Mi-T-M HSE-1002-0M10 User manual

Mi-T-MHSE-SERIES Operator's Manual 1
©Copyright 2001, Mi-T-M Corporation® 37-0642-E/F-030601
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!
OPERATOR'S MANUAL FOR
HSE-SERIES
HOT WATER
PRESSURE WASHERS
®
C US
201473

2 Mi-T-M®HSE-SERIES Operator's Manual
TABLE OF CONTENTS
INTRODUCTION ..................................................................................................................... 3
IMPORTANT SAFETY WARNINGS ....................................................................................4-7
RISK OF ELECTRIC SHOCK OR ELECTROCUTION................................................4
RISK OF EXPLOSION OR FIRE.................................................................................5
RISK OF ASPHYXIATION ..........................................................................................5
RISK OF INJECTION OR SEVERE CUTTING INJURY .............................................6
RISK OF BURNS ........................................................................................................6
RISK OF BURSTING .................................................................................................. 6
RISK FROM MOVING PARTS....................................................................................6
RISK OF BODILY INJURY.......................................................................................... 7
FEATURES ........................................................................................................................ 8-11
HSE-SMALL FRAME ...............................................................................................8-9
HSE-LARGE FRAME...........................................................................................10-11
INSTALLATION & PREPARATION .................................................................................12-15
ATTIRE ..................................................................................................................... 12
SETUP ...................................................................................................................... 12
POWER CORD CONNECTION...........................................................................12-13
BURNER FUEL TANK .............................................................................................. 13
ADJUSTABLE PRESSURE DUAL LANCE ............................................................... 14
DUAL LANCE CONNECTION................................................................................... 14
WATER SUPPLY ...................................................................................................... 14
UNLOADER .............................................................................................................. 15
HEAT DUMP VALVE ................................................................................................ 15
PRE-START INSPECTION PROCEDURES............................................................. 15
NOTES ................................................................................................................................. 16
OPERATING INSTRUCTIONS ........................................................................................ 18-20
FLUSHING THE SYSTEM ........................................................................................ 18
START-UP/COLD WATER OPERATION ................................................................. 18
HOT WATER OPERATION ......................................................................................19
STEAM OPERATION................................................................................................ 19
CLEANING WITH DETERGENTS ............................................................................ 19
SHUTDOWN............................................................................................................. 20
STORAGE & MAINTENANCE .........................................................................................20-21
SPECIFIC MAINTENANCE....................................................................................... 20
WINTERIZING .......................................................................................................... 21
TROUBLESHOOTING .....................................................................................................22-24
MAINTENANCE CHART....................................................................................................... 25
ACCESSORIES.....................................................................................................................26
OPTIONS .............................................................................................................................. 27
STATEMENT OF WARRANTY ............................................................................................. 28

Mi-T-MHSE-SERIES Operator's Manual 3
INTRODUCTION
Congratulations on the purchase of your new Mi-T-M HSE-Series hot water pressure washer! You can be assured your
Mi-T-Mhotwaterpressurewasherwasconstructedanddesignedwithqualityandperformanceinmind. Eachcomponent
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,
maintenanceandtroubleshootingstepsdescribedinthismanual,youwillreceiveyearsoftroublefreeoperationfromyour
newMi-T-Mhotwaterpressurewasher. Thecontentsofthismanualarebasedonthelatestproductinformationavailable
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 !
Theseparagraphs are surroundedby a"SAFETY ALERTBOX". This boxis used todesignate
and emphasize Safety Warnings that must be followed when operating this pressure washer.
AccompanyingtheSafetyWarningsare"signalwords"whichdesignatethedegreeorlevelof
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
usedto call attention toitems or procedures that could be dangerous to you or otherpersons
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.
SERIALNUMBER_________________________________
Inspectforsignsofobviousorconcealedfreightdamage.Ifdamagedoesexist,fileaclaimwiththetransportationcompany
immediately. Be sure that all damaged parts are replaced an 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:
1. Model Number
2. Serial Number
3. Date and Place of Purchase

