Landa SDHW Series, Руководство оператора

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11
Maintenance
Removal of Soot from Heating Coil
In the heating process, fuel residue in the form of soot
deposits, may develop between the heating coil pipes
and may block air flow which affects burner combus -
tion. When soot has been detected on visual observa -
tion, the soot on the coil must be washed off after
following the coil removal steps (See Coil Removal
page).
Rupture Disk
If pressure from pump or thermal expansion should
exceed safe limits, the rupture disk will burst allowing
high pressure to be discharged through hose to ground.
When disk ruptures it will need to be replaced.he
Rupture Disk should be replaced every two years.
Fuel
Use clean diesel fuel that is not contaminated with
water and debris. Replace fuel filter and drain tank
every 100 hours of operation.
NEVER
use gasoline in your burner or diesel fuel tank.
Gasoline is more combustible than fuel oil and could
result in a serious explosion.
NEVER
use crankcase or
waste oil. Fuel burner and diesel engine malfunction
could result from contamination in fuel.
All combustion system designs are geared toward the
use of commercial grade diesel fuels. As such, use of
fuels other than those designated "DF", i.e. DF2 (No. 2
Diesel Fuel), will result in degradation of performance
and/or reduction in component life. It is understood that
applications in certain situations require the use of fuels
other than No. 2 diesel fuel. Below is a list of various
fuels and comments pertaining to each.
Fuel Grade/Type Comments
No. 2 Diesel Fuel (DF2) Recommended fuel type
for normal ambient operation.
No. 1 Diesel Fuel (DF1) Recommended fuel type
for cold weather operation in ambients which
would result in DF2"waxing" No degradation in
performance or engine/component life.
No. 1 Diesel Fuel (DF1) Not recommended. JP 4
should be used only in emergency situations.
JP 4 severely reduces engine life and potential
power due to the lack of lubricity as compared
to DF2.
JP 8 Turbine Fuel 5-12% reduction in power and
up to 30% reduction in fuel system component
and upper cylinder life.
JP 5 Turbine Fuel Refer to JP 8 DF A Arctic
Acceptable fuel for use in subzero ambients
only.
Component failure that can be directly attributed to the
use of fuels other than diesel fuel (DF2/DF1) cannot
Fuel Control System
This machine utilizes a fuel solenoid valve located on
the fuel pump to control the flow of fuel to the combus -
tion chamber. The solenoid, which is normally closed, is
activated by a flow switch when water is flowing
through it. When an operator releases the trigger on the
spray gun, the flow of water through the flow switch
stops, turning off the electrical current to the fuel
solenoid.
The solenoid then closes, shutting off the supply of fuel
to the combustion chamber. Controlling the flow of fuel
in this way gives an instantaneous burn-or-no-burn situ -
ation, thereby eliminating high and low water tempera -
tures, and combustion smoke normally associated with
machines incorporating a shut-off spray gun. Periodic
inspection to insure that the fuel solenoid valve
functions properly is recommended. This can be done
by operating the machine and checking to see that
when the spray gun is in the off position, the burner is
not firing.
Landa SDHW6-35824 E/M Operator’s Manual 8.913-958.0 - AC