DH Instruments PPC4, Operation And Maintenance Manual

Page: 27 / 228

2. INSTALLATION
Page 15 © 2009 DH Instruments, a Fluke Company
2.4.3 Leak Test
If desired, perform a leak check of the test system (see Section 3.2.18).
2.4.4 Purge
If an SPLT is included and installed in the test line (see Section 2.3.7.1) and the Device Under Test
(UUT) may be contaminated with liquids, perform a purge of the UUT (see Section 3.2.27.4). The
Purge function must first be enabled (see Section 4.5.7.4 for Basic Interface and Section
5.7.12.3 for Advanced Interface). This will rid the UUT of contaminating liquids.

Caution
Operating the PPC4 connected to a system with liquid contaminants
without taking proper precautions to purge the system and test line may
cause contamination of the PPC4 that will require non-warranty service.
2.4.5 Check Pressure Control Operation
2.4.5.1 Basic Interface
Select a pressure range using in the Main Menu <Range> selection (see Section
4.4.1).
In the Main Menu press <Setup>, <Control>, <Dynamic> (see Section 3.2.2.1).

to return to the Main Run Screen.

, key in a target pressure within the active range and

.
(see Section 4.2.1).
2.4.5.2 Advanced Interface
Select a pressure range using [AutoRange], Range: (see Section 5.7.1).
Select dynamic control mode with the control mode shortcut (see 5.6.1 and
Section 5.7.8.2).

to return to the Main Run Screen.

, key in a target pressure within the active range and

.
(see Section 5.5.1).

Caution
Verify the maximum pressure rating of the system connected to the PPC4
TEST(+) port before entering a target pressure. Do not enter a target
pressure greater than the pressure rating of the system connected to the
PPC4 TEST(+) port.
PPC4 should set the target pressure and indicate Ready (see Section 3.2.3) continuously in
15 to 60 seconds. If it does not, see Section 8 to troubleshoot.