENT DAMAGE IT IS ESSENTIAL NOT TO
OVER PRESSURE ANY GAUGE CONNECTED TO
THE PUMP.
2
n
o
p
q
r
n Pressure port — 3/8" BSP Parallel female connection
o Fine adjustment valve
p Pressure release valve
q Pressure/vacuum selector
r Adjustable stroke for varying maximum pressure
output (over pressure protection)
3
1.1 Pressure Test Pump Kits
The TK1 kit can be used with the Kane-May
KM5000 series and the TK2 kit with the C9500
series pressure meters and provides the capability
to set up and check the calibration of pressure
gauges, switches, pressure to current convertors
and other pneumatic instruments.
Note: Do not overtighten the hexagonal nut when
connecting the pressure meter tubing to the hand
pump or the pressure pump could be damaged.
1.2 Release Valve
This can be used to reduce or release the pressure
in the system. The rate of pressure reduction is
dependent upon the degree of rotation when
opening the valve. Minimal force is required to seal
the system. Excessive force may damage the
internal seals.
1.3 Volume Control
The pressure generated can be finely adjusted by
turning the volume control valve either clockwise
or anti-clockwise to increase or decrease pressure
accordingly.
IMPORTANT: Under no circumstances
should the volume control valve o be wound
back beyond the red line indicator on the
body. Should this occur, then the pressure
must be released from the system before
attempting to re-engage the volume control
valve.
4
pp
p
pp
oo
o
oo
VOLUME CONTROL VAL VE
RED LINE
INDICATOR
RELEASE
VALVE
1.4 Over Pressure Protection
To adjust the maximum output pressure of the
system turn the nuts r to increase or decrease the
stroke length.
1.5 Pressure/Vacuum Selection
qq
q
qq
Press the selector q as indicated on the label to
engage the desired mode. Ensure that the release
valve p is fully closed (clockwise motion) prior to
pumping.
Notes:
1. The pump should only be used for pressurising
small volumes due to its small displacement.
2. If the pump has not been used for a period of
time, it could be difficult to operate on the
first stroke. This is due to the piston seal
drying slightly.
3. The cylinder has been lightly greased on
assembly but, if additional lubrication should
ever be required, then apply a minimal
amount to the inside of the cylinder. Access is
via the three retaining screws located under
the black collar.
For release valve seal replacement, please contact
Comark Service Department or your Distributor.
5
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