4 Mi-T-M®HSE-SERIES Operator's Manual
IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using this product, basic precautions should always be observed, including the following:
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
POTENTIAL CONSEQUENCE PREVENTION
Seriousinjuryordeathcouldoccurif
the pressure washer is not properly
grounded. Yourpressurewasheris
poweredbyelectricityandmaycause
electric shock or electrocution if not
usedproperly.
Electrical shock may occur from
electrical cord.
Electrical shock may occur if
pressure washer is not operated
properly.
Serious injury or death may occur if
electrical repairs are attempted by
unqualified persons.
Thisproductmustbegrounded. Makesurethe
pressurewasher is equipped withaGFCI built
intothepowersupplycord. Ifthisisnotavailable,
the pressure washer must be plugged into a
receptacle that is protected by a GFCI.
Disconnect when not in use.
If your unit is equipped with a GFCI, DO NOT
drop the GFCI as damage could result. If the
GFCI is accidentally dropped, be certain to
test the GFCI before using to ensure it is
working properly. (Follow instructions on
GFCI for test procedures.)
Always be certain the unit is receiving proper
voltage. Before plugging the unit into a
compatible power source, be certain the
switch is in the "OFF" position. Disconnect
when not in use.
Donotmodifyplugprovidedwiththeproduct. If
it will not fit the outlet, have a proper outlet
installed by a qualified electrician. Do not use
any type of adapter.
Checkpowercordforsignsofcrushing,cutting
orheatdamage. Ifreplacementofplugorcord
isneeded,useonlyidenticalreplacementparts.
Do not use extension cords with this pressure
washer.
Keepallconnectionsdryandofftheground. Do
not allow electrical cords to lay in water or in
such a position where water could come in
contact with them. Do not touch plug with wet
hands.
Do not pull on the electrical cord to disconnect
from the outlet.
Do not direct spray on or into electrical
installationsofanykind! Thisincludeselectrical
outlets, light bulbs, fuse boxes, transformers,
the unit itself, etc.
Donot allowmetalcomponentsofthepressure
washer to come in contact with live electrical
components.
Neveroperatethepressurewasherwithsafety
guards/covers removed or damaged.
Any electrical wiring or repairs performed on
this pressure washer should be done by
Authorized Service Personnel in accordance
with National and Local electrical codes.
Beforeopeninganyelectricalenclosure,always
shut off the pressure washer, relieve pressure
andunplugthepressurewasherfromthepower
source. Allow the pressure washer to cool
down. Never assume the pressure washer is
safetoworkonjustbecauseitisnotoperating.
It could restart at any time! Service in a clean,
dry, flat area.
RISK OF
ELECTRIC SHOCK
OR
ELECTROCUTION
HAZARD

Mi-T-MHSE-SERIES Operator's Manual 5
POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
RISK OF
EXPLOSION OR FIRE Serious injury or death may occur
from normal sparks in the multiple
ignition sources or burner exhaust.
Seriousinjuryordeathmayoccuras
a result of improper fueling.
Serious injury or death may occur
if system safety's are not properly
maintained.
Always operate pressure washer in a well
ventilated area free of flammable vapors,
combustible dust, gases or other combustible
materials.
Donotstorethepressurewashernearanopen
flame or any equipment such as a stove,
furnace,waterheater,etc.,whichutilizesapilot
light or sparking device.
Do not use this pressure washer to spray
flammable material!
Do not smoke while filling burner fuel tank.
Neverfilltheburnerfueltankwhilethepressure
washer is running or hot. Allow 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.
Burner Fuel Tank:
UseNo.1orNo. 2 fueloil/dieselorkerosene.
Do not use gasoline.
Do not operate the unit if diesel fuel is spilled.
Wipe the pressure washer clean and move it
awayfromthespill. Avoidcreatinganyignition
until the diesel fuel has evaporated.
ThispressurewasherhasaSafetyReliefdevice
which should never be altered, modified,
removed or made inoperative. If the device
fails, replace immediately with only genuine
manufacturer replacement part.
HAZARD
Serious injury or death may occur
from inhaling burner exhaust or
dangerous vapors.
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
areaswith exhaust fanswhichcan cause poor
air exchange.
Follow all safety instructions provided with the
materialsyouarespraying. Useofarespirator
may be required when working with some
materials. Do not use this pressure washer to
dispense hazardous detergents.
RISK OF
ASPHYXIATION

