Karcher Shark HDS 2.0/10 Ed Cage Operator'S Manual Download

Page: 10 / 28

9.800-191.0 • Rev. 10/09

OPERATOR’S MANUAL

PRESSURE WASHER

PREvENTATIvE MAINTENANCE AND SERvICE

the soot on the coil must be washed off after coil has
been removed using the following steps:
1. Remove the tank head assembly by lifting the tank

head off.

2. Remove the two pipe nipples and associated fit-

tings.

3. Lift the coil out of the outer wrap.

CAUTION: the coil weighs about 80 lbs. Use proper
lifting techniques.

4. Clean, repair and replace the coil by reversing the

above steps.

Coil Reinstallation

Reinstall by reversing the above steps 4 through 1.

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 the 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 Kerosene No. 1 or No. 2 Heating
Fuel (ASTM D306) or diesel 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.

Ignition Circuit:

Periodically inspect wires, spring contact and elec-
trodes for condition, security and proper spacing.

for

transformer test (CAUTION 10,000 vOLTS) use defect
free insulated screwdriver and keep fingers off blade!
Lay blade across one contact: OK if arc will span 1/2"
between end of blade and other contact (see following
illustration).

Electrode Setting: beckett

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.

fuel Control System:

The  pressure  washer  utilizes  a  fuel  solenoid  valve
located on the fuel pump to control flow of fuel to the
combustion  chamber.  This  solenoid  is  activated  by  a
pressure switch located on the unloader valve. When
an operator releases the trigger on the spray gun, the
pressure drops, allowing the pressure switch to activate
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 situation, thereby eliminating high and low
water  temperatures,  and  combustion  smoke  normally
associated  with  machines  incorporating  a  spray  gun.
Periodic inspection is recommended to insure that the
fuel solenoid valve functions properly. This can be done
by operating the machine 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 with a
screwdriver (located on the fuel pump) clockwise to
increase, counterclockwise to decrease. Do not exceed
200 PSI.

Air Adjustment

Machines  are  preset  and  performance  tested  at  the
factory — elevation 100' above sea level. A one time
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. 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  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.
To  adjust:  Start  the  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 appears from burner exhaust vent. Note
air band position. Next slowly open the air shutter until
white smoke just starts to appear. Turn air shutter half-
way back to the black smoke position previously noted.
Tighten locking screws.