- OMEGA Engineering, Inc. Hand Pump Product Manual

PPA100
PNEUMATIC HAND PUMP
INSTRUCTION
SHEET
M-4367/0906
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The OMEGA PPA100 Hand
Pump is designed to be a simple
to use pressure and vacuum
source for calibrating process
control instrumentation.
Combined with one of our
pressure calibrators, the PPA100
makes a complete Pressure/
Vacuum Calibration System.
Operation
The drawing shows the
operation of the controls on the
PPA100. The pump is designed
for use with ambient air only.
Pump Valve Assembly
Cleaning Instructions
Occasionally, the PPA100 may
not work properly due to dirt or
other contamination of the
internal valve assembly. Use the
following procedure for cleaning
the valve assembly.
1. Using a small screwdriver,
remove the 2 valve retention
caps located on opposite
sides of the pump below the
pressure/vacuum switch.
2. After the caps have been
removed, gently remove the
spring and o-ring assembly.
3. Set aside the valve
assemblies in a safe area
and clean out the valve body
using a cotton swab soaked
in IPA (isopropyl alcohol).
4. Repeat the process several
times using a new cotton
swab each time until there is
no remaining evidence of
contamination or dirt.
5. Operate the pump handles
several times and recheck for
contamination.
6. Clean the o-ring assembly
and the o-ring on the
retention caps with IPA and
inspect the o-rings closely for
any damage or excessive
wear. Replacements are
included in the repair kit, if
needed.
7. Inspect the springs for wear
or loss of tension. They
should be approximately 8.6
mm long in the relaxed state.
If shorter, they may not
provide sufficient sealing
tension. Replace if needed.
8. Once all parts have been
cleaned and inspected,
reinstall the o-ring and spring
assembly into the valve body.
9. Reinstall the retention caps
and gently tighten each cap.
10. Seal the output port and
operate the pump to at least
50% of capacity.
11. Release the pressure and
repeat several times to
ensure that the o-rings seat
properly.