44
Multimat
®
Touch:
1. Unscrew cover and lift off in an upward direction (until the press stamp is freely
accessible).
2. Disconnect protective conductor from cover.
3. Remove insulating disk.
4. Disconnect thermo element from the two rear terminal studs.
5. Remove thermo element complete with hole bar, then remove terminal insulation.
6. Disconnect the heating wire ends of the muffle from the two front terminal studs (you
need a 12 mm and a 8 mm wrench).
7. Remove muffle from insulation insert - if the furnace is hot, handle with care at the
heating wire ends.
Fitting:
Caution!
Wear textile gloves when fitting the new muffle, in order to prevent the quartz tubing from
coming into contact with hand sweat.
A new muffle is fitted by following the above instructions in reverse order.
Note: After changing of the muffle we recommend to re-calibrate furnace temperature by
running the calibration test (Silver wire test; section 6.5)
Warning!
Make sure that the wire ends do not have any contact with the metal shell of the
furnace upper section. Reconnect protective conductor to the lid.Do not nip the
protective conductor wire between Alu –vessel and lid!
7.5 Replacement of control unit
Warning!
Before opening this unit, disconnect mains cable from mains socket.
Service work on open units must be carried out by qualified personnel only.
Caution!
The firing chamber must be located in its top stop position.
1. Disconnect mains plug
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