Schwank calorSchwank D 15U, Техническое руководство

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infraSchwank D / calorSchwank D - shape U
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12 Service guide /
Trouble
shooting
Maintenance and annual check
A regular maintenance is the requirement for a
faultless operation of the appliance.
According to the National Standard Regulations,
heating-systems with radiant tubes must be checked
at least once a year.
Maintenance and trouble shooting is only allowed by
professional personnel that is competent and
instructed in radiant tubes.
Maintenance must include the following checks:

Check the surface of radiant tubes

Check the pollution and sooting of tubes

clean (if necessary)

Check tightness of the tube system including
connection to the burner unit

Check the air/flue-system

clean (if necessary)

Check the gas connection

Leakage-test

Check the connection pressure, nozzle pressure
and start step

Check gas filter in case of reduced line
pressure, in case of pollution change filter set

Check the safety functions of the ignition- and
ionisation-controls

Check the valve functions

Check the function of the pressure switch

Check the electrical connections

Check the slope of the tubes (3 mm/m in
direction of the turn around box connection)

Check the flexible gas hose and electrical
connection to the burner unit

Check the room temperature control

Check the distances to any flammable materials

Check the air/flue ventilation of the room

Remove condensation water in the tube

Check correct connection of the reflectors

Check if the fan impeller runs correctly and is
free of any damages

Check the tight fit of the fan venturi

Check connection and tightness of the fan to the
burner unit
Any deviations must be fixed immediately. Defect
parts must be changed directly.
Pressure switches, pressure regulators, valves and
safety- and ignition devices can only be maintained
by the manufacturer or authorized personnel.
Trouble Shooting
In case of doubt, please contact:
Mr. John Balass
Devex Systems Pty Limited
5/83 Bassett St
Mona Vale NSW 2103
Tel: 02 9997 2811
Fax: 02 9997 7852
fault reason
Burner does not start
• No gas (check pre- and nozzle
pressure)
• Fault in electrical supply
• Thermostat "OFF"
• Connection of ignition- and ionisation
electrode is wrong
• Differential pressure switch is defect or
out of order (contact must be open)
• Flame signal wrongfully caused by
electrical defect of control
• Pressure differential is not sufficient
Control goes in fault
position during the
safety time • No flame (no ignition, valve doesn't
open, no gas)
• No or poor flame signal (flame does not
stick, bad insulation of the flame
detector, no contact between burner
and earth connection)
• W rong polarity
Control goes into • Flame is off
fault position during
operation • Contact of differential pressure switch
opens
• Flame signal is poor
Control goes in fault
position during pre-
purge period