Servicing Manual
3
INDEX OF CONTENTS
1
Operational diagrams and sequences
1.1
Indirect-fired heaters with flue
1.2
Direct-fired heaters without flue
1.3
Heaters with and without flue: operational sequence
1.4
Safety options in case of abnormal operation
2
Functional description of components
2.1
Casing/Frame
2.2
Motor/fan assembly
2.3
Fuel circuit
2.4
Burner head/Combustion chamber
2.5
Electrical board
3
Troubleshooting guide - Operating flow-chart
3.1
Checking the supply voltage
3.2
Checking/replacing the power cord
3.3
Checking/replacing the motor
3.4
Checking/replacing the fan
3.5
Exhaust gas analysis. Combustion air adjustment
3.6
Cleaning the fuel tank
3.7
Checking/cleaning/replacing the fuel filter
3.8
Checking/cleaning/replacing the fuel nozzle
3.9
Checking/cleaning/replacing the burner head and the whirl disc..
3.10
Cleaning the combustion chamber
3.11
Replacing the motor/pump joint
3.12
Checking/adjusting/replacing the fuel pump
3.13
Checking and replacing the fuel solenoid valve
3.14
Checking/cleaning/replacing the ignition electrodes
3.15
Checking/replacing the high voltage cables
3.16
Checking/replacing the ignition transformer
3.17
Replacing the fuse
3.18
Checking/cleaning/replacing the flame sensor
3.19
Checking/replacing the overheat thermostat
3.20
Checking operation of flame control unit
4.1
Setting chart - Indirect-fired heaters with flue
Setting chart - Direct-fired heaters without flue
Technical data sheets for indirect-fired heaters with flue
Technical data sheets for direct-fired heaters without flue
4.2
Wiring diagrams - Basic version and versions with filter and nozzle fuel pre-heater
4.3
Special tools for servicing
