Space-Ray Ultra 14, Инструкция по установке, обслуживанию и эксплуатации, Страница: 18 / 22

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6.5.2 To remove any dirt accumulated on the inside surface of the ceramic plaque, direct a supply of compressed air into
the plenum chamber via the venturi.
IMPORTANT: DO NOT DIRECT COMPRESSED AIR AT THE CERAMIC PLAQUE SURFACE AS IT MAY
DAMAGE THE CERAMIC TILES.
6.6 Auxiliary Controls
6.6.1 Room thermostats, time switches, frost thermostats, etc should be checked to ensure correct functioning and are set
to the user requirements.
7. REPLACING COMPONENTS
IMPORTANT: Disconnect gas and electricity supplies to the appliance before carrying out any repair work.
This work can be carried out at high level using a purpose designed access tower, but it is preferable that
this work should be carried out at ground level.
7.1 Electrode Assembly
7.1.1 Disconnect the black HT ignition lead from the ignition electrode by gently pulling the plastic shroud from the Raja
connector of the electrode.
7.1.2 Disconnect the grey flame sensor lead from the flame sensor rod by gently pulling the connector, using pliers.
7.1.3 Unscrew the two M5 nuts securing the electrode mounting plate to the appliance side panel and withdraw the
electrode assembly.
IMPORTANT: DO NOT ATTEMPT TO REMOVE THE TWO M5 SETSCREWS FROM THE APPLIANCE SIDE
PANEL. THESE SCREWS SUPPORT THE PLENUM BOX ASSEMBLY ALSO.
7.1.4 Before fitting a replacement electrode assembly, check that the spark gap is 3.5mm. Insert the re-placement
electrode assembly into the appliance side panel and onto the two M5 setscrews. Secure with the two M5 nuts.
7.2 Ignition Control
7.2.1 Disconnect both the grey flame sensor lead and black HT ignition lead from the ignition control.
7.2.2 Remove the screw securing the ignition control to the Honeywell gas control valve and remove the connection
cover.
7.2.3 Disconnect the 10 way Molex electrical connector from the ignition control and gently pull the ignition control from
the gas control valve.
7.3 Injector
7.3.1 Using a 24mm A/F spanner, unscrew the injector from the injector holder (attached to the venturi) and remove.
7.4 Twin Solenoid Control Valve
7.4.1 Remove the ignition control (see section 7.2) and disconnect the gas supply pipe from the control valve by
unscrewing the four M4 screws securing the flange connector to the control valve inlet port.
7.4.2 Disconnect the electrical supply to the appliance by unscrewing the M3 screw securing the electrical supply socket
to the 4 pin plug attached to the electrical junction box (secured to the gas control valve).
7.4.3 Unscrew the four M4 screws securing the flange connector to the control valve outlet port and lift off the control
valve.
7.4.4 To remove the electrical junction box from the gas control valve, first slacken the gland nut securing the electrical
cable for the Honeywell ignition control (the Ultra HI/LO series of appliances has a second gland nut, securing the
electrical cable for the HI/LO solenoid actuator) Secondly, unscrew the four screws securing the cover to the
junction box and carefully lift away the cover. Unscrew the two screws securing the junction box to the gas control
valve and remove the junction box.
7.4.5 When assembling a replacement control valve, ensure that the 'O' rings, located in the flange connectors are in
sound condition and correctly positioned in the 'O' ring grooves of the connectors.
7.5 Reverberatory Screens
7.5.1 To replace sections of reverberatory screen, it is necessary for the work to be carried out at ground level.