~
WARNING: All electrical work described
in
this brochure should be done by
l..,U a.QUALIFIED and AUTHORIZED technician.
3.4 Daily cleaning:
For hygienic cleanliness, it is imperative to clean chamber and-spacers daily. Also clean the
lid rubber to assure tight seat
of
the lid.
Cleaning instructions for gas injection nozzles: Periodically on a regular basis the gas
injection nozzles must be removed with the connection tube and soaked in a food grade
soap and water solution, then dried and re-installed.
4. TROUBLE SHOOTING:
4.1 Failure during packaging cycle:
4.1.1 "COVER DOWN ERROR" message is displayed
on
LCD(manual units):
The input signal
of
the down position switch has been lost during cycle execution.
- Check limit switch adjustment.
4.2 Insufficient vacuum:
4.2.1
4.2.2
Leakage
in
the bag:
Most frequently, insufficient vacuum in bags is due to leakage in bag and not due
to any fault
of
the machine.
Pin-hole leak
for
which there is no obvious explanation is
due
to faulty bag
material. .
Pin-hole leak caused by sharp edge
of
the product (bone, etc.).Use bone-guard or
thicker film.
Tear
in bag by careless handling (sharp edge on filling table, damage made
by
retailer
or
customer).
Leakage in lateral
or
bottom seal, complain to supplier
of
bags
or
film.
No leakage in the bag:
Bag is too large, therefore the surplus
of
air remains visible (there is surplus
of
air
in 0.4%
of
t_he bag volume in each bag). Use bags
of
suitable size.
Vacuum time is too short:
Pressure bar is jammed and closes opening
of
bag during evacuation.
4.2.3 Insufficient vacuum
in
chamber:
If
troubles described under 4
.2.1
and 4.2.2 do not apply, there is something wrong
with the evacuation. To find the leakage quickly, check
for
leaks with a precision
vacuumeter, going back step by step from the chamber to the pump.
16
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