Condensate Trap; Burner Maintenance; Maintenance Frequency; Maintenance Considerations - Bosch Worcester Greenstar Utility 32/50 Installation, Commissioning And Servicing Instruction Manual

7.3.4

Condensate trap

▶ Check the discharge pipe for leaks or damage.
Condensate trap removal:
▶ Release the pipe locking tab [2] and lift connector [1] and flexible
pipe away from the trap [4].
▶ Release the trap locking tab [3] and move the trap [4] up and back to
remove from its mounting [5].
▶ Clean the trap by flushing with water and check pipe work is free from
▶ obstruction.
▶ Check the O ring seals and replace if necessary, grease the seals with
a solvent free grease.
▶ Refit the trap and connections, making sure that the locking tabs are
locked in place.
1
2
4
Fig. 58
Fire valve
▶ Check that the oil supply pipe has a fire valve fitted externally to the
building with the fire valve sensor located within the appliance case.
A fire valve sensor clip is provided for this purpose on the casing
support panel.
Greenstar Utility ErP - 6 720 821 751 (2018/04)
3
4
5
6720821751-39.1Wo
7.4

Burner maintenance

7.4.1

Maintenance frequency

Notes on safety for maintenance.
▶ The periodic maintenance is important for safety,
good operation and long life cycle of the burner,
reducing also consumption and polluting emissions.
The burner must be serviced at least once a year. Only qualified and
authorised personnel shall carry out maintenance and the calibration of
the burner, in accordance with this manual and in compliance with the
local standards and regulations.
Before carrying out any maintenance operation:
• Disconnect the electrical supply.
• Close the fuel isolation valve.
• Pay attention to hot burner components.
7.4.2

Maintenance considerations

• Clean fan and housing and check for damage.
• Check and clean the combustion head.
• Replace the oil nozzle.
• Check the ignition electrodes, readjust or replace as necessary.
• Refit the combustion head.
• Ensure that the electrode settings are correct.
• Check the pump filter and clean if necessary.
• Check and clean the oil filters, replace if necessary.
• Check the condition of the flexible oil hoses and replace if necessary.
• Check oil supply components (pipes, pumps, oil feed pipe) and their
connections for leaks or signs of wear, replace if necessary.
• Check electrical connections and connection cables for damage,
replace if necessary.
• Remove water or contaminants, if present, in the fuel tank.
• Refit the burner.
• Start the burner, check the flue gas data, correct burner settings if
necessary.
NOTICE: Risk of oil leak!
Possibility of leakage due to ageing of oil supply pipe/s.
▶ Check the standard flexible oil supply pipe/s at every
annual service and replace if necessary.
▶ Check the O-ring seal located around the combustion head and
replace if necessary.
DANGER: Risk of escaping combustion gasses!
Leakage of combustions gasses from damaged or
missing combustion head seal.
▶ Always check the seal around the combustion head
before refitting the burner combustion head through
the flange of the appliance.
Inspection and maintenance
37