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OPERATOR'S MANUAL FOR
HSP-SERIES
HOT WATER
PRESSURE WASHERS
(UTILIZES EMF SYSTEM PATENT #5,954,494)
®
C US
201473
CAUTION
RISK OF INJURY!
READ MANUAL BEFORE OPERATING!
This manual is an important part of the pressure washer and must remain with the unit when you sell or rent it!
©Copyright 2006, Mi-T-M® Corporation®
Mi-T-M ® HSP-SERIES Operator's Manual
#37-0449-E/S-042707
table of contents
introduction ............................................................................................................................. 3 important safety warnings.............................................................................................4-7
RISK OF EXPLOSION OR FIRE ........................................................................................ 4
RISK OF ASPHYXIATION .................................................................................................. 5
RISK OF INJECTION OR SEVERE CUTTING INJURY ..................................................... 5
RISK OF ELECTROCUTION OR ELECTRICAL SHOCK ................................................... 5
RISK OF BURNS ................................................................................................................ 6
RISK OF BURSTING .......................................................................................................... 6
RISK FROM MOVING PARTS ............................................................................................ 6
RISK OF BODILY INJURY .................................................................................................. 7
features ................................................................................................................................ 8-11 installation & preparation .........................................................................................12-14
ATTIRE .............................................................................................................................
SET-UP .............................................................................................................................
ENGINE/BURNER FUEL TANK ........................................................................................
ADJUSTABLE PRESSURE DUAL LANCE ....................................................................... 3
DUAL LANCE CONNECTION .......................................................................................... 3
` WATER SUPPLY ............................................................................................................... 3
UNLOADER ...................................................................................................................... 4
HEAT DUMP VALVE ......................................................................................................... 4
PRE-START INSPECTION PROCEDURES ..................................................................... 4
operating instructions ................................................................................................16-17
PRIMING THE PUMP ....................................................................................................... 6
START-UP/COLD WATER OPERATION .......................................................................... 6
HOT WATER OPERATION ............................................................................................... 7
CLEANING WITH DETERGENTS UNDER LOW PRESSURE ........................................ 7
SHUTDOWN ..................................................................................................................... 7
storage & maintenance .................................................................................................18-19
SPECIFIC MAINTENANCE ............................................................................................. 8
WINTERIZING .................................................................................................................. 9
troublesHooting .............................................................................................................20-21 maintenance cHart .............................................................................................................. 22 accessories ............................................................................................................................ 23 statement of warranty ..................................................................................................... 24 notes .......................................................................................................................................... 25
Mi-T-M ® HSP-SERIES Operator's Manual
introduction
Congratulations on the purchase of your new Mi-T-M HSP-Series hot water pressure washer featuring the patented
Electro Magnetic Firing (EMF) System! You can be assured your Mi-T-M hot water pressure washer was constructed and designed with quality and performance in mind. Each component has been rigorously tested to ensure the highest level of acceptance.
This operator's manual was compiled for your benefit. By reading and following the simple safety, installation, operation, maintenance and troubleshooting steps described in this manual, you will receive years of trouble free operation from your new Mi-T-M hot water pressure washer. The contents of this manual are based on the latest product information available at the time of publication. Mi-T-M reserves the right to make changes in price, color, materials, equipment, specifications or models at any time without notice.
! important !
these paragraphs are surrounded by a "safety alert boX". this box is used to designate and emphasize safety warnings that must be followed when operating this pressure washer. accompanying the safety warnings are "signal words" which designate the degree or level of hazard seriousness. the "signal words" used in this manual are as follows:
DANGER
: indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
: indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
: indicates a potentially hazardous situation which, if not avoided may result in minor or moderate injury.
the symbols set to the left of this paragraph are "safety alert symbols". these symbols are used to call attention to items or procedures that could be dangerous to you or other persons using this equipment.
always proVide a copy of tHis manual to anyone using tHis eQuipment. read all instructions before operating tHis pressure wasHer and especially point out tHe "safety warnings" to preVent tHe possibility of personal inJury to tHe operator.
Once the unit has been uncrated, immediately write in the serial number of your unit in the space provided below.
serial number_________________________________
Inspect for signs of obvious or concealed freight damage. If damage does exist, file a claim with the transportation company immediately. Be sure that all damaged parts are replaced and that the mechanical and electrical problems are corrected prior to operation of the unit. If you require service, contact Mi-T-M Customer Service.
CUSTOMER SERVICE
CALL OUR TOLL-FREE NUMBER for the Sales or Service Center nearest you!
800-553-9053
Please have the following information available for all service calls:
.
.
3.
Mi-T-M ® HSP-SERIES Operator's Manual
Model Number
Serial Number
Date and Place of Purchase
3
safety warnings
WARNING: When using this product, basic precautions should always be observed, including the following.
HaZard risK of
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
eXplosion or fire potential conseQuence
Serious injury or death may occur from normal sparks in the multiple ignition sources or engine/burner
preVention
Always operate pressure washer in a well ventilated area free of flammable vapors, combustible dust, gases or other combustible exhaust.
materials.
Do not store the pressure washer near an open flame or any equipment such as a stove, furnace, water heater, etc., which utilizes a pilot light or sparking device.
Serious injury or death may occur as a result of improper fueling.
Do not use this pressure washer to spray flammable material!
Do not smoke while filling fuel tanks.
Never fill the fuel tanks while the engine is running or hot. Allow the engine to cool two minutes before refueling.
Do not refuel indoors or in a poorly ventilated area.
Always refuel slowly to avoid the possibility of spilled fuel which may cause a risk of fire.
engine fuel tank:
If using a Gasoline Engine, refuel with gasoline only. Do not use diesel or fuel oil.
burner fuel tank
(Black): When refueling the Burner Fuel Tank, use No. 1 or No. 2 fuel oil/diesel or kerosene. Do not use gasoline.
