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d. Faulty valve
Check whether there is voltage on the magnetic valves during their period of
operation. If there is no voltage a wire is broken or the PC board is damaged.
If the lid does not open at the end of the cycle; air enters, but there is still 20 - 40%
vacuum in chamber, vacuum valve does not close (needs to be serviced).
e. Control board failure
This board software is allowing access to a "Diagnostics Menu". Only qualified
service technicians are authorized to access this menu by entering a security
password.
By acceding either the "D1 input test" feature or the "D2 output test" feature, a
trained technician will be able to quickly know the origin of the problem: pump,
sealing system, pneumatic problem, security switches problem, etc...
Keep in mind that in most cases trouble is due to a leakage, loose electrical
Keynesian or evident damage to the main component: vacuum pump, valves...,
electrical contactors, thermal overload, fuses holder or transformer.
For assistance do not hesitate to contact your local service technicians.
7. Maintenance
Routine controls must be made a qualified technician, contact your local service
center.
Routine controls list:
Check teflon for wear.
Check silicone rubber for burnt spots and smooth even position.
Check pressure bar for jamming.
Check lid sealing for damage and hardened spots.
Check switch-point of micro switch, adjust if necessary.
Check evacuation hose for damage (contraction of diameter, or abrasions).
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