Replacing Important Components - MBM MINIMA Serie Instrucciones Para La Instalación, El Uso Y El Mantenimiento

4.

REPLACING IMPORTANT COMPONENTS

To be performed exclusively by authorised technical service!
In order to replace these components, it is important to first do the following:
- Shut off the gas supply outlet valve
- Drain the containers and the water tub.
- Disassemble the front panel with the thermostat knob (P Fig. 4), the lever (M Fig. 4).
A) Safety Valve/Thermostat (Fig. 3)
- Unscrew the gas inlet (10) and outlet (13) connections with a size-19 spanner
- Unscrew the pilot burner inlet (15) with a size-10 spanner
- Unscrew the thermocouple (16) with a size-9 spanner
- Disassemble the bulb (14) with a size-8 spanner
- Install the new thermostat
- Check the idle screw, bypass (11); it should comply with Table II.
- Attention: Make sure the bulb is positioned properly in the plate and check the gas sealing with bubble soap.
B) Thermocouple (Figs. 1 and 3)
- Unscrew the thermocouple of the safety valve (16 Fig. 3) with a size-9 spanner
- Unscrew the pilot thermocouple (4 Fig. 1) with a size-10 spanner
- Install the new thermocouple.
C) Spark plug (Fig. 1)
- Detach the high-voltage wire from the spark plug (10)
- Unscrew the nut (9) with a size-10 spanner
- Install the new spark plug
- Connect the high-voltage wire.
D) Piezoelectric Igniter (Z Fig. 4)
- Detach the high-voltage wire from the igniter
- Unscrew the nut behind the panel
- Install the new piezoelectric igniter
- Mount back the front panel and the knob (P Fig. 4) and the lever (M Fig. 4).
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