Serious injury or death may occur from a ground fire caused by a muffler spark.
Do not operate the unit if gasoline or diesel fuel is spilled. Wipe the pressure washer clean and move it away from the spill. Avoid creating any ignition until the gasoline or diesel fuel has evaporated.
A spark arrester must be added to the muffler of this engine if it is to be used on any forest covered, brush covered or grass covered unimproved land. The arrester must be maintained in effective working order by the operator. In the state of California, the above is required by law. (Section 444 of the California
Public Resources Code.) Other states may have similar laws. Federal laws apply on
Federal lands.
Serious injury or death may occur if system safety's are not properly maintained.
This pressure washer has a Safety Relief device which should never be altered, modified, removed or made inoperative. If the device fails, replace immediately with only genuine manufacturer replacement part.
4 Mi-T-M ® HSP-SERIES Operator's Manual
safety warnings
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
HaZard risK of aspHyXiation potential conseQuence
Serious injury or death may occur from inhaling engine/burner exhaust or dangerous vapors. The engine exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive harm.
preVention
This pressure washer was designed for outdoor use only. Never operate this pressure washer in an enclosed area. Always make certain there is adequate ventilation (fresh outside air) for breathing and combustion. This will prevent the buildup of dangerous carbon monoxide gases. Beware of poorly ventilated areas, or areas with exhaust fans which can cause poor air exchange.
Follow all safety instructions provided with the materials you are spraying. Use of a respirator may be required when working with some materials. Do not use this pressure washer to dispense hazardous detergents.
risK of inJection or seVere cutting inJury
Serious injury or death could occur from high pressure spray penetrating the skin.
K eep clear of nozzle and spray! Never put your hand, fingers or body directly over the spray nozzle.
Never point the high pressure discharge spray at yourself or anyone else.
Always keep operating area clear of all persons.
DO NOT allow children to operate this unit.
SEEK EMERGENCY MEDICAL CARE if the spray appears to have penetrated the skin!
DO NOT TREAT AS A SIMPLE CUT!!
High pressure hoses and fuel lines should be inspected daily for signs of wear. If evidence of failure exists, promptly replace all suspect hoses and fuel lines to prevent the possibility of injury from the high pressure spray. If a hose or fitting is leaking, NEVER PLACE YOUR
HAND DIRECTLY ON THE LEAK.
NEVER operate the gun with the trigger wired in the open position. To prevent accidental discharge, the trigger gun should be securely locked when not in use.
Before removing the spray nozzle or servicing the unit, ALWAYS shut off the unit and trigger the gun to release trapped pressure. (Even after you shut off the unit, there is high pressure water left in the pump, hose and gun until you release it by triggering the gun.)
risK of electrocution or electrical sHocK
Serious injury or death may occur from contact with electricity.
DO NOT direct spray on or into electrical installations of any kind! This includes electrical outlets, light bulbs, fuse boxes, transformers, the unit itself, etc.
DO NOT allow metal components of the pressure washer to come in contact with live electrical components.
Mi-T-M ® HSP-SERIES Operator's Manual 5
safety warnings
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
HaZard risK of burns potential conseQuence
Serious injury may occur from touching the gasoline engine, muffler or heat exchanger. These areas can remain hot for some time after the pressure washer is shutdown.
preVention
Never allow any part of your body to contact the gasoline engine, muffler or heat exchanger.
risK of bursting
Serious injury may occur from a pressure washer malfunction or exploding accessories if incorrect system components, attachments or accessories are used.
Never make adjustments to the factory set pressures.
Never exceed manufacturers maximum allowable pressure rating of attachments.
Serious injury or death may occur if attempting to start the pressure washer when the pump is frozen.
Do not allow any hoses to make contact with the engine muffler, gasoline engine or heat exchanger to prevent the possibility of bursting.
Avoid dragging the hoses over abrasive surfaces such as cement.
Use only Mi-T-M recommended repair parts for your pressure washer.
In freezing temperatures, the unit must always be warm enough to ensure there is no ice formation in the pump. Do not start the pressure washer if it has been transported in an open or underheated vehicle without first allowing the pump to thaw.
risK from moVing parts
Serious injury may occur to the operator from moving parts on the pressure washer.
Before making any adjustments, be certain the engine is turned off and the ignition cable(s) is removed from the spark plug(s).
Turning the machinery over by hand during adjustment or cleaning might start the engine and machinery with it.
Do not operate the unit without all protective covers in place.
6 Mi-T-M ® HSP-SERIES Operator's Manual
safety warnings
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
HaZard risK of bodily inJury potential conseQuence
Serious injury or death may occur from detergents contacting the skin.
preVention
SEEK EMERGENCY MEDICAL CARE if you are using cleaning agents and the spray appears to have penetrated the skin! DO NOT TREAT AS
A SIMPLE CUT! Be prepared to tell a physician exactly what kind of detergents you were using by reading the Material Safety Data Sheet (MSDS) provided with your detergent.
Never use any solvents or highly corrosive detergents or acid type cleaners with this pressure washer.
Protective equipment such as rubber suits, gloves and respirators are advisable, especially when using cleaning detergents.
Serious injury can occur from loose debris being propelled at a high speed from the spray gun.
Keep all detergents out of the reach of children!
ALWAYS wear protective goggles when operating the unit to shield the eyes from flying debris and detergents.
DO NOT direct spray toward fragile materials such as glass for shattering could occur.
Injury may occur if the operator loses his balance caused by the thrust of water traveling through the spray nozzle.
Stay alert-watch what you are doing. Do not operate the unit when fatigued or under the influence of alcohol or drugs.
NEVER squeeze the trigger unless securely braced.
DO NOT overreach or stand on unstable support.
