Shark HPB-4020, HPB-2011, HPB-3520, HPB-3530 manual Preventative Maintenance, Maintenance and Service

WASHER

PREVENTATIVE MAINTENANCE

OPERATOR’S MANUAL PRESSURE

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1.Use clean fuel — kerosene, No. 1 home heating fuel or diesel fuel. Clean or replace fuel filter every 100 hours of operation. Avoid water contaminated fuel as it will seize up the fuel pump. De-soot coils monthly. Use an additive if diesel is being used.

2.Check to see that the attached pressure washer water pump is properly lubricated.

3.Follow winterizing instructions to prevent freeze damage to pump and coils.

4.Always neutralize and flush detergent from sys- tem after use.

5.If water is known to be high in mineral content, use a water softener on your water system, or de-scale as needed.

6.Do not allow acidic, caustic or abrasive fluids to be pumped through the system.

7.Always use high grade quality cleaning products.

8.Never run attached pressure washer pump dry for extended periods of time.

9.If machine is operated with smoky or eye burning exhaust, coils will soot up, preventing water from reaching maximum operating temperature. (See section on Maintenance and Service).

10.Never allow water to be sprayed on or near the motor or burner assembly or any electrical com- ponent.

11.Delime coils as per instructions.

It is advisable, periodically, to visually inspect the burner. Check air inlet to make sure it is not clogged or blocked. Wipe off any oil spills and keep equipment clean and dry.

The areas around the pressure washer should be kept clean and free of combustible materials, gasoline and other flammable vapors and liquids.

The flow of ventilating air to the burner must not be blocked or obstructed in any manner.

MAINTENANCE AND SERVICE

Unloader Valves:

Unloader valves trap pressure in the line when a shut- off spray gun is closed. Machines with unloader valves are preset and tested at the factory before shipping. Occasional adjustment of the unloader may be neces- sary to maintain correct pressure.

Winterizing Procedure:

Damage due to freezing is not covered by warranty. Adhere to the following cold weather procedures when- ever the washer must be stored or operated outdoors under freezing conditions.

During winter months, when temperatures drop below 32°F, protecting your machine against freezing is nec- essary. Store the machine in a heated room. If this is not possible then mix a 50/50 solution of anti-freeze/ water or windshield washer fluid with water in a 5 gal- lon bucket. Place a short section of garden hose into the bucket and connect it to the machine. Elevate the bucket and turn the pump on to siphon the anti-freeze through the machine. If compressed air is available, an air fitting can be screwed into the inlet connector and by injecting compressed air, all water will be blown out of the system.

If you have an optional float tank, pour the antifreeze into this tank and run machine until antifreeze exits dis- charge nipple.

High Limit Hot Water Thermostat:

For safety, each machine is equipped with a high limit control switch. In the event the temperature of the wa- ter should exceed its operating temperature, the high limit control will turn the burner off until the water cools.

Pumps:

Use only SAE 30 weight non-detergent oil. Change oil after first 50 hours of use. Thereafter, change oil every three months or at 500 hour intervals. Oil level should be checked by using the dipstick found on the top of the pump or by the red dot visible through the oil gauge window. Oil should be maintained at that level.

Cleaning of Coils:

In alkaline water areas, lime deposits can accumulate rapidly inside the coil pipes. This growth is increased by the extreme heat build up in the coil. The best pre- vention for liming conditions is to use high quality clean- ing detergents. In areas where alkaline water is an ex- treme problem, periodic use of deliming powder will remove lime and other deposits before coil becomes plugged.

Deliming Coils With A Pressure Washer:

Periodic flushing of coils is recommended.

Step 1 Fill a 5 gallon bucket with 4 gallons of water, then add 1 lb. of deliming powder. Mix thor- oughly.

Step 2 Remove the high pressure nozzle from the pressure wand and put the wand into the bucket. Secure the trigger on the spray gun into the open position.

Step 3 Attach a short section (3-5 ft.) of garden hose to the attached pressure washer to siphon so- lution from the elevated bucket. Start up pres- sure washer, allowing solution to be pumped

97-6068, 97-6131 • REV. 3/06