17
Maintenance
To adjust:
start machine and turn burner ON. Loosen
two locking screws found on the air band (refer to illus-
tration) and close openings until black smoke appears
from burner exhaust vent. Note air band position. Next,
slowly open the air band until white smoke just starts to
appear. Turn air band halfway back to the black smoke
position previously noted. Tighten locking screws.
Coil Removal HS-3000
Removal of the coil, because of freeze breakage,
thermal expansion or to clean soot from it, can be done
quickly and easily.
1. Disconnect hose from inlet side of the coil.
2. Disconnect electrical connection to the
thermostat.
3. Remove rupture disk and associated fittings.
4. Remove the 3-3/8" bolts from each side of coil and
tank assembly (these bolts are used to fasten
handles to chassis).
5. Remove burner assembly from combustion
chamber.
6. Disconnect 1/2" pipe nipples and tee fittings from
inlet and discharge side of coil.
7. Remove top tank wrap exposing insulation and
coil. Bend back insulation tabs in exhaust stack.
Then fold back insulation.
8. Remove bolts from underneath that hold down coil
to bottom wrap.
9. Remove coil.
10. Replace or repair any insulation found to be torn or
broken.
11. Reinstall new or cleaned coil reversing Steps 9
through 1.
NOTE:
Before step 6, lift coil and tank assembly onto
some type of exposed support for ease of removing
inlet and discharge fittings.
Landa HS Operator’s Manual 8.913-943.0 - P