Wet surfaces can be slippery, wear protective foot gear and keep good footing and balance at all times.
NEVER trigger the gun while on a ladder or roof.
ALWAYS hold on firmly to the gun/lance assembly when starting and operating the unit.
Failure to do so can cause the lance to fall and whip dangerously.
Injury may occur from the pressure washer.
Know how to stop the pressure washer and bleed pressures quickly. Be thoroughly familiar with controls.
DO NOT leave pressurized unit unattended.
Shut off the pressure washer and release trapped pressure before leaving.
DO NOT operate the unit if you see any fuel, oil or water leaks from the machine. DO NOT resume operation until the unit has been inspected and repaired by a qualified service person.
NEVER run the engine with the governor disconnected or operate at excessive speeds.
Place unit in a clean, dry, flat area for servicing.
Before servicing the unit: turn the unit off, relieve allow the unit to cool down. Service in clean, dry, flat area. If applicable, block wheels to prevent unit from moving.
Do not move the unit by pulling on the hose.
!SAVE THESE INSTRUCTIONS!
Mi-T-M ® HSP-SERIES Operator's Manual 7
Hsp-small frame features
8 Mi-T-M ® HSP-SERIES Operator's Manual
features listing
. Pneumatic Wheels
. Protective Rollcage
3. Protective Cover
4. Decal-Warning: Hot Surfaces
5. Center Balanced Lifting Eye
6. Decal-Caution: Cool before Refueling
7. Decal-Warning: Allow to Cool
8. Convenient Push/Pull Handle
9. Water Inlet
0. Water Strainer
. High Pressure Pump
. Beltguard
3. Heat Exchanger Exhaust
4. Decal-Warning: Do Not Modify Plumbing
5. High Pressure Outlet
6. Coil Drain Assembly
7. Decal-Data Plate
8. Burner Fuel Tank
9. Decal-Caution: Risk of Fire
0. Decal-Warning/Caution/Operating
. Air Shutter Adjusting Arm
. Burner On/Off Switch
3. Engine Gasoline Tank
4. Wand Holder
5. High Pressure Hose
6. Trigger Safety Lock
7. Trigger Gun
8. Insulated Lance
9. Adjustable Pressure Dual Lance
30. Nozzle
specific unit information
BODY/FRAME: One piece, welded construction, full roll cage with solid steel axles, lifting hook and convenient push/pull handle, protective steel housing cover.
PORTABILITY: Four pneumatic tires for easy mobility.
FINISH: Powder Coated
HIGH PRESSURE HOSE: 3/8" x 50'
TRIGGER GUN ASSEMBLY: Trigger controlled, safety lockoff, insulated lance.
DUAL LANCE: Dual Lance, Insulated, w/adjustable pressure.
Mi-T-M ® HSP-SERIES Operator's Manual 9
Hsp-large frame features
0 Mi-T-M ® HSP-SERIES Operator's Manual
features listing
. Pneumatic Wheels
. Protective Rollcage
3. Protective Cover
4. Decal-Warning: Hot Surfaces
5. Center Balanced Lifting Eye
6. Decal-Caution: Cool before Refueling
7. Decal- Warning: Allow to Cool
8. Convenient Push/Pull Handle
9. Water Inlet
0. Water Strainer
. High Pressure Pump
. Beltguard
3. Heat Exchanger Exhaust
4. Decal-Warning: Do Not Modify Plumbing
5. High Pressure Outlet
6. Coil Drain Assembly
7. Decal-Data Plate
8. Burner Fuel Tank
9. Decal-Caution: Risk of Fire
0. Decal-Warning/Caution/Operating
. Air Shutter Adjusting Arm
. Burner On/Off Switch
3. Engine Gasoline Tank
4. Wand Holder
5. High Pressure Hose
6. Trigger Safety Lock
7. Trigger Gun
8. Insulated Lance
9. Adjustable Pressure Dual Lance
30. Nozzle
specific unit information
BODY/FRAME: One piece, welded construction, full roll cage with solid steel axles, lifting hook and convenient push/pull handle, protective steel housing cover.
PORTABILITY: Four pneumatic tires for easy mobility.
FINISH: Powder Coated
HIGH PRESSURE HOSE: 3/8" x 50'
TRIGGER GUN ASSEMBLY: Trigger controlled, safety lockoff, insulated lance.
DUAL LANCE: Dual Lance, Insulated, w/adjustable pressure.
Mi-T-M ® HSP-SERIES Operator's Manual
installation & preparation
attire:
Proper attire is essential to your safety. It is advised to utilize whatever means necessary to protect eyes, ears, and skin. Additional safety attire (such as respiratory mask) may be required when using detergent cleaning agents with this washer.
DANGER
risK of eXplosion or fire!
do not place unit in an area wHere flammable gas Vapors may be present. a sparK could cause an eXplosion or fire!
risK of unit bursting!
do not store/operate unit in freeZing enVironments!
set-up:
. This unit should only be placed on a level surface to ensure proper lubrication for the engine and water pump while operating. NEVER spray water directly on the unit.
. Do not use unit in an area: a. with insufficient ventilation.
b. where there is evidence of oil or gas leaks.
c. where flammable gas vapors may be present.
This unit has multiple ignition sources that could cause an explosion or fire.
3. Be certain to block the wheels to prevent the unit from moving while operating.
4. Do not allow the unit to be exposed to rain, snow or freezing temperatures.
If any part of the unit becomes frozen, excessive pressure may build up in the unit which could cause it to burst resulting in possible serious injury to the operator or bystanders.
5. Pump oil level should be checked before each use. Check the oil level indicator on the pump crankcase. Make certain the oil is in the center of the oil sight glass. If the level appears to be low, fill with Mi-T-M pump oil
#AW-4085-006.