6 Mi-T-M®HSE-SERIES Operator's Manual
RISK OF BURNS
RISK FROM MOVING PARTS
Serious injury may occur from
touching the heat exchanger. This
area can remain hot for some time
after the pressure washer is
shutdown.
Serious injury may occur from a
pressure washer malfunction or
exploding accessories if incorrect
system components, attachments or
accessories are used.
Serious injury or death may occur if
attempting to start the pressure
washer when the pump is frozen.
Serious injury may occur to the
operator from moving parts on the
pressure washer.
Nevermakeadjustmentstothefactorysetpressures.
Never exceed manufacturers maximum allowable
pressure rating of attachments.
Do not allow any hoses to make contact with heat
exchanger to prevent the possibility of bursting.
Avoid dragging the hoses over abrasive surfaces
such as cement.
Use only manufacturer 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
thepump. Donot start thepressure washer if ithas
beentransportedinanopenorunderheatedvehicle
without first allowing the pump to thaw.
RISK OF BURSTING
Do not operate the unit without all protective
covers in place.
Follow the maintenance instructions specified in
the manual.
Never make adjustments to the unit while it is
connected to the power source.
Neverallowanypartofyourbodytocontacttheheat
exchanger.
Do not leave unit unattended after shutdown until it
is completely cooled down as described in the
"SHUTDOWN" procedures listed on page 20 of this
manual.
HAZARD POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Serious injury or death could occur
from high pressure spray penetrating
the skin.
Keep 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.
Thisproduct is to be used only bytrained operators.
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
thehighpressurespray. Ifahoseorfittingisleaking,
NEVER PLACE YOUR HAND DIRECTLY ON THE
LEAK.
NEVER operate the gun with the trigger wired in the
openposition. To prevent accidentaldischarge, the
trigger gun should be securely locked when not in
use.
Before removing the spray nozzle or servicing the
unit,ALWAYSshutofftheunit and trigger the gunto
release trapped pressure. (Even after you shut off
theunit,thereishighpressurewaterleftinthepump,
hose and gun until you release it by triggering the
gun.)
RISK OF INJECTION
OR
SEVERE CUTTING INJURY

Mi-T-MHSE-SERIES Operator's Manual 7
RISK OF BODILY INJURY
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY WARNINGS BEFORE USING PRESSURE WASHER
Serious injury or death may occur
from detergents contacting the skin.
Serious injury can occur from loose
debris being propelled at a high speed
from the spray gun.
Injury may occur if the operator loses
his balance caused by the thrust of
water traveling through the spray
nozzle.
Injury may occur from the pressure
washer.
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
detergentsoracid type cleaners withthis pressure
washer.
Protectiveequipmentsuchasrubbersuits, gloves
and respirators are advisable, especially when
using cleaning detergents.
Keep all detergents out of the reach of children!
ALWAYSwear protective goggleswhen operating
the unit to shield the eyes from flying debris and
detergents.
DONOTdirectspraytowardfragilematerialssuch
as glass for shattering could occur.
If the pressure washer is equipped with an Auto
start/stop feature, the unit will shutdown until the
gun is triggered. To prevent accidental high
pressure discharge, do not leave unit unattended
while in this mode.
Stay alert-watch what you are doing. Do not
operatetheunitwhenfatiguedorundertheinfluence
of alcohol or drugs.
NEVERsqueezethetriggerunlesssecurelybraced.
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.
ALWAYSholdon firmly to thegun/lance assembly
when starting and operating the unit. Failure to do
socancausethelancetofallandwhipdangerously.
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.
Place unit in a clean, dry, flat area for servicing.
Before servicing the unit: turn the unit off, relieve
the water pressure from the trigger gun, and 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.
HAZARD POTENTIAL CONSEQUENCE PREVENTION
!SAVE THESE INSTRUCTIONS!

8 Mi-T-M®HSE-SERIES Operator's Manual
HSE-SMALL FRAME FEATURES
0MHSE001-113000-KS

Mi-T-MHSE-SERIES Operator's Manual 9
FEATURES LISTING
1. Pneumatic Wheels
2. ProtectiveRollcage
3. Control Panel
4. Decal-Warning/Caution/Operation(E/S)
5. Switch-Off/Pump/Burner (Steam Optional)
6. Center Balanced Lifting Eye
7. Convenient Push/Pull Handle
8. Decal-Warning: Hot (E/S)
9. Heat Exchanger Exhaust
10. Wand Holder
11. Water Inlet
12. Water Strainer w/Bowl Type Filter
13. Water Float Tank
14. Detergent Metering Valve
15. Low Pressure (Direct Feed)
High Pressure (Float Tank)
High Pressure Pump w/Unloader
16. Pressure Switch
17. Brake
18. TEFC Pump Motor
19. Electric Cord w/GFCI
20. Decal- Hang Tag (E/S)
21. Burner Air Regulation
22. Decal-Caution: Risk of Fire (E/S)
23. Burner Fuel Tank
24. Decal- Data Plate
25. High Pressure Outlet
26. Coil Drain Plug
27. Decal-Warning: Risk of Explosion (E/S)
28. High Pressure Hose
29. Trigger Safety Lock
30. Trigger Gun
31 Insulated Lance
32. Adjustable Pressure Dual Lance
33. Nozzle
SPECIFIC UNIT INFORMATION
BODY/FRAME: One piece, welded construction, full roll
cage with solid steel axles, lifting hook and convenient
push/pullhandle.
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: Insulated, with adjustable pressure.

