MPC1-1000 and MPC1-3000 User’s Manual
5.
T
ROUBLESHOOTING
5.1
GENERAL INFORMATION
The MPC1 consists of three valves: a variable volume (VV), a pressure gauge and various tubing
and fittings. Several predictable problems can arise while using the instrument and are addressed in
this section. It is recommended that whomever performs the following troubleshooting procedures
become familiar with the system schematic (see Section 6.1) including the VV description (see
Section 6.2).
For problems not covered in this section, or direct technical assistance and/or for ordering information
on replacement components, please contact the Technical Service Department.
5.2
LEAKS
Pressure leaks are the most common problem found in pressure handling equipment. Normally, the
first step is to determine if the leak is within the MPC1 or if it is outside of the unit.
To determine if the leak is within the MPC1, you must disconnect the unit at the test connection and
plug it. Establish similar conditions under which the leak was observed and determine if the leak is
still present. For small leaks, it may be necessary to install an appropriate pressure sensing device
at the test port, user discretion required. In some cases, it is useful to perform simple leak checks
on the most common outside sources before disconnecting the test system.
Leaks inside the MPC1 are unusual unless there has been some disassembly.
Because of the close fitting components and short tubing runs, some users may find it beneficial to
return the MPC1 to
DHI
for repair rather than perform the troubleshooting and repair themselves.
To do so, contact
DHI
Technical Service.
More than one leak can exist in a system so fixing one does not guarantee a leak tight system.
Therefore, continue executing the troubleshooting procedures until all leaks are located
and corrected. Since a troubleshooting guide that will cover every conceivable possibility is
impractical, the source of your leak may not be shown here.
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© 2001 - 2007
DH Instruments, a Fluke Company
