5
TROUBLESHOOTING/MAINTENANCE
Hard to Pressurize Using Pressure Lever
CAUSES
SOLUTIONS
The Shut-off valve
is not open
.
Open the Shut-off valve
.
Release valve
is not closed.
Close the release valve
.
The o-ring in Pressure connectors
or
is missing, misplaced, or broken.
Replace the o-ring.
Pressure / Vacuum selector
is in
wrong position.
Pressure: pull it out;
Vacuum: push it in.
Pipeline jamed with impurity.
Open the clean-out bolt at the bot-
tom of the pump and clean.
Hard to Fine Adjust Using Fine Adjust Valve
CAUSES
SOLUTIONS
The Shut-off valve
is not closed.
Close the Shut-off valve
.
Calibrator or instrument to be calibrated
is not connected tightly.
Check Pressure connectors
and
. Re-tighten if necessary. Hand-
tightening should be sufficient.
The o-ring in Pressure connectors
or
is missing, misplaced, or broken.
Replace the o-ring.
The end surface of the instrument's con-
nection thread is not smooth.
Use a PTFE washer in Pressure
connector.
The instrument's, calibrator's or hose's
thread does not match the thread on
PGPH's Pressure connectors
or
.
Use proper adapter.
Impurities inside the Fine Adjust volume
or connection.
Repeat pressurizing several times
and then release it suddenly, make
airflow bring the impurity out.
Hard to Turn the Valves or Handles
CAUSES
SOLUTIONS
Valve closed too tight after the previous
calibration.
Do not close shut off valves and
handles too tightly.
The new pump does not run smooth.
The new pump needs time to run in.
Lack of lubrication in threads.
Lubricate the thread.
Содержание PGPH
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