Wacker Neuson HI 770XHD, Руководство оператора

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HI 770XHD Maintenance
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7.7 Inspecting the Heat Exchanger
Introduction The heat exchanger consists of the combustion chamber and an attached series of
metal tubes. As intake air flows over the hot combustion chamber and tubes, it
collects heat. The heated intake air is then blown out of the supply ducts.
Reasons for
inspection A cracked or damaged heat exchanger is hazardous! Poisonous carbon monoxide
gas can escape from the heat exchanger and enter the clean air stream.
Combustible gases may also ignite the surrounding insulation material, causing a
fire.
To ensure a safe operating condition, the heat exchanger must be inspected
regularly for damage.
When Inspect the heat exchanger once a year as part of the regularly scheduled
maintenance program.
Inspect the heat exchanger more often if any of the following conditions exist:
„
The machine has been transported or towed over extremely rough roads or ter-
rain.
„
The machine / towing vehicle has been involved in an accident.
„
The machine has been dropped.
„
There is visible damage to the heater shell or trailer components.
„
The burner has been improperly adjusted and is over-firing.
„
There is doubt about whether regularly scheduled maintenance has been per-
formed.
„
The safety systems have been bypassed by improper or modified wiring.
NOTICE: If the machine wiring has been altered, correct the wiring before operat-
ing the machine.
Requirements
„
Power disconnected from the machine.
„
Machine cool. Do not inspect a hot heat exchanger!
„
Crane or hoist and appropriate lifting gear
„
Shop light
„
Inspection mirror
„
High-temperature, RTV-type silicone
„
Hand protection
This procedure continues on the next page.
DANGER
Asphyxiation hazard. Gases escaping from a cracked or damaged heat exchanger
contain carbon monoxide (CO). This is a poison you cannot see or smell. CO can
kill you in minutes!
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Do not operate the machine if it has a cracked or damaged heat exchanger.