Spheros thermo 231, Workshop Manual

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9 Repair Thermo 230 / 231 / 300 / 301 / 350
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9.2.8 Igniter Box, Replacement
9.2.8.1 Removal
1. Remove burner if required (refer to 9.2.3.1).
2. Using screw driver lever off igniter electrodes
(Fig. 904) from igniter box and remove.
3. Remove disk (6).
4. Remove screws (2) with lock washers.
5. Withdraw igniter box (1) and remove.
6. Perform procedures on components after
disassembly (refer to 9.1.1).
9.2.8.2 Installation
1. Locate igniter box (1, Fig. 904) for installation, plug on
making correct electrical connections and secure with
screws (2) and lock washers.
2. Tighten screws (2) with 5 Nm + 1 Nm.
3. Plug on disk (6) and align.
4. Plug on igniter electrodes (3).
5. Install burner (refer to 9.2.3.2).
9.2.9 Flame Sensor, Replacement
9.2.9.1 Removal
1. Remove burner if required (refer to 9.2.3.1).
2. If required lever off igniter electrodes (Fig. 904) from
igniter box using screw driver and remove.
3. Remove disk (6).
4. Remove screw (14) and lock washer.
5. Withdraw flame sensor (15) and remove.
6. Perform procedures on components after
disassembly (refer to 9.1.1).
9.2.9.2 Installation
1. Position flame sensor (15, Fig. 904) for installation,
plug on to make correct electrical connections and
secure with screw (14) and lock washer.
2. Tighten screw (14) with 5 Nm + 1 Nm.
3. Plug on disk (6) and align.
4. Plug on igniter electrodes (3).
5. Install burner (refer to 9.2.3.2).
Fig. 904 Igniter Box and Flame Sensor, Replacement (Sheet 1 of 2)
Igniter box
Igniter electrodes
Removal and
installation of
igniter electrodes
Flame sensor