11
FAULTS AND REMEDIES
FLOW SWITCH BLOCK
The burner goes out. The flow switch block lamp lights up on the control panel.
This means lack of water. Check the water level in the service tank.
STEAM BLOCK
The burner goes out and steam temperature thermometer pointer exceeds
200°C. The steam block lamp lights up on the control panel. This means a
capacity defect in the water pump or excessive fuel capacity in the burner
pump.
a - Water pump defect Check the pump capacity: open valve 13, collect the
outlet water in a bucket for 1 minute, then weigh it and determine the pump
capacity in liters/h. The capacity must coincide with the steam output of the
boiler.
E.G. : a 1.000 Kg/h boiler is equal to 16.7 litres/Minute. If the capacity is
insufficient:
1) remove the water pump bell, check the suction and delivery valves and
relevant seat. Change them if necessary.
2) open lid on the pump head and check the piston gaskets. Change them if
necessary (see water pump instructions).
b - Defect on fuel side Contact the burner service manual.
CHIMNEY BLOCK
The burner goes out. The chimney block lamp up on the control panel. To start
burner again, press the reconnection push-button on the thermostat. The
chimney block indicates that the boiler is dirty. Clean the boiler with a pressure
water jet and drain from plug.
Note The action of the safety equipment: flow switch, steam block, chimney
block, causes stoppage of the burner flame. The limit block lamp lights up on
control panel. To resume the operation, press “limit release’’ push button.