WARNING
risK of aspHyXiation!
do not operate in an enclosed area. use tHis product only in well
Ventilated areas!
tHe eXHaust contains c a r b o n m o n o X i d e , a poisonous, odorless and inVisible gas. breatHing tHis gas can cause serious inJury, illness & possible deatH.
DANGER
risK of fire!
-do not smoKe wHile fueling!
-do not fill tHe fuel tanK wHile unit is running or
Hot. allow unit & engine to cool for two minutes before refueling.
-do not fill fuel tanK to point of oVerflowing. allow approXimately 1/4" of tanK space for fuel eXpansion.
engine/burner fuel tanK:
1. Review "Risk of Explosion or Fire" Warnings pg. 4, before fueling.
. Locate the Safety Decals on your unit and heed their warnings.
3.
gasoline engines:
When filling tank, gasoline fuel should be a minimum of 85 octane. DO NOT MIX OIL WITH GASOLINE. Gasoline fuel should be purchased in quantities that may be used within 30 days. Use of clean, fresh lead-free gasoline is recommended. Leaded gasoline may be used if lead-free is unavailable. DO NOT use gasoline containing methanol or alcohol.
burner fuel:
When filling tank, use No. 1 or No 2 fuel oil/diesel or kerosene.
4. Check the engine oil level before starting the engine. (See Engine manual.)
5. Refer to the Engine Manual supplied with this unit for proper engine adjustment procedures.
6.
review the engine manual accompanying this pressure washer for correct engine start-up and maintenance procedures.
WARNING
risK of eXplosion or fire!
always store fuel away from tHe wasHer wHile tHe unit is running or Hot.
Mi-T-M ® HSP-SERIES Operator's Manual
installation & preparation
dual lance assembly witH adJustable pressure:
This unit features a Dual Lance Assembly with adjustable pressure which allows the user to select a high or low pressure "fan" spray. Simply rotate the adjustable grip on the dual lance to achieve the desired pressure selection.
. Selection of high pressure can be achieved by turning the adjustable grip on the Dual Lance assembly
counterclockwise
as shown in the figure below.
. 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.
WARNING
risK of inJection causing seVere inJury!
-tHe trigger gun sHould always be locKed in tHe off position wHen not in use!
-neVer looK directly at tHe noZZle unless it is disconnected from tHe trigger gun/dual lance assembly!
dual lance connection:
. Be certain the trigger gun is locked in the "OFF" position.
. Connect the dual lance assembly to the trigger gun assembly at this time.
Be certain the connection is securely tightened.
water supply:
. Select a water supply hose which is a quality grade of garden hose measuring at least 3/4" ID and no longer than 50 feet.
Check the water inlet strainer to ensure it is clean and free of any obstructions. As a strainer becomes obstructed, it restricts proper flow of water to the pump. This can result in cavitations which will prematurely cause failure of pump packings. a. Unscrew the strainer cap from the unit. b. Remove the strainer screen and clean, or replace.
3. Connect one end of the water supply hose to the water inlet of the unit.
Connect the other end of the hose to your pressurized water supply.
NOTE: When connecting the water inlet to the water supply mains, local regulations of your water company must be observed. In some areas, the unit must not be connected directly to the public drinking water supply. This is to ensure there is no feedback of detergents into the water supply. (Direct connection is permitted if a backflow preventer is installed. Check with local authorities for approval.)
NOTE: If the mineral content of the water in your area is extremely high, the use of a water softener is recommended to prevent the possibility of excessive scale buildup inside the heat exchanger coil.
4. Follow the incoming water requirements listed below: a. Water pressure must be a minimum of 0 pounds per square inch
(PSI) and a maximum of 5 PSI. (A typical outdoor faucet will generally supply this PSI if turned completely "ON".) b. Incoming GPM must be approximately one gallon more than the outgoing GPM stated on the pressure washer nameplate. (You can check GPM by timing how long it takes to fill a 5 gallon container.) c. Incoming water temperature must not exceed 5°F. Excessive pump damage may result if the water temperature exceeds this acceptable level.
5. Never allow the unit to operate without the incoming water line attached and the water supply is completely turned on.
water inlet strainer
Mi-T-M ® HSP-SERIES Operator's Manual 3
CAUTION
risK of unit damage!
do not oVertigHten tHe unloader. breaKage could result in immediate loss of water pressure and costly repairs.
unloader:
installation & preparation
The HSP-0MGH/0MGV-MODELS: The unloader on these models is equipped with an adjustment knob so you can adjust the pressure. Should less pressure be required, simply turn the adjustment knob
counterclockwise
. To set back to maximum, turn the adjustment knob completely
clockwise
. DO NOT
OVERTIGHTEN.
The HSP-MGH/MGV-MODELS: The unloader on these models is not equipped with an adjustment knob. DO NOT adjust pressure on your own. The pressure has been preset at the factory and should only be adjusted by a trained Service
Representative.
tHermal relieVe ValVe:
To ensure the water temperature does not exceed acceptable levels, never allow the pressure washer to operate in the bypass mode (with the unit running and the trigger closed) for more than three minutes.
A thermal relieve valve has been added to this unit to protect the pump. It may begin to open and release water if the water temperature in the pump has exceeded
140° F. This will allow fresh, cool water to enter the system, therefore preventing premature failure of pump packings.
pre-start inspection procedures:
Before starting the unit, perform the following procedures:
. Check the oil level in the pump and engine.
. Inspect the water inlet strainer. Clean or replace if necessary. See "Water
Supply", #2, pg 13.
3. Check all hose connections to ensure they are securely tightened. See
"Water Supply", #3, pg. 13.
4. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak is found, DO NOT START UNIT! See "Risk of Explosion or Fire", pg. 4. Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact
Customer Service.
5. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak is found, DO NOT USE HOSE! Replace hose before starting unit. See "Risk of Injection" pg. 5. Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact Customer Service.
