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14. MAINTENANCE GUIDE
WARNING: Improper adjustment, alteration, service or maintenance
can cause property damage, injury or death.
Read the installation, operating and maintenance instructions thoroughly before
installing or servicing this equipment. Service to the heater must be performed
by a qualified gas service technician.
Keep the appliance area clear and free from combustible materials, gasoline and
•
other flammable vapors and liquids.
The flow of combustion and ventilation air to the heater must not be obstructed
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Annual servicing and cleaning of the heater by a qualified service technician is es-
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sential for continued efficient operation.
Periodically visually inspect the tile burner for proper operation:
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Proper combustion will cause the tile burner surface to appear a bright lumi-
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nous orange
If a "dark spot" appears on the tile burner surface, dust or other contaminant
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has accumulated In the tile perforations and cleaning is required (see below)
Servicing and cleaning of the heater must be performed by a qualified gas
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service technician
An annual inspection and servicing should be carried out by qualified gas service
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technician as follows:
Clean the ceramic tile with compressed air. Avoid directing air stream at
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gasket material between tile and heater body. The air pressure must be
lower than 20 psi [140 kPa].
Clean the venturi tube with compressed air. The air pressure must be low-
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er than 20 psig [140 kPa].
Visually inspect the burner tiles for proper combustion - clean tiles as above
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if required
If a crack is visible in any tile, the tile must be replaced
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Indication of back firing:
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WARNING: If heater backfires during operation, it must be turned off immediately.
Contact a qualified gas service technician for heater repair before putting the
heater back into operation.
Loud ignition noise, followed by distinct hissing sound.
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Little or no visible burning on the ceramic tile surface.
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Combustion is taking place inside the burner body.
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Cause & remedy of back firing: Service repair required by qualified gas ser-
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vice technician
Improper gas pressure entering the venturi tube: Check gas pressure - Refer
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to Table 1 Page 4.
Broken/cracked ceramic tile and/or gasket: Replace damaged component.
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Page 15
sportSchwank Manual
IM080731
RD: APR 2019
RL: 01B
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