Reducing Pressure; Vacuum Generation - WIKA CPP7-H Manual De Instrucciones

5. Commissioning, operation
Due to the small stroke of the hand test pump, test only test items with small
volumes.
1. Turn the pressure relief and switching valve
2. Turn the fine adjustment valve
3. Turn the pressure relief and switching valve
4. Use the ram to pump until the desired pressure is approximately achieved.
7
5. Use the fine adjustment valve,
+7 bar (+101.5 psi)
⇒
Turn clockwise in order to increase the pressure.
⇒
Turn anticlockwise in order to reduce the pressure.
After increasing the pressure, the value displayed can drop slightly again for
about 30 seconds.
The causes can be thermodynamic effects, the hose connection and the
sealings.
Readjust the pressure using the fine adjustment valve
drop, check the measuring circuit for leaks.

5.6 Reducing pressure

1. Turn the pressure relief and switching valve
desired pressure is approximately achieved.
2. Turn the pressure relief and switching valve
3. Turn the fine adjustment valve
⇒
Turn clockwise in order to increase the pressure.
⇒
Turn anticlockwise in order to reduce the pressure.

5.7 Vacuum generation

1. Turn the pressure relief and switching valve
2. Turn the fine adjustment valve
3. Turn the pressure relief and switching valve
4. Use the ram to pump until the desired vacuum is approximately achieved.
7
5. Use the fine adjustment valve,
-0.85 bar (-12.3 psi).
⇒
Turn clockwise in order to reduce the vacuum.
⇒
Turn anticlockwise in order to increase the vacuum.
After increasing the vacuum, the value displayed can rise slightly again for
about 30 seconds.
The causes can be thermodynamic effects, the hose connection and the
sealings.
Readjust the pressure using the fine adjustment valve
rise, check the measuring circuit for leaks.
WIKA operating instructions, model CPP7-H
to the "VENT" setting.
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anticlockwise, until a slight stops is felt.
5
to the "PRESSURE" setting.
13
until the desired pressure is reached exactly; max.
5
carefully to the "VENT" setting, until the
13
back to the "PRESSURE" setting.
13
until the desired pressure is reached.
5
to the "VENT" setting.
13
clockwise, until a slight stops is felt.
5
to the "VACUUM" setting.
13
until the desired vacuum is reached exactly, max.
5
. If the pressure still
5
. If the pressure still
5
13
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