4
end of preparation instructions
Mi-T-M ® HSP-SERIES Operator's Manual
warning
tHe following pages contain operating and maintenance instructions.
do not attempt to operate tHis pressure wasHer until you HaVe read and understood all safety precautions and instructions listed in tHis manual.
incorrect operation of tHis unit can cause serious inJury!!
do not alter or modify tHis eQuipment in any manner!
Mi-T-M ® HSP-SERIES Operator's Manual 5
CAUTION
risK of unit damage.
be certain tHe Hose, gun
& dual lance assy. are not connected to tHe unit wHile priming tHe pump. priming allows mineral deposits to be released from tHe system wHicH would obstruct or damage tHe gun and noZZle assembly resulting in costly repairs.
DANGER
risK of inJection causing seVere inJury!
-Keep clear of noZZle! neVer place Hand or fingers in front of noZZle!
-do not direct discHarge stream at people or pets!
CAUTION
risK of damage.
do not allow spray pattern to remain on a fiXed area for an eXtended period of
6
operating instructions
priming tHe pump:
It is essential to prime the pump and flush the unit each time the water supply has been disconnected from the unit OR whenever the unit has set for any period of time. This unit has a steel coil which, after setting, will cause the water remaining in the coil from the previous usage to turn brown or black.
This contaminated water must be flushed from the system before start-up. This procedure should be performed
without
the high pressure hose, gun and dual lance assembly installed.
direct feed:
All units.
. Turn on the water supply.
2. Low pressure water will begin flowing from the water outlet. This allows the unit to prime and purge any air from the system. The unit is primed when water flow is uninterrupted by air.
3. Once the unit is primed, turn off the water supply and connect the high pressure discharge hose to the water outlet of the unit. (Note: The trigger gun and dual lance assembly should already be connected to the high pressure discharge hose at this time.)
4. Turn on the water supply.
suction feed:
HSP-MGH/MGV-MODELS only. These models have the ability to draw water from a static source and can provide a suction lift of 5' with a 3/4" inlet hose. We recommend the following for suction feed.
. Immerse a 3/4" x 5' long inlet hose into the water supply.
. Start the engine following the start up procedures given in the engine manual accompanying this unit.
3. Adjust the engine to a low speed until you see water exiting the water outlet.
NOTE: This may take up to 3-5 minutes. Adjust the engine throttle back to full RPM.
4. Once the unit is primed, stop the engine and connect the high pressure discharge hose to the water outlet of the unit.
NOTE: The trigger gun and dual lance assembly should already be connected to the high pressure discharge hose at this time.
start-up/cold water operation:
. Refer to the "Safety Precautions" pgs. 4-7 before starting the unit.
. Locate the Safety Decals on your unit and heed their warnings.
3. Ensure the burner switch is in the "OFF" position.
4. Pointing the trigger gun in a safe direction, unlock the trigger gun and squeeze the trigger. Hold the trigger gun open while starting the engine according to the manufacture's instructions in the engine manual accompanying this unit.
5. Once the engine has started, ensure the engine throttle is adjusted to full
RPM and perform the following procedures with the trigger gun open: leak is found, TURN UNIT OFF IMMEDIATELY! See "Risk of Fire", pg. 4. Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact Customer Service.
leak is found, DO NOT TOUCH HOSE AT LEAK!!! TURN UNIT OFF
IMMEDIATELY! Replace hose before starting the unit. See "Risk of
Injection", pg. 5. Be sure that all damaged parts are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact Customer Service.
6. At this point, the unit is operating as a cold water pressure washer. Trigger the gun several times and try adjusting the water pressure. NEVER place hand or fingers in front of the nozzle or look directly into the nozzle! High pressure water creates a risk of severe injury!
7. Do not allow unit to operate in bypass mode (with trigger closed) for more than three minutes without triggering the gun. Failure to follow this simple rule can cause premature failure of pump packings, resulting in costly pump repair.
8. Your pressure washer can deliver high pressure spray and a variety of spray patterns using cold water. If you wish to use the Hot Water application or
Cleaning with Detergents, see page 17 for the correct procedures.
Mi-T-M ® HSP-SERIES Operator's Manual
operating instructions
Hot water operation:
. 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 0 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.
. Refer to "Risk of Bodily Injury/Detergents" pg. 7. Be certain to wear protective safety attire as stated on pg. .
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
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 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.
the lower portion of the surface being cleaned and move up, using long overlapping strokes. Applying from the bottom up helps avoid streaking. 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:
. Move the burner switch to the OFF position.
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.
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 opercontrolling tHe trigger gun/dual lance assembly.
Mi-T-M ® HSP-SERIES Operator's Manual 7
storage & maintenance
specific maintenance:
ENGINE: The engine instruction manual accompanying your unit, lists specific procedures for maintenance of the engine. Following the engine manufacturer's recommendations will extend engine life.
PUMP: Change the pump oil after the first 50 hours of operation. are recommended. If oil appears dirty or milky, changes may be required in greater frequency. Use Mi-T-M pump oil
#AW-4085-006
DO NOT overfill.
and fill only to the center of the oil sight glass.
COUPLERS: There are o-ring seals inside the couplers which will deteriorate.
To replace, simply install a replacement o-ring to correct the leak.
(Additional o-rings can be purchased from your dealer.) it larger, resulting in a pressure loss. Nozzles should be replaced whenever pressure is less than 85% of the maximum. The frequency of replacement will depend upon such variables as mineral content in the water and number of hours the nozzle is used.
FUEL WATER SEPARATOR: The fuel filter has a built in water separator.
Occasionally the water has to be drained from the separator.
Follow the procedures listed below:
. Check the collection bowl daily.
. Ensure the unit is off and place an oil catch basin under the fuel cartridge.
