Switchboard Maintenance - Riello RS 34 MZ Installation, Use And Maintenance Instructions

OPENING THE BURNER
(A)
(B)
(C)
D3846
D3876
D3877
16
TO OPEN THE BURNER (A):
- Switch off the electrical power.
- Remove screw 1) and withdraw casing 2).
- Disengage the articulated coupling 3) from
the graduated sector 4).
- Remove screw 5) only if the models have a
long head, retract the burner on guides 6) for
around 100 mm. Remove the probe cables
and then retract the whole burner.
Now extract the gas distributor 7) after having
removed the screw 8).
Remove the screws 2)(C)p. 7 and tighten the
two extensions 25)(A)p.4 supplied with the
burner.
Retighten the two screws 2)(C)p.7 on the termi-
nal of the extensions.
ATTENTION
!
Proceed with the assembly of the
inner part of the combustion head,
tightening the screw 8)(A) with a tight-
ening torque of 4 ÷ 6 Nm.
TO CLOSE THE BURNER (A):
- Push the burner up to approximately 100mm
from the pipe coupling.
- Reconnect the leads and slide in the burner
until it comes to a stop.
- Replace the screw 5) and carefully pull the
probe and electrode cables outwards until
they are slightly taut.
- Re-couple the articulated coupling 3) to the
graduated sector 4).
- In the long head models, unscrew the exten-
sions and reposition them in the appropriate
space; tighten the screws to the guides
2)(C)p.7.
- Reposition the casing 2) and lock with the
screw 1).

SWITCHBOARD MAINTENANCE

If it is necessary to carry out maintenance on the
switchboard 1)(B), it is possible to remove only
the fan unit 2)(B), to allow improved access to
the electrical components.
With the burner open as in fig.(A), unhook the
tie-rod 3)(B), removing the screw on the variable
profile cam, and extract it from the tip 4)(B).
At this point, disconnect the cables relating to
the air pressure switch, the servomotor and fan
motor.
Remove the 3 screws 5)(B) positioned on the
protective cover.
Removing the 2 screws 6)(B), it is possible to
unthread the fan unit 2)(B)
guides 7)(B).
Finally, you can use 2 of the 3 screws 5)(B) to
fasten the electrical switchboard to the pipe cou-
pling, in the points indicated in fig.(C), and then
carry out the maintenance operations.
from the