When the programmer switches off the BOILER channel
then the water circulating pump will be switched off. If
during the period shortly after this the residual heat in the
appliance causes the water temperature in the boiler to
rise above 65ÞC then the pump overrun thermostat will
change over. This will switch on the circulating pump.
BOILER
This thermostat is a safety cut-out device which is
intended to operate if the other controls fail. This control
will “lock-out” and switches everything off except for the
programmer clock and the “Pump Overrun” facility.
This thermostat has to be manually reset once the
temperature has cooled down.
COOKER
This thermostat is a safety cut-out device which operates
if the oven control thermostat fails.
This thermostat automatically resets once the
temperature has cooled down.
28
Electrical Controls
PUMP OVERRUN
FACILITY
OVERHEAT SAFETY
THERMOSTATS
Summary of Contents for Heatranger 440
Page 9: ...Cleaning Fig 6A 9...
Page 22: ...22 Fig 28 DESN 513150 Replacement of parts Electrical controls...
Page 30: ...30 Electrical Controls CONTROL CIRCUIT BOILER Fig 37 L1...
Page 31: ...31 Electrical Controls CONTROL CIRCUIT COOKER Fig 38 L2 L2 KB MODEL ONLY...
Page 32: ...32 Fault Finding WIRING DIAGRAM APPLIANCE 440 460 480K 499K Fig 39...
Page 37: ...Fault Finding 37 Fig 41A DESN 516838...
Page 38: ...38 Fault Finding...
Page 39: ...39 Fault Finding...
Page 40: ...40 Fault Finding...
Page 41: ...41 Fault Finding...
Page 43: ...43...