3. Loosen the drain plug to allow the fuel/water contaminants to flow into the catch basin.
4. Retighten the drain plug when completed.
5. Dispose of drainage according to environmental regulations in your area.
BURNER AIR ADJUSTMENT: The air shutter has been factory preset for proper operation between sea level and 000 feet elevation at higher altitudes, it will be necessary to adjust the air supply to the combustion chamber. A smoke spot test is recommended during efficiency and avoid inefficient operation and excessive sooting of the combustion chamber.
. The machine must be running and the burner ON.
. Take a smoke spot test to determine if more or less air is required for proper combustion.
a. HSP-SMALL FRAME SERIES:
1. If the test is greater than a #3 smoke, turn the shutter arm
clockwise
to increase the air flow into the combustion chamber.
2. If the test is yellowish in color, turn the shutter arm
counterclockwise
to decrease the air flow into the combustion chamber.
b. HSP-LARGE FRAME SERIES:
1. If the test is greater than a #3 smoke, turn the shutter arm
counterclockwise
to increase the air flow into the combustion chamber.
2. If the test is yellowish in color, turn the shutter arm combustion chamber.
3. Hold onto the air shutter adjusting arm and loosen the locking nut. Move the shutter in /8" increments and retighten the locking nut after each /8" movement.
4. Trigger the gun on and off slowly to make sure there is proper ignition. Slight or no puffing on the ignition, and a smoke spot test of less than #3 smoke is good.
5. Repeat steps and 3 until step 4 is attained.
LEAKS: Promptly eliminate any leaks found in the pumping system by and reinstalling.
NOTE:
If using teflon tape, be certain no tape gets inside any plumbing to prevent the possibility of a plugged spray nozzle.
8 Mi-T-M ® HSP-SERIES Operator's Manual
storage & maintenance
winteriZing:
For storage and transportation purposes in subfreezing ambient temperatures, it will be necessary to winterize this unit. This unit must be protected to the lowest incurred temperature for the following reasons:
1. If any part of the pumping system becomes frozen; excessive pressure may build up in the unit which could cause the unit to burst resulting in possible serious injury to the operator or bystanders.
2. The pumping system in this unit may be permanently damaged if frozen.
FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
If you must store your unit in an area where the temperature may fall below
32°F, you can protect your unit by following the procedure outlined below.
. Gather the following items: a. Two 5 gallon containers.
b. One gallon of antifreeze. (Use an environmentally safe antifreeze.) c. Water supply.
d. Three foot hose, 1/2-3/4 I.D. with a 3/4 inch male garden hose fitting.
. Procedure: a. To start winterizing, unit must be primed and run according to the "Startup/Cold Water Procedures" listed on page 6.
b. After priming and running, shut off the unit and water supply.
c. Relieve system pressure by pointing the trigger gun in a safe direction and squeezing the trigger until water flow ceases to exit the Dual
Lance Assembly.
d. Lock the trigger gun in the OFF position and remove the Dual Lance assembly.
e. Remove the water supply hose from the unit and attach the 3 foot hose securely to the inlet connection.
f. Shut off the detergent injector. g. Fill one 5 gallon container with water.
h. Holding the 3 foot hose in an upright position, completely fill the hose with water. Then plug the hose outlet with your thumb or finger. Place the plugged end into the 5 gallon container of water.
i. Start the unit. Trigger the gun several times until all the air is worked out of the system (unit is primed). It may be necessary to adjust the engine RPM down to an idle to aid in priming.
NOTE: Proper winterizing is based on the recommended manufacturer's instructions listed on the "Protection Chart" shown on the back label of most antifreeze containers.
j. With the trigger gun held open, siphon enough water out of the 5 gallon container until there is just enough water left to mix with the antifreeze.
k. Point the trigger gun into the empty container.
l. Trigger the gun until the antifreeze begins to exit the trigger gun. Release the trigger for 3 seconds, then trigger the gun for 3 seconds. Continue cycling the trigger gun several times until all the antifreeze mixture is siphoned from the container.
m. Detach the 3 foot hose from the unit and drain any excess antifreeze back into the 5 gallon container.
n. Disconnect the hose and trigger gun from the unit and drain any excess antifreeze back into the 5 gallon container.
o. Store the hose, trigger gun and dual lance assembly with the unit in a safe area.
p. Store antifreeze solution for next use or dispose of according to state
EPA laws.
3. Optional Procedure: a. Shut the unit and water supply off.
b. Relieve system pressure by pointing the trigger gun in a safe direction and squeezing the trigger until water flow ceases to exit the nozzle.
c. Disconnect and drain the hose, trigger gun and dual lance assembly.
d. Remove the hose from the inlet side of the heat exchanger coil.
e. Start the unit and allow it to run until all the water exits the unit. Once the water has stopped flowing from the unit, turn off.
NOTE: When using this procedure, caution should be used as ice chips can form from drops of water which could cause the unit to burst if starting before completely thawed.
WARNING
risK of unit bursting.
do not store / operate unit in a freeZing enVironment!
32˚F 0˚C
coil drain plug
Mi-T-M ® HSP-SERIES Operator's Manual 9
troublesHooting
PROBABLE CAUSE SYMPTOM REMEDY
Engine will not start. Various engine problems.
Unit components are frozen.
Refer to the Engine Manual accompanying your unit.
Allow to thaw. If any part of the unit becomes frozen; excessive pressure may build up in the unit which could cause the unit to burst resulting in possible serious injury to the operator or bystanders.
No discharge at nozzle when trigger mechanism is squeezed.
Low or fluctuating pressure.
Inadequate water supply.
Kink in water inlet hose.
Kink in high pressure discharge hose.
Water inlet screen obstructed.
Pump sucking air. (Prime eliminated)
Adjustable Grip on Dual Lance is not in high pressure mode.
