GPC1-10000 / GPC1-16000
™
OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 24
4.2
PURGING THE SUMP (DRAIN)
The GPC1 sump (see Figure 6, Ref 10) is designed to collect liquids that may be returned from the
pressure supply or system/device under test so that they do not contaminate the rest of the system. The
sump has a limited volume should be drained regularly as part of normal operation. The purge process
below should also be used when a DUT is connected that is known to contain liquids (see Section 3.2.5).
The procedure to purge the GPC1 sump and/or a DUT connected to GPC1 is:
Use GPC1 to pressurize the system, including the DUT, to approximately 3 500 kPa (500 psi) (do not
exceed the pressure of the system or the DUT connected to GPC1).
Open
the
DRAIN port
(see Figure 9). Use the 5/8 in. open end wrench supplied in the GPC1
accessories to slowly and then more fully open the port allowing gas to exhaust as quickly as is safe
and practical.
Observe whether the gas coming out of the
DRAIN port
contains liquid or liquid vapor.
Repeat
steps through until there is no evidence of liquid in the gas that vents through the
DRAIN
port
.
Figure 9.
Drain Port Location
4.3
CLEANING/REPLACING PDVV DRIVE AIR FILTER ELEMENT
There is a filter on the
PDVV DRIVE port
. If the drive air supplied is excessively dirty, this filter may
become excessively dirty and restrict air flow to the PDVV actuator (see Section 3.1, Figure 6).
The drive air filter is a filter body with a sintered element. To clean or replace the filter the filter body must
be removed from GPC1.
To remove and reinstall the drive air filter
, proceed as follows (numerical references in this section
refer to Figure 10):
Place GPC1 on the bench, so that the front panel is up with the open bottom towards you.
Disconnect the filter downstream filter connection fitting (2) and move the 1/4 in. PFA flexible tubing
(1) away from the filter body (3). Then disconnect the upstream filter connection (4) and remove the
filter body (3).
To reinstall the filter, make the upstream filter connection (4). Then make the downstream filter
connection (2). Use caution to ensure that the filter body (3) is oriented in the correct direction
(the arrow on the filter body is in the direction of flow in from the
PDVV DRIVE port
).
