Chapter 7 – Operational problems
UM-18400E-U ATEQ F580 User manual Page 159/168
Chapter 7
OPERATIONAL PROBLEMS
1. PHENOMENON NOTED
If a test machine begins to detect too many bad parts (statistically more than three
consecutively) it is advisable to carry out a check on the assembly. The quality of the
manufacture and operation of the leak detector should be the last things considered.
1.1. CONDITION OF THE MACHINE'S SEALS
This is the no. 1 fault as the seals are subject to high levels of dirt contamination
(alumina, shavings). Regular cleaning of the seals is an effective remedy.
1.2. DAMAGED INSTRUMENT SEALS
There is a possibility that the seals may be cut by shavings or worn by repetitive
squashing. This can be prevented by regular servicing and replacement of seals.
1.3. BUMPER PAD
This fault may occur after a certain length of time as the bumper pads may be worn or
the pressure settings in the air cylinder may have inadvertently been disturbed. Check
the stability of the measurement and that the bumper pads are correctly installed.
1.4. PNEUMATIC AIR SUPPLY TOO LOW
This anomaly can cause false measurements (large leaks or erratic measurements).
The air supply to the cells must be 0.4 MPa minimum (4 bar) and it is essential that it is
a minimum of 0.1 MPa (1 bar) greater than the test pressure. Also check that sealing
connectors are being used correctly.
1.5. PNEUMATIC LINK
The connecting and reference pipes will age and break with time. ATEQ recommends
the use of RILSAN PA11 pipes and AVS type joints.
1.6. ENVIRONMENT
A measurement may be affected by a variation in temperature due to the environment
(sun, draughts, storage of parts outdoors, handling of the test part by the operator ...).
Dampness of parts may also give rise to errors (insufficient drying after washing,
storage outdoors, condensation, presence of water in the fixture ...).
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