Obstructed or worn spray nozzle.
Damaged or obstructed valve assy. on pump.
Pump packings worn.
Ensure hose is 3/4" diameter and
Remove kink.
Tighten all water intake connections
Eliminate leaks in intake line.
Turn grip
counterclockwise
to high pressure.
to incoming water supply is turned on.
Replace kinked high pressure hose.
Remove screen, clean or replace.
Remove, clean or replace.
Replace packings.
Remove, inspect, clean or replace.
Unloader/Bypass valve not operating Repair or replace. correctly.
Water is leaking from Heat DumpValve. Water temperature is too high. Do not allow unit to operate in bypass mode (with the trigger gun closed) for more than three minutes.
Defective valve. Replace.
Oil appears milky or foamy. Water in oil. Change pump oil. Fill to proper level.
Oil leaking from unit.
Detergent will not siphon into
Low Pressure Detergent mode.
Water flows back into detergent container.
Worn seals or o-rings.
Detergent strainer obstructed. kinked. closed position.
Adjustable grip on dual lance is not in low pressure mode.
Nozzle assembly is plugged.
Too many high pressure hose extensions attached to the water outlet.
Ball & Spring in Venturi stuck.
Ball & Spring in Venturi reversed, missing or corroded.
Water flows from the nozzle when the Trigger gun is malfunctioning. trigger gun is locked in the "OFF" position.
Detergent strainer is not completely submerged in detergent solution.
Detergent hose cut, obstructed or
Detergent adjusting knob turned to
Contact Service.
Check, submerge if necessary.
Inspect, clean or replace.
Inspect, clean or replace.
Open adjusting knob. Refer to
"Cleaning with Detergents" pg. 7.
Turn grip
clockwise
to move to low pressure.
Clean or replace.
Repair or replace.
Use one extension maximum.
Remove, clean or replace.
Remove, clean or replace.
0 Mi-T-M ® HSP-SERIES Operator's Manual
SYMPTOM
troublesHooting
PROBABLE CAUSE REMEDY
Water is leaking under heat exchanger coil.
Coil drain plug is not installed. Install.
Safety relief device is relieving . Detect and correct unloader or caused by an unloader or pressure p r e s s u r e s w i t c h p r o b l e m . switch problem. . Replace safety relief device.
NEVER run unit without safety relief device. Doing so can cause an explosion!
Burner will not ignite Burner switch is not turned on.
Out of fuel.
Trigger gun is closed.
EMF Drive belt loose or broken.
Check switch position.
Refuel.
Open trigger gun for pressure.
Adjust or replace as necessary.
Flexible coupler broken.
Dirty or clogged fuel filter/water sep.
Fuel pump sucking air.
Fuel pump inoperative.
Replace.
Drain or replace as necessary.
Tighten all fuel intake connections.
Eliminate leaks in intake line.
Check pressure, replace if needed.
Fuel pickup screen is obstructed.
Dirty or clogged fuel nozzle.
Ignition module.
Consult Service.
Replace fuel nozzle.
Consult Service.
Ignition electrodes damaged or worn. With unit running and trigger gun glass to ensure there is sparking across electrodes.
No voltage.
Pressure switch override.
High limit switch override.
Improper burner air adjustment.
Fuel solenoid valve failure.
Consult Service.
Pressure should be over 50 PSI/
8 Bar to allow burner to come on.
Allow unit to cool down before reigniting.
Adjust as shown on page 8.
Replace.
Water in the fuel oil. Drain fuel filter/water separator, drain fuel tank and replace with clean fuel.
Burner runs erratically.
Burner runs, but will not heat.
Dirty fuel filter/water separator.
Dirty fuel nozzle.
Improper air adjustment setting.
Fuel pickup screen is obstructed.
Fuel pump malfunctioning.
Poor or improper fuel supply.
Low fuel pump pressure.
Dirty fuel nozzle.
Improper air adjustment setting.
Fuel pickup screen is obstructed.
Replace element.
Replace.
and refill with proper fuel.
Check fuel pump pressure, replace if needed.
Adjust as shown on page 8.
Consult Service.
Replace.
Replace.
Adjust as shown on page 8.
Consult Service.
Burner discharges white smoke.
Burner discharges black smoke.
Scale build up in heat exchanger coil. Consult Service.
Low on fuel. Refuel. If white smoke persists, consult Service.
Excessive air supply.
Insufficient air supply.
Adjust as shown on page 8.
Adjust as shown on page 8.
Mi-T-M ® HSP-SERIES Operator's Manual
maintenance cHart
PROCEDURE
Check engine oil level
Change engine oil*****
Check water pump oil level
Change water pump oil **
Oil leak inspection
Fuel leak inspection
Water leak inspection
Hose inspection
Water inlet filter inspection
Check fuel filter/water separator
Inspect belt
Replace high pressure nozzle***
Replace fuel filter/water separator
Inspect fuel pump filter*
Replace fuel nozzle*
Check burner air adjustment
Check burner electrodes*
Test water pressure*
Test fuel pressure*
Test water temperature*
Descale coil****
DAILY 3 MONTHS 6 MONTHS 9 MONTHS MONTHS
X
X X X X
X
X X X X
X
X
X
X
X
X
X
X
X
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X
X
X
X
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X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
* Must be performed by an authorized service technician.
** The pump oil must be changed after the first 50 hours of operation and every 250 hours or 3 months, whichever comes first.
*** High pressure nozzle should be replaced whenever pressure is less than 85%.
**** Scale build-up will vary with mineral content in the water and amount of usage. Descaling can range from monthly to yearly maintenance.
***** The engine oil must be changed after the first 8 hours of operation and every 50 hours or 3 months, whichever comes first.
Mi-T-M ® HSP-SERIES Operator's Manual
accessories
*Requires 7-008 /4" female quick connect.
