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  9.801-509.0 - C  •  Karcher Operator's Manual

21

 PRESSURE 

W

ASHER  

T

roub

leshooting  Guide

TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

WATER 
TEMPERATURE 
TOO HOT

Incoming water to machine warm or hot

Lower incoming water temperature.

Gas pressure too high

See specifi cations for proper gas pressure.

Detergent line sucking air

Tighten all clamps. Check detergent lines 
for holes.

Defective high limit switch

Replace.

Incorrect burner nozzle size

See serial plate.

Insuffi cient water supplied

Check water GPM to machine.

Restricted water fl ow

Check nozzle for obstruction, proper size.

PRESENCE OF 
WATER IN OIL

Oil seal worn

Check and replace if necessary.

High humidity in air

Check and change oil twice as often.

WATER 
DRIPPING 
FROM UNDER 
PUMP

Piston packing worn

Check and replace if necessary.

O-Ring plunger retainer worn

Check and replace if necessary.

DETERGENT 
NOT 
DRAWING

Air leak  Tighten all clamps.

Check detergent lines for holes.

Detergent metering valve packing not tight 
or packing worn

Tighten nut. Replace valve or packing.

Filter screen on detergent suction hose 
plugged

Clean or replace.

Dried up detergent plugging metering valve

Disassemble and clean thoroughly.

High viscosity of detergent

Dilute detergent to specifi cations.

Restriction behind fl oat tank screen 
removed

Install restriction.

Hole in detergent line(s)

Repair hole.

Strainer basket plugged

Remove and clean.

Connections on selector valve loose

Put tefl on tape on all pipe connections.

Detergent solenoid not opening 
(where applicable)

Check fl ow switch, replace detergent 
solenoid.

PUMP 
RUNNING 
NORMALLY 
BUT PRESSURE 
LOW ON 
INSTALLATION

Pump sucking air

Check water supply and possibility of air.

Valves sticking

Check and clean or replace if necessary.

Unloader valve seat faulty

Check and replace if necessary.

Nozzle incorrectly sized

Check and replace if necessary 
(See serial plate for proper size).

Worn piston packing

Check and replace if necessary.

FLUCTUATING 
PRESSURE

Valves worn

Check and replace if necessary.

Blockage in valve

Check and replace if necessary.

Pump sucking air

Check water supply and air seepage at 
joints in suction line.

Worn piston packing

Check and replace if necessary.

PUMP 
NOISY

Air in suction line

Check water supply and connections on 
suction line.

Broken or weak inlet or discharge valve 
springs

Check and replace if necessary.

Excessive matter in valves

Check and clean if necessary.

Worn bearings

Check and replace if necessary.

Содержание HDS3.5/20

Страница 1: ...DES LUN ETTE S DE SEC URIT E DOIV ENT ETR E POR TEES lorsq ue vous oper ez cet appa reil RISK OF ASP HYX IATI ON Use only in well vent i lated area RIES GO DE ASF IXIA Use el prod ucto en un area de...

Страница 2: ...is on it means the overload is tripped Reset overload Pilot Light When the light is on it means there is power to the pilot control If there is no light see troubleshooting guide Voltage When the lig...

Страница 3: ...9 30 5 0 23 4 8 30 8 Installation HDS 6 3 32 8 0 32 9 5 30 19 Installation 10 16 Assembly Instructions 17 Operating Instructions 18 Applying Detergent General Washing Techniques 19 Shutting Down Clea...

Страница 4: ...ly familiar with the controls 3 Stay alert watch what you are doing 4 Use only your hand to push in or turn the gas control knob Never use a tool If the knob will not push in or turn by hand don t try...

Страница 5: ...discharge stream at people or severe injury or death will result WARNING PROTECT FROM FREEZING WARNING Protect machine from freezing 13 To keep machine in best operating conditions it is importantyou...

Страница 6: ...WARNING If connection is made to potable water supply a back flow device must be provided 27 Exhaust gases should not be vented into a wall a ceiling or a concealed space of a building A draft diverte...

Страница 7: ...DOR ES CAL IFIC ADO S LIRE LE MAN UEL DE L OP ERA TEU R AVA NT UTIL ISAT ION CET APP ARE IL DOIT ETR E UTIL ISE PAR DES OPE RA TEU RS QUA LIFIE S RIS K OF INJU RY PRO TEC TIVE EYE WEA R AND CLO THIN G...

Страница 8: ...9 50 Dia Customer Supplied Draft Diverter 24 00 24 87 4 00 High Pressure Out 22mm Screw Connection 48 54 36 68 24 50 24 00 12 00 49 00 Water In 3 4 GHF 21 30 20 61 20 61 Exhaust Out 10 Dia NOTE Draft...

