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English–DPI610E Instruction Manual | 141
Relief Valve Test
Step 5
Connect the Device Under Test (DUT) securely to the pressure test port of the DPI 610E. Refer to
“Attach Device Under Test” on page 28 for instructions.
Step 6
Seal the pressure system by closing the pressure release valve securely. For location of this valve
refer to “Parts” on page 19.
Step 7
Select the
PLAY
softkey to start the Relief Valve test. The display will start to show the
Opening
and
Closing
values.
If in
Rising Relief Valve
mode, the
Opening
pressure is continually updated as the maximum
pressure detected once the test has started. The closing pressure is continually updated as the
minimum pressure detected each time a new maximum pressure is recorded.
If in
Falling Relief Valve
mode, the reverse is the case i.e. the Opening pressure is continually
updated as the minimum pressure detected once the test has started. The Closing pressure is
continually updated as the maximum pressure detected each time a new minimum pressure is
recorded.
Assuming the
Rising Relief Valve
mode is used, gradually increase the pressure using the pump
or the volume adjuster towards the Relief valve setpoint or blow down pressure. Around the
setpoint mark, observe the pressure reading when it stops increasing with any further generated
pressure. The
Opening
pressure value should not increase any further and will remain
unchanged. This is recorded as the final opening pressure. Stop generating pressure at this point
and allow the pressure to settle. When the pressure settles below the setpoint mark, the valve will
close, and the pressure reading will settle at minimum value which is recorded as the final closing
pressure.
Step 8
When the
Open
and
Close
pressures
are stable, select the
Stop
icon
softkey to end the test.
The results of the Relief Valve test can
be saved by selecting the
Save
softkey.
Step 9
The default result file name will be the
DPI 610E current date and time stamp.
This can be renamed if required. Select
the
Tick
softkey to confirm the Result
file name and complete the save.
If the results are saved, the test details
will be cleared and the test will be
restarted.
If the results are not saved, a new test
cycle can be set up ready to be run. To
do this, carefully vent the system (open
the pressure release knob) and then
select the
Restart
softkey.