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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_
h e 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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