TF and RF Series
B&S Commercial Kitchens
17
▪
Check if pilot flame is in contact with thermocouple
•
No pilot flame
▪
Check main gas valve is in “ON” position.
▪
Ensure pilot injector is not blocked
•
Gas valves which are difficult to turn
P
ANEL
R
EMOVING
1.
It is not necessary to remove any side or back panels for servicing the unit.
2.
To remove the front panel, it will be necessary to pull off the thermostat control knob then undo the two screws
holding the panel to the front hob section.
C
ONTROLS
If gas control fails to operate, check the following;
1.
The thermocouple is in the pilot flame. The thermocouple must be hot in order to generate energy to operate an
electromagnetic system to lift and maintain open the control valve.
2.
To do so, it is necessary to generate approximately 650 milli-volts. If not functioning correctly, the thermocouple
should be replaced.
3.
Check both main and safety thermostats switching systems. If thermostat is malfunctioning, it should be
replaced.
T
HERMOSTAT
1.
Pull thermostat knob off and unscrew thermostat from control panel.
2.
Remove control panel.
3.
Remove both terminals from the thermostat.
4.
Remove thermostat capillary gland and remove thermostat bulb.
5.
To fit new thermostat, reverse the above procedures.
P
ILOT
A
SSEMBLY
1.
Undo the two screws holding the pilot bracket onto the burner mount bar.
2.
Gently pull the pilot assembly bracket down and outwards.
3.
To change thermopile
a.
Undo locking screw holding thermopile to pilot assembly bracket and gently pull the thermopile down.
b.
Undo terminal screws on located on ‘TH TP’ and ‘TP’ on main gas valve
.
c.
Replace with new thermopile and assemble in reverse order.
4.
To change thermocouple
a.
Undo locking screw holding thermocouple to pilot assembly bracket and gently pull the thermocouple
down.
b.
Undo thermocouple screw located in the main gas valve.
c.
Replace with new thermocouple and assemble in reverse order.
5.
To change new pilot assembly
a.
Follow steps 1 and 2
b.
Undo the two screws on the pilot mounting bracket and pilot bracket
c.
Follow procedures 3. A. and 4. A. listed above
d.
Remove piezo lead from piezo
e.
Undo pilot gas flexible tube
f.
Change pilot assembly over and reassemble in reverse order
P
IEZO
A
SSEMBLY
1.
To change piezo ignitor
a.
Undo the piezo screw located on the back of the piezo ignitor located on the bottom right hand side of
the main gas control
b.
Gently remove piezo lead from rear of piezo ignitor
c.
Replace piezo ignitor and replace in reverse order
2.
To change piezo lead
a.
Gently remove piezo lead from rear of piezo ignitor
b.
Gently remove piezo ignitor lead from pilot assembly