10 Mi-T-M®HSE-SERIES Operator's Manual
0MHSE015-120100-KS
HSE-LARGE FRAME FEATURES

Mi-T-MHSE-SERIES Operator's Manual 11
FEATURES LISTING
SPECIFIC UNIT INFORMATION
BODY/FRAME: Onepiece,weldedconstruction,fullrollcagewith
solidsteelaxles,liftinghookandconvenientpush/pullhandle.
PORTABILITY: Four pneumatic four-ply 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: Insulated, with adjustable pressure.
1. Decal- Warning: Risk of Explosion (E/S)
2. Coil Drain
3. High Pressure Outlet
4. Data Plate
5. Burner Air Regulation
6. Brake
7. Burner Fuel Tank
8. Pnuematic Wheels
9. Pressure Switch
10. High Pressure Hose w/Unloader
11. TEFC Pump Motor
12. Water Float Tank
13. Water Strainer w/Bowl
14. Water Inlet
15. Heat Exchanger Exhaust
16. Decal- Warning: Hot (E/S)
17. Center Balance Lift Eye
18. Convient Push/Pull Handle
19. Detergent Metering Valve
20. Decal- Caution: Risk of Fire (E/S)
21. Decal- Hang Tag (E/S)
22. Electric Cord
23. Beltguard
24. Decal- Warning: Beltguard in Place (E/S)
25. Wand Holder
26. High Pressure Hose
27. Trigger Safety Lock
28. Trigger Gun
29. Insulated Lance
30. Adjustable Pressure Dual Lance
31. Nozzle
32. Switch (On/Off/Burner)
33. Decal- Warning/Caution/Operation (E/S)
34. Control Panel
35. Protective Roll Cage
36. Protective Cover Assembly

12 Mi-T-M®HSE-SERIES Operator's Manual
SET-UP:
1. Thisunitshouldonlybeplacedonalevelsurfacetoensureproperlubrication
forthewaterpump whileoperating. NEVERspraywaterdirectly ontheunit.
2. Do not use unit in an area:
-with insufficient ventilation.
-where there is evidence of oil or fuel leaks.
-where flammable gas vapors may be present.
3. Engage brake to prevent the unit from moving while operating.
4. Do not allow the unit to be exposed to rain, snow or freezing temperatures.
Ifanypartoftheunitbecomesfrozen,excessivepressuremaybuildupinthe
unit which could cause it to burst resulting in possible serious injury to the
operator or bystanders.
5. Pumpoillevelshouldbecheckedbeforeeachuse. Makecertaintheoilison
the"Full"markonthedipstickorinthecenteroftheoilsightglass. Ifthelevel
appears to be low, fill with Mi-T-M pump oil #AW-4085-0016.
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
respiratorymask)mayberequiredwhenusingdetergentcleaningagentswiththis
washer.
POWER CORD CONNECTION:
1. Make certain the motor switch is in the "OFF" position.
2. Ensureelectricalsupplyisidenticaltothespecificationslistedonthepressure
washer data plate.
3. GROUNDINGINSTRUCTIONS: Thisproductmustbegrounded. Ifitshould
malfunctionorbreakdown,grounding provides a path of least resistance for
electriccurrent toreducetherisk ofelectricshock. Thisproduct isequipped
withacordhavinganequipment-groundingconductorandagroundingplug.
Theplugmustbepluggedintoanappropriateoutletthat isproperly installed
and grounded in accordance with all local codes and ordinances.
4. DANGER: Improperconnectionoftheequipment-groundingconductorcan
result in a risk of electrocution. Check with a qualified electrician or service
personnelifyouareindoubtastowhethertheoutletisproperlygrounded. Do
not modify the plug provided with the product - if it will not fit the outlet, have
a proper outlet installed by a qualified electrician. Do not use any type of
adaptor with this product.
5. GROUND FAULT CIRCUIT INTERRUPTER PROTECTION:
a. SINGLEPHASE: IfthispressurewasherisprovidedwithaGroundFault
CircuitInterrupter(GFCI)builtintotheplugorthepowersupplycord,test
the GFCI each time it is plugged into an outlet according to instructions
ontheGFCI. DONOTuse thepressurewasherifthetestfails! TheGFCI
provides additional protection from the risk of electric shock. Should
replacement of the plug or cord become necessary, use only identical
replacement parts that include GFCI protection.
WARNING
RISK OF ASPHYXIATION!
USE THIS PRODUCT ONLY IN
WELL VENTILATED AREAS!
DO NOT OPERATE IN AN
ENCLOSED AREA. THE
EXHAUST CONTAINS CARBON
MONOXIDE, A POISONOUS,
ODORLESSANDINVISIBLEGAS.
BREATHING THIS GAS CAN
CAUSE SERIOUS INJURY,
ILLNESS & POSSIBLE DEATH.
DANGER
RISK OF EXPLOSION OR FIRE!
DONOTPLACEUNITINANAREA
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!
INSTALLATION & PREPARATION
CONTINUED
DANGER
RISK OF ELECTROCUTION!
THIS UNIT MUST BE
CONNECTED TO A PROPERLY
GROUNDED OUTLET. DO NOT
USE AN ADAPTER OR REMOVE
THE THIRD GROUNDING
PRONG.