**Requires 7-0004 3/8" female quick connect.
***PSI and GPM must be specified when ordering.
All Purpose Cleaner, Paint Surface Prep, House & Deck Wash and Heavy Duty Degreaser are specially formulated deter
gents for use with all HSP pressure washers and are packaged in One (1), Five (5) and Fifty-five (55) gallon containers.
Contact Customer Service Department at (800)-553-9053 for more information.
Mi-T-M ®
1 5 0 0 0 6
5 0 0 1 3 6
5 0 0 1 3 7
5 0 0 1 3 8
5 0 0 1 4 0
8 5 2 0 1 3 8
8 5 0 0 1 7 4
8 5 0 0 1 9 9
A W 3 0 0 5 0 0 3 5
A W 3 0 0 5 0 0 0 4
A W 3 0 1 0 0 0 3 5
A W 3 0 1 0 0 0 0 4
A W 4 0 8 5 0 0 1 6
A W 7 0 0 2 4 0 4 5
A W 7 0 0 4 0 0 4 5
A W 7 0 0 3 1 5 0 0
A W 7 0 1 5 1 2 0 0
A W 7 0 1 5 1 8 0 0
A W 7 0 1 5 2 4 0 0
A W 7 0 2 0 8 0 0 0
A W 7 0 2 0 8 0 0 1
A W 7 0 2 5 8 0 0 0
A W 7 0 3 5 8 0 0 0
S U P P L Y H O S E 3 / 4 "
H O S E R E E L 1 3 " ( H O L D S 1 0 0 ' O F H O S E )
H O S E R E E L 1 6 " ( H O L D S 2 0 0 ' O F H O S E )
B R A C K E T F O R H O S E R E E L ( U N I V E R S A L )
B R A C K E T F O R H O S E R E E L ( 2 2 " B A R )
J U M P E R H O S E F O R H O S E R E E L ( 4 0 0 0 P S I )
E X T E N S I O N H O S E 5 0 ' ( 3 0 0 0 P S I )
E X T E N S I O N H O S E 5 0 ' ( 4 5 0 0 P S I )
S A N D B L A S T E R C A R B I D E N O Z Z L E *
S A N D B L A S T E R C A R B I D E N O Z Z L E *
S A N D B L A S T E R C E R A M I C N O Z Z L E *
S A N D B L A S T E R C E R A M I C N O Z Z L E *
P U M P O I L
R O T A T I N G N O Z Z L E ( .
0 4 5 / 2 0 0 0 m a x ) *
R O T A T I N G N O Z Z L E ( .
0 4 5 / 5 0 0 0 m a x ) *
R O T A T I N G B R U S H *
E X T E N S I O N W A N D 1 2 ' * * ( 3 0 0 0 P S I )
E X T E N S I O N W A N D 1 8 ' * * ( 3 0 0 0 P S I )
E X T E N S O N W A N D 2 4 ' * * ( 3 0 0 0 P S I )
R O T A R Y S U R F A C E C L E A N E R * * ( 2 0 " 4 0 0 0 P S I )
R O T A R Y S U R F A C E C L E A N E R * * ( 2 8 " 4 0 0 0 P S I )
2 5 " P O W E R B R O O M ( 5 8 0 ° N O Z Z L E S ) * / * * *
3 5 " P O W E R B R O O M ( 7 8 0 ° N O Z Z L E S ) * / * * *
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HSP-SERIES Operator's Manual 3
statement of warranty
Mi-T-M warrants all parts, (except those referred to below), of your new Mi-T-M HSP-Series Pressure
Washer to be free from defects in materials and workmanship during the following periods:
For Lifetime (Limited) against freezing and cracking:
Pump Manifold (for MGH/MGV and 3MGH/3MGV Series)
For Seven (7) Years from the date of original purchase:
High Pressure Pump (for MGH/MGV and 3MGH/3MGV Series)
For Three (3) Years from the date of original purchase:
Heat Exchanger Coil
For One () Year from the date of original purchase:
High Pressure Pump (for 0MGH/0MGV Series)
Frame
Guard or Shields
Plumbing
Pulley
EMF System
For Ninety (90) days from the date of original purchase:
Control Switches
Regulating Valve
Safety Switches
Fuel Pump
Unloader Valve
Fuel Solenoid
High Limit Thermostat
Pressure Switch
Electrodes
Safety Relief Valve
Temperature Switch
For Thirty (30) day from the date of original purchase:
High Pressure Hose
Strainers / Filters
Trigger Gun
Wand
Defective parts not subject to normal wear and tear will be repaired or replaced at our option during the warranty period. In any event, reimbursement is limited to the purchase price paid.
eXclusions
. Engine is covered under separate warranty by its respective manufacturer and is subject to the terms set forth therein.
. Normal wear parts:
Pump Packings
Pump Valves
Detergent Valves
O-rings
Spray Nozzles
Screw Connectors/Quick Couplings
Fuel Filters
Belts
3. This warranty does not cover parts damaged due to normal wear, misapplication, misuse, operation at other than recommended speeds, pressures or temperature. Parts damaged or worn because of the use of caustic liquids or by operation in abrasive or corrosive environments or under conditions causing pump cavitation are not warranted. Failure to follow recommended operating and maintenance procedures also voids warranty.
4. The use of other than genuine Mi-T-M Repair Parts will void warranty. Parts returned, prepaid to our factory or to an Mi-T-M Authorized Service Center will be inspected and replaced free of charge if found to be defective and subject to warranty. There are no warranties which extend beyond the description of the face hereof. Under no circumstances shall Mi-T-M bear any responsibility for loss of use of the unit, loss of time or rental, inconvenience, commercial loss or consequential damages.
4 Mi-T-M ® HSP-SERIES Operator's Manual
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