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4-6-8 Test
end
To exit the test status, press the vent switch
. Test is completed and the test port is
vented to atmospheric pressure.
Methods of venting include two: normal venting and double venting. (Refer to the DIP
switch setting for how to set it.)
!
CAUTION
Venting the test port
Before venting, do not remove the blank flange or test object from the test
port nor vent the test port by other method than by operation of the
controller.
The equipment may be damaged.
(1) Normal venting
Auto flow fine
1.8E-10 Pa·m
3
/s
1) Test is under way by auto flow.
↓
Press
Test mode L
Standby
2) Press the vent switch
. Test is completed and the test
port is vented to atmospheric pressure.
3) Control returns to the test mode standby state.
(2) Double
venting
Auto flow fine
1.8E-10 Pa·m
3
/s
1) Test is under way by auto flow.
↓
Press
Test mode L
Test complete
↓
Press
2) Press the vent switch
once.
3) Test
is
completed.
4) Press the vent switch
for a second time.
Test mode L
Standby
5) Vent the test port to atmospheric pressure to return to test
mode standby.
* If it is desired to hold the test object or piping in vacuum without venting it when test is
completed, provide a valve between the test port and test object. The test object can be held in
vacuum by executing venting after closing the valve.
* If it is not desired to admit water or oxygen into the piping when venting, purge the test port with
dry nitrogen. Refer to the method of purging the test port for how to purge.
* In double venting, re-test cannot be executed simply by pressing
once and exiting the test.
Press
for a second time and execute venting before making test.
Summary of Contents for HELIOT 301
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