Hot Water Operation; Cleaning With Detergents; Shutdown - Mi-T-M HSD Serie Manual Del Usuario

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 temperature setting of the switch.
Combustion will begin again when the water 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/lance assembly to avoid the possibility of burns.
CLEANING WITH DETERGENTS-HIGH PRESSURE:
NOTE: This feature is designed for use with mild detergents only. Since the
cleaning solution travels through the pump and 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" warnings, pg. 7. Be certain to wear protective
safety attire as stated on pg. 10.
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 corrosive characteristics of many detergents commonly used
in the pressure washer cleaning industry, it is recommended to use only
Mi-T-M 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 turning the detergent metering
valve completely counterclockwise to set at maximum siphon rate.
NOTE: Selection of low pressure detergent application can be achieved by
turning the adjustable grip on the Dual Lance clockwise as shown
in the figure below. Once the pressure is low enough, the detergent
injector on the pressure washer will draw detergent into the system. A
water/detergent mixture exits from both the spray nozzle and detergent
nozzle.
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 apply cleaning solution to a small section at a
time.
6. To rinse: lock the trigger gun in the OFF position. Turn the detergent
metering valve to the OFF position. 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 detergent injection system after each
use. This prevents the possibility of corrosion or detergent residue causing
mechanical problems during the next use.

SHUTDOWN:

1. Move the burner switch to the OFF position.
2. Squeeze the trigger and discharge the water for 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.)
3. On the gasoline engine models, 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. Turn off the water supply and trigger the gun momentarily to relieve trapped
pressure.
6. Disconnect the high pressure hose, gun, and lance. Drain and wipe the
unit clean. Store in a non-freezing environment.
HSD-SERIES Operator's Manual
WARNING
RISK OF BURN!
THE WATER TEMPERATURE
COULD BECOME VERY HOT
DURING HOT WATER OPERA-
TION. BE CAUTIOUS WHEN
ADJUSTING PRESSURE OR
CONTROLLING THE TRIGGER
GUN/LANCE ASSEMBLY.
DETERGENT METERING VALVE
ADJUSTABLE GRIP
15