Page 34
7
Operational errors / Malfunctions
7.1
What to do if the autoclave malfunctions
________________________________
If the autoclave does not seem to be working properly (e.g. poor drying, warnings, or error reports) then
follow these instructions in order to exclude possible operational errors. ..Following these instructions
continue to work with the autoclave. If the malfunction occurs repeatedly then contact our dealer, and
authorised MELAG customer service or contact MELAG directly. You should describe the problem precisely
and include the works number of your appliance.
7.2
Malfunctions without display messages
_________________________________
7.2.1 No
display _______________________________________________________________________
After switching on the autoclave, the display should show the initial setting (see Section 4.1.2).
If there is no display: Check:
Exchange the two power fuses (page 4, Fig. 1, Pos. 9) under the switch as follows: Disconnect the power
cable and remove the screw cap over the fuses using a screwdriver or a coin. Exchange the fuses (two
reserve fuses are on the inside of the door lining) then replace the screw cap and reconnect the autoclave to
the power supply. If there is still no display when the autoclave is switched on, or if the display blacks out
repeatedly, please inform your specialist dealer. If you exchange the fuses, order two new spare fuses
through your dealer (MELAG-Art. No. 57590).
1. Is the cable plugged into the mains?
2. Is the mains supply OK:? (if necessary check with another appliance).
3. Exchange the two power fuses (page 4, Fig. 1, Pos. 9) under the switch as follows: Disconnect the
power cable and remove the screw cap over the fuses using a screwdriver or a coin. Exchange the
fuses (two reserve fuses are on the inside of the door lining) then replace the screw cap and
reconnect the autoclave to the power supply. If there is still no display when the autoclave is
switched on, or if the display blacks out repeatedly, please inform your specialist dealer. If you
exchange the fuses, order two new spare fuses through your dealer (MELAG-Art. No. 57590).
7.2.2 Excessive
water
consumption ______________________________________________________
The consumption of distilled or demineralized water will vary depending on the program and the load in the
autoclave. If much more water is consumed than the amount specified in the Annex (see Section 9.2), then
you should:
1. Check that the autoclave has been set up correctly, and is higher at the front, so that condensation can
flow out at the back (see Section 2.3).
2. Check that the condensation outflow is not blocked by dropped, instruments, filter paper, etc. on the floor
of the pressure chamber.
3. If neither of these measures help to reduce water consumption, please inform your specialist dealer.
7.2.3 Poor
drying ______________________________________________________________________
Good drying depends only on the correct operation of the autoclave, but also on the way the autoclave is
loaded. If drying is not satisfactory:
1. Check that the autoclave has been set up correctly, and is higher at the front, so that condensate
can flow out at the back.
2. Check that the condensation outflow is not blocked by dropped, instruments, filter paper, etc. on
the floor of the pressure chamber.
3. Check that the maximum load has not been exceeded (particularly for textiles), that the autoclave
has been loaded properly (no direct contact with the walls of the pressure chamber), and that the
appropriate tray-rack assembly has been used (see Section 4.2).
4. Activate automatic pre-heating (see Section 6.5).
5. Start with "Additional heating" (see Section 6.2).
6. If none of these measures help to reduce water consumption, please inform your specialist dealer.
