6. Faults
22
WIKA Operating Instruction, model CPP4000-X
EN
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but pressure decays when
valves A and B are operated.
being used.
procedure is being followed
(see chapter 5.5 “Procedure”).
If unable to locate a cause.
Return test pump to DH-
Budenberg/WIKA for
investigation.
Equipment provides pressure
but pressure decays to lower
value then remains steady.
Insufficient liquid in pressure
balance.
Check liquid level in reservoir.
Fill reservoir with correct liquid
as necessary (see chapter
5.5.1).
Air in the system
Pre-fill component under test
with appropriate liquid. If
necessary re-fill pressure
balance with appropriate liquid.
If unable to locate a cause.
Return test pump to DH-
Budenberg/WIKA for
investigation.
Internal damage
Return test pump to DH-
Budenberg/WIKA for
investigation.
Incorrect operating procedure
being used.
Ensure that correct operating
procedure is being followed
(see chapter 5.5 “Procedure”).
If unable to locate a cause.
Return test pump to DH-
Budenberg/WIKA for
investigation.
The spindle pump of the test
pump becomes very stiff to
operate when the test pump is
being used in the range below
140 bar (2,000 lb/in²).
Internal damage
Return test pump to DH-
Budenberg/WIKA for
investigation.
The spindle pump of the test
pump becomes very stiff to
operate when the test pump is
being used in the range over
140 bar (2,000 lb/in²).
Incorrect operating procedure
being used.
Ensure that correct operating
procedure is being followed
(see chapter 5.5 “Procedure”).
If unable to locate a cause.
Return test pump to DH-
Budenberg/WIKA for
investigation.
For contact details, please see chapter 1 “General information” or the back page
of the operating instructions.