Mi-T-MHSE-SERIES Operator's Manual 13
BURNER FUEL TANK:
1. Review "Risk of Explosion or Fire" pg. 5, before fueling.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Filltheburnerfueltankwithgoodquality,cleanNo.1orNo.2fueloil/diesel
or kerosene. Do not use gasoline!
WARNING
RISK OF EXPLOSION OR FIRE!
ALWAYS STORE FUEL AWAY
FROMTHEWASHERWHILETHE
UNIT IS RUNNING OR HOT.
DANGER
RISK OF FIRE!
-DO NOT SMOKE WHILE
FUELING!
-DO NOT FILL THE FUEL TANK
WHILE UNIT IS RUNNING OR
HOT.ALLOWUNITTOCOOLFOR
TWO MINUTES BEFORE
REFUELING.
-DO NOT FILL FUEL TANK TO
POINT OF OVERFLOWING.
ALLOW APPROXIMATELY 1/4"
OF TANK SPACE FOR FUEL
EXPANSION.
INSTALLATION & PREPARATION
POWER CORD CONNECTION CONT'D.:
5. b. SINGLEPHASE: IfthispressurewasherisnotprovidedwithaGFCI,
this pressure washer should only be connected to a receptacle that
is protected by a Ground Fault Circuit Interrupter (GFCI) to comply
with the National Electric Code (NFPA 70) and to provide additional
protection from the risk of electric shock.
c. THREE PHASE: These pressure washers are not provided with
GFCI protection.
6. EXTENSIONCORDS: Mi-T-MDOESNOTRECOMMENDTHEUSEOF
EXTENSIONCORDS! Ifuseofanextensioncordisunavoidable,it must
be plugged into a GFCI found in circuit boxes or protected receptacles.
Whenusinganextensioncord,consultaqualifiedelectriciantodetermine
the proper wire gauge needed for the length of the extension cord.
SINGLE PHASE: Use only 3-wire extension cords that have 3-prong
grounding-typeplugsand3-polecordconnectorsthataccepttheplug
from the product.
THREE PHASE: Use only 4 wire extension cords that have 4-prong
groundingtypeplugsand4-polecordconnectorsthataccepttheplug
from the product.
Use only extension cords that are intended for outdoor use. These
extension cords are identified by a marking "Acceptable for use with
outdoor appliances; store indoors while not in use." Use only extension
cordshavinganelectricalratingnotlessthantheratingoftheproduct. Do
notusedamagedextensioncords. Examineextensioncordbeforeusing
andreplaceifdamaged. Donotabuseextensioncordanddonotyankon
any cord to disconnect. Keep cord away from heat and sharp edges.
Always connect and disconnect the extension cord from the receptacle
beforeconnectinganddisconnectingtheproductfromtheextensioncord.
7. Ensuretheareabetweenthepressurewashercordandoutletiskeptdry.
8. Insert themaleplugintoagroundedACoutlet. DO NOT usean adapter
OR remove the grounding plug!!
WARNING
RISK OF ELECTROCUTION!
TO REDUCE THE RISK OF
ELECTROCUTION, KEEP ALL
CONNECTIONