LANDA PGDC • 8.916-596.0 • REV. 5/13
OPERA
TOR’S MANU
AL
PRESSURE
W
ASHER
16
maINTeNaNCe & SeRVICe
electrode Setting
burner Nozzle
Keep the tip free of surface deposits by wiping it with
a clean, solvent-saturated cloth, being careful not to
plug or enlarge the nozzle. For maximum efficiency,
replace the nozzle each season.
beckett burner air adjustment
Machines are preset and performance tested at the
factory - elevation 100’. A one-time initial correction for
your location will pay off in economy, performance, 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 certain that kerosene
or No. 1 home heating fuel is being used. Next, check the
air adjustment on the burner.
To adjust:
Start machine and turn burner ON. Loosen
two locking screws found in the air shutter openings (refer
to illustration) and close air shutter until black smoke ap-
pears from burner exhaust vent. Note air band position.
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.
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 after following
the coil removal steps (See Coil Removal on page 13).
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.
fuel
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every
100 hours of operation. Use No. 1 or No. 2 Heating
Oil (ASTM D306) only.
NeVeR
use gasoline in your
burner tank. Gasoline is more combustible than fuel
oil and could result in a serious explosion.
NeVeR
use crankcase or waste oil in your burner. Fuel unit
malfunction could result from contamination.
fuel Control System
These machines utilize a fuel solenoid valve located
on the fuel pump to control the flow of fuel to the
combustion chamber. This solenoid valve, 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 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 allows for an instantaneous
burn or no burn situation, thereby eliminating high and
low water temperatures, and combustion smoke nor-
mally associated with units incorporating a spray gun.
CAUTION: Periodic inspection is recommended
to insure that the fuel solenoid valve functions
properly. This can be done by operating the ma-
chine and checking to see that when the trigger
on the spray gun is in the off position, the burner
is not firing.
fuel pressure adjustment
To adjust fuel pressure, turn the adjusting screw
clockwise to increase, counterclockwise to decrease.
Do not exceed 200 psi.
NOTe:
When changing fuel pump, a bypass plug must
be installed in return port or fuel pump will not prime.
8916596-9
5/32"
electrode
1/4"
5/32"
Nozzle
air band
air Shutter
air band
locking Screw
air Shutter
locking Screws