Multitest ND
Operator's manual
-
10
-
Performing tests
For the time intervals against which leak-tightness tests and functional tests are to be carried
out, refer to the manual provided by the equipment manufacturer. Always perform tests against
the specifications found in the relevant equipment manual.
Important note on performing tests
Do
NOT
apply medium pressure to the lung-governed demand valve while it is attached to
the equipment connector.
Be sure to strictly adhere to the following sequence of steps in order to prevent the tester and the
lung-governed demand valve from being damaged:
- Detach the lung-governed demand valve from the equipment connector.
- Apply medium pressure to the lung-governed demand valve.
- Attach the pressurized lung-governed demand valve to the equipment connector.
Normal-pressure equipment
Lung-governed demand valve
—leak-tightness without positive medium
pressure
Attach the lung-governed demand valve to the equipment
connector.
Seal the connecting nipple of the lung-governed demand valve.
Move the “pressure pump” lever to the “OPEN” position.
Press and hold the pump push-button.
Let the pressure build up until it is slightly higher than the level required
for testing and move the “pressure pump” lever to the “CLOSED”
position.
Release the pump push-button.
Release pressure via the relief valve until the level required for testing is
reached.
Perform the test against the specifications provided by the equipment
manufacturer.