Страница 9: ...side Floor Mounting Dimensions 19 50 Dia Customer Supplied Draft Diverter Control Panel 61 00 17 33 34 79 17 36 26 18 3 64 High Pressure Out 22mm Screw Connection 31 77 64 00 26 91 26 91 Water In 3 4...

Страница 10: ...s recommended that a partition be made be tween the wash area and machine to prevent direct spray from the spray gun from coming in contact with the machine Excess moisture reaching the power unit or...

Страница 11: ...roved by the Uniform Building Code Vents penetrating ceilings or walls should be double wall approved appliance vents and should be one to INSTALLATION LP Gas Liquid petroleum gas or propane LP gas is...

Страница 12: ...e roof power venting is recommended to help eliminate exhaust restriction of this natural draft machine This draft inducer power vent must be installed by a li censed contractor who can calculate size...

Страница 13: ...fluenced by the heat created inside the coil the design of the coil and flue and the length and diameter of the exhaust stack The table below shows data included in the operator s manual for flue and...

Страница 14: ...is 4 2 wc in For an installation at 3500 feet reduce this pressure by 16 by setting the manifold pressure to 4 2 84 3 5 wc in This adjustment should only be made by a properly trained service technici...

Страница 15: ...ollow instructions carefully when installing or servicing machine Failure to do so may result in damage to property or personal injury 1 Installation or servicing of gas appliances and controls must o...

Страница 16: ...y for the BTU rating of the burner Is incoming gas supply pressure between 6 14 water column inches or 1 2 PSIG Has the proper gas regulator been installed for pressure and volume Have you installed t...

Страница 17: ...will result Safety Latch Spray Gun High Pressure Hose 98015080 7 STEP 3 Connect garden hose to the cold water source Cold Water Source Garden Hose 98015080 10 STEP 6 Attach the Power Nozzle to end of...

Страница 18: ...rgent Valve STEP 4 To apply detergent open the detergent valve counterclock wise making sure that the deter gent pick up tube is in the detergent solution and not sucking air 98016360 17 NOTE High pre...

Страница 19: ...his thermal device prevents internal damage to the pump CLEANING TIPS Pre rinse cleaning surface with fresh water Place detergent suction tube directly into cleaning solu tion and apply to surface For...

Страница 20: ...du syst me F Coupez l eau W ARNIN G PRE CAU CION AVE RTIS SEM ENT SK AL E NE BY ORS LEA EL MANUA L OPERA CION ANTES DE USARS E ESTE EQUIPO DEBE SER USADO SOLAM ENTE POR OPERA DORES CALIFIC ADOS LIRE L...

Страница 21: ...ugging metering valve Disassemble and clean thoroughly High viscosity of detergent Dilute detergent to specifications Restriction behind float tank screen removed Install restriction Hole in detergent...

Страница 22: ...all repair kit when needed Worn packing in pump Install new packing kit Fouled or dirty inlet or discharge valves in pump Clean inlet and discharge valve Worn inlet or discharge valves Replace with va...

Страница 23: ...scale 1 Be sure main gas valve gas cock or selector arm is turned on 2 With gas on and system sparking probe terminals PV and 24V GND If pilot gas does not flow with 24 volts at these terminals repla...

Страница 24: ...switch on With the pilot burning and the flame on the ignitor sensor rod the main burner should turn on If it does not replace the ignition control unit SHORT CYCLING OF MAIN BURNER MAIN BURNER TURNS...

Страница 25: ...ump needs repairing CAUTION When using this procedure to test components keep the spray gun open at all times High Limit Hot Water Thermostat For safety each machine is equipped with a high limit cont...

Страница 26: ...installed between pro pane bottle and gas valve Propane Cylinder Capacity An important consideration with propane systems is the capacity of the supply cylinder relative to the needs of the burner The...

Страница 27: ...through the coil by whatever means are available for the particular system the water heater is used on To Adjust Pressure Regulator Adjustment of the pressure regulator is not normally necessary since...

Страница 28: ...Lbs per Gal Liquid 4 23 4 87 BTU per Cu Ft Vapor 2 563 3 39 BTU per Gal Liquid 91 547 102 032 BTU per Lb Liquid 21 591 21 221 Cu Ft per Lb Liquid 8 607 6 53 Cu Ft per Gal Liquid 36 45 31 8 Octane Numb...

Страница 29: ...essure gauge At the lower levels it is expressed in water column inches i e 11 w c i Higher pressures are expressed in terms of the force exerted against a square inch of area for example 125 lbs per...

Страница 30: ...e life of your pressure washer Perform maintenance more often under severe conditions MAINTENANCE SCHEDULE Replace Fuel Lines Annually Pump Oil Inspect Daily inspect the oil level Change After first 5...

Страница 31: ......

Страница 32: ...HDS 9 801 509 0 Printed in U S A...

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