Air Adjustment; Removal Of Soot And Heating Coil; Coil Reinstallation - Landa HOT2-1100 Operator's Manual

HOT SERIES PRESSURE WASHER

Air Adjustment

Machines are preset and performance tested at the fac-
tory - elevation 100' above sea level. A one-time initial
correction for your location will pay off in economy, per-
formance, and extended service life. If a smoky or eye-
burning exhaust is being emitted from the stack, two
things should be checked. First, check the fuel to be cer-
tain that kerosene or No. 1 home heating fuel is being
used. Next, check the air adjustment on the burner. An
oily, black, smoky fire indicates a lack of air and the air
band should be moved to allow the air to flow through
the burner. Sharp eye-burning white fumes indicate too
much air flowing through the combustion chamber. The
air band should be moved to allow less air to flow through
the burner.
Fuel Pump
Air
Adjustment
Screw
To adjust: Start machine and turn burner ON. Loosen
two locking screws found in the air shutter openings (re-
fer to illustration) and close air shutter until black smoke
appears from burner exhaust vent. Note air band posi-
tion. Next, slowly open the air shutter until white smoke
just starts to appear. Turn air shutter halfway back to the
black smoke position previously noted. Tighten locking
screws.
If the desired position cannot be obtained using only the
air shutter, lock the air shutter in as close a position as
can be obtained, then repeat the above procedure on
the air band setting.
Initial Air Adjustments: Allow sufficient air to obtain a
clean burning flame by loosening the lock screws and
moving the air shutter and if necessary the bulk air band.
Reduce the air supply until the flame tips appear slightly
smoky, then increase the air just enough to cause the
flame tips to appear absolutely clean.

Removal of Soot and Heating Coil

In the heating process, fuel residue in the form of soot
deposits may develop between the heating coil pipe and
block air flow which will affect burner combustion. When
soot has been detected on visual observation, the soot
on the coil must be washed off. Follow these steps to
remove the coil.
1. Disconnect hose from pump to inlet side of the coil.
2. Disconnect electrical connection to the thermostat.
3. Remove quick coupler from inlet and discharge side
4. Remove burner assembly from combustion cham-
5. Remove the 3-3/8" bolts from each side of coil and
Air Band
6. Disconnect 1/2" pipe nipples from inlet and discharge
7. Remove top tank wrap exposing insulation and coil
8. Remove bolts that hold down coil to bottom wrap.
9. Remove coil.
10. Replace or repair any insulation found to be torn or

Coil Reinstallation

Reinstall new or cleaned coil by reversing Steps 9 through
1 above.
LANDA HOT • 96-626 • REV. 2/04
OPERATOR'S MANUAL
of coil.
ber.
tank assembly (these bolts are used to fasten tank
and handles to chassis).
side of coil.
and fold back insulation.
broken.
11