User Manual
Druck DPI612
Page 101 of 105
[EN] English – 109M4017 Revision -
8
TROUBLESHOOTING
DPI 612 pFlex
8.1
Fault Symptom
Possible Cause
Check
Unit will not
generate
pressure
with integral
pump.
Mode selector incorrectly set.
Sensor not fitted to sensor
port.
Output port not connected.
Release Valve not closed.
Mode selector is in “+” position.
Sensor (or blank IO620-BLANK) fitted to
sensor port.
Output port connected to DUT or fitted
with suitable blanking plug.
Ensure Release valve is firmly closed.
Unit will not
generate
vacuum
with integral
pump.
Mode selector incorrectly set.
Sensor not fitted to sensor
port.
Output port not connected.
Release Valve not closed.
Mode selector is in “-” position.
Sensor (or blank IO620-BLANK) fitted to
sensor port.
Output port connected to DUT or fitted
with suitable blanking plug.
Ensure Release valve is firmly closed.
Excessive leak
rate, (pressure or
vacuum).
Incorrectly connected
system (DPI612 to DUT).
DUT has leak.
Worn pressure seal on outlet
port (‘O’ ring & backup ring).
Release Valve not closed.
Check connecting accessories are
fitted in accordance with instructions
& correct sealing method is in use.
Isolate DUT from DPI612 & check for
leaks in DPI612 & DUT independently.
Inspect seal on pressure port for signs
of wear & replace as necessary.
Ensure Release valve is firmly closed.
Unit will not
reach desired
pressure.
PRV (if fitted) operating at
lower pressure than
required.
Check PRV range (if fitted) & adjust PRV
if range is suitable. Fit correct range
PRV.Re-fit PRV blanking plug supplied
with unit.
