John Deere AC-3500GSH User Manual

John Deere Operator's Manual

OPERATING INSTRUCTIONS

HOT WATER OPERATION:

1. Follow the steps outlined for "START-UP/COLD WATER OPERATION".
2. Move the Burner Switch to the ON position. On initial start-up, water will

begin turning hot in approximately 20 seconds and will reach maximum

temperature in approximately 2-1/2 minutes, provided the trigger remains

squeezed. The burner will stop firing when the trigger is released.

NOTE: While spraying, it is normal for the burner to fire intermittently. The

high-limit switch will cause combustion to cease when the temperature

of the discharged water exceeds the maximum temperature setting of

the switch. Combustion will begin again when the temperature drops

below the minimum setting.

At this point, the unit is operating as a hot water pressure washer. Be certain to

be extremely cautious when adjusting the pressure and controlling the trigger

gun/dual lance assembly to avoid the possibility of burns.

CLEANING WITH DETERGENTS UNDER LOW PRESSURE:

NOTE: This feature is designed for use with mild detergents only. Since the

cleaning solution travels through the heat exchanger coil, DO NOT use

corrosives as they will cause extensive damage as well as pose a

considerable safety hazard.

1. Refer to "Risk of Bodily Injury/Detergents" pg. 7. Be certain to wear protective

safety attire as stated on pg. 12.

2. Prepare detergent solution according to label directions. (Never pump acids,

alkalines, abrasive fluids or solvents through the unit. Due to the unknown

and often corrosives characteristics of many detergents commonly used in

the pressure washer cleaning industry, it is recommended to use only John

Deere detergents with this unit.)

3. Fully immerse the strainer end of the clear vinyl detergent hose into the

detergent solution.

4. Adjust the amount of detergent desired by locating the adjustment knob at

the end of the clear vinyl hose. Turn the knob completely counterclockwise to

set at maximum siphon rate. Be certain the adjustable grip on the dual lance

is turned completely clockwise for low pressure detergent operation.

NOTE: This injection system is designed to apply detergents under low pressure

only. It will not allow detergent solutions to be introduced into the system

unless the dual lance is set in the low pressure mode.

5. To apply solution; unlock the trigger gun and squeeze the trigger. In a few

moments a detergent/water mixture will exit the nozzle. Start spraying

the lower portion of the surface being cleaned and move up, using long

overlapping strokes. Applying from the bottom up helps avoid streaking.

Allow to soak briefly. Avoid working on hot surfaces or in direct sunlight to

minimize the chances of the detergent drying, which may result in damaging

surfaces. Be certain to clean a small section at a time.

6. To rinse; lock the trigger gun in the "OFF" position, rotate the adjustable

grip on the dual lance counterclockwise for high pressure. Unlock the

trigger gun and spray. It will take about 30 seconds to purge all detergent

from the line. For best rinsing results, start at the top and work down.

7. Siphon a gallon of water through the low pressure detergent injection system

after each use. This prevents the possibility of corrosion or detergent residue

causing mechanical problems during the next use.

SHUT-DOWN:

1. Move the burner switch to the OFF position.
2. Squeeze the trigger and discharge the water for a period of three minutes

to cool the heat exchanger and high pressure hose. (Insufficient cool down

period of the high pressure hose will cause excessive wear and eventual

rupturing of the hose.)

DO NOT close the choke to stop the engine. Backfire or engine damage

may occur.

4.  Move the engine On/Off Switch to the "off" position.
5.  Close the engine fuel shut-off valve.
6.  Turn off the water supply and trigger the gun momentarily to relieve trapped

pressure.

7. Disconnect and store hoses. Store unit in a non-freezing environment.

WARNING

RISK OF BURN!

THE WATER TEMPERATURE

COULD BECOME VERY HOT

DURING HOT WATER OPER-

ATION. BE CAUTIOUS WHEN

ADJUSTING PRESSURE OR

CONTROLLING THE TRIGGER

GUN/DUAL LANCE ASSEMBLY.