29
MAXIN 24e & 28e
8.19.6
Disconnect all pipe unions at the base of
the appliance.
8.19.7
Remove lower fixing screws (fig. 11) and lift
appliance off upper bracket.
8.19.8
Remove two screws securing vessel at top.
Disconnect expansion pipe at base of
expansion vessel and lift vessel out of the
appliance.
8.19.9
Reassemble in reverse order, using new
fibre washers.
8.20
Safety Valve
Part No. 4250 Refer to figs.32 & 33
8.20.1
Gain General Access 8.4.
8.20.2
Close heating flow and return valves (fig.
6a) by turning butterfly top 1/4 turn until
head is 90° to the valve body.
8.20.3
Drain appliance via safety valve by 1/4 turn
of safety valve knob.
8.20.4
Disconnect safety valve discharge pipe.
8.20.5
Unscrew safety valve from manifold
8.20.6
Replace in reverse order.
8.21
Removal of Electrical Components
8.21.1
Ensure electricity is switched off at main
isolator and gain general access as 8.4.
8.21.2
Flow Microswitch
Fig. 1, no. 23
8.21.3
Gain general access 8.4
8.21.4
Release microswitch from hydraulic group
by removing one securing clip.
8.21.5
Remove microswitch cover by unscrewing
3 securing screws & disconnect electrical
connections within.
8.21.6
Reassemble in reverse order ensuring
correct location of electrical connections.
(see fig. 38 for electrical connections)
8.21.7
Domestic Microswitch
Fig. 1, no. 13
8.21.8
Gain general access 8.4
8.21.9
Release micro switch from hydraulic group
by removing one securing clip.
Fig. 33
Domestic
Distribution
Manifold
Retaining
Clips
Thermistor
Sensor
Bypass
Tube
Domestic
Heat Exchanger
Safety
Valve
D.H.E.
Securing Screws
Pressure Pipes
3 Port Valve
& Flow Switch
Manifold
Heating Return
& Cold Water
Inlet Manifold
