5
x
Control
33
FA ROTEX A1 BO - 10/2007
5.3
Changing the boiler control panel
Removal (observe sequence)
The position and arrangement of the components described below is shown in fig. 5-18 on page 38.
1.
Remove the sound insulation hood and the boiler panelling. Remove the two heat insulation layers (see section 8.2.1).
2.
Shut the stop cocks in the heating flow and in the heating return flow. Connect the hose to the KFE cock and release water
pressure from the boiler.
3.
Unscrew the pressure gauge capillary tube with the key SW 14 (fig. 5-4). Use a cloth to absorb the small amount of water
that escape on unscrewing the tube.
4.
Unscrew the control panel cover (fig. 5-5) and remove the cable duct cover.
5.
Pull all connectors from the switchboard PCB (fig. 5-6).
6.
Pull out the sensor and the connection cables from the cable ducts of the control panel (fig. 5-7).
WARNING!
Live parts can cause an electric shock on contact and cause life-threatening burns and injuries.
• Before beginning work on live parts, disconnect them from the power supply (switch of fuse, main switch)
and secure against unintentional restart.
WARNING!
There is a danger of scalding from heating water.
The capillary tube of the pressure gauge is directly connected to the pressurised heating water.
• Close the ball cocks on the boiler flow before removing the pressure gauge and depressurise the system.
Fig. 5-4
Remove pressure gauge capillary tube
Fig. 5-5
Unscrew control panel cover
Fig. 5-6
Pull off the coded connector
Fig. 5-7
Pull out the cable
