GTR-3455
Doc Ref: Page: 32
Date: 13/01/13 Issue: H
Pr
seal
®
uk
Tray Sealing Solutions
5. FAULT DIAGNOSIS
There are various methods of assisting with the machine fault diagnosis, but the most productive
results come from the logical approach, coupled with a good understanding of the machine.
We recommend that, although this section outlines some common product fault conditions you may
encounter on your machine, it is more important that you understand the principles of operation and
control sequences. The table below details some potential faults which may occur during the
operation of the machine. If a fault occurs which you are unable to diagnosis contact Proseal.
If you have a fault condition:
ELIMINATE THE "OBVIOUS" - e.g. Low air pressure, power failure, guard’s open or emergency
stop button depressed. Always ensure that all sensors are correctly positioned and aligned.
CONSULT YOUR MACHINE'S DOCUMENTATION - Study the available drawings, control
circuits, control programs, etc.
Unless you have a clear understanding of the design of the machine you are unlikely to RECTIFY
FAULTS (although you may succeed in temporarily curing the SYMPTOM).
Variations in the lidding and tray material quality may cause sealing problems on the machine,
endeavour to eliminate these before attempting heat adjustment.
If, however, you are unable to resolve any problems do not hesitate to contact us. We are always
available (24/7) with expert advice and assistance. Telephone Proseal 01625 8566
Noisy or difficult to turn during
rotation
Worn bearings
Check bearing condition. Replace if
required.
Machine table contaminated with product or
packaging
Clean area around machine table and
bearings
Table catching on tooling or guarding
Check guards are fitted correctly.
Check the top tool is secure.
Check the tool is correct for the
machine type
Table damper adjusted incorrectly Check damper adjustment.
Machine noisy during
operations.
Check silencers are fitted and in good
condition.
Replace damaged or missing
silencers
Pneumatic fittings leaking Refit or replace leaking fittings
Seal and eject cylinder slow to
actuate
Low air supply to machine.
Incorrect regulator setting.
Leaking fittings or control devices
Check air supply to machine and
regulator setting. Refit or replace
leaking fittings
Noisy during rotation
Worn roller bearings
Replace worn bearings and check
condition of shafts.
Drive belts incorrectly adjusted.
Motor bearings worn.
Drive pulleys loose or worn
Rollers running against machine sideplates
Tension drive belts correctly.
Check condition of motor.
Remount pulleys or replace.
Reposition film feed rollers and check
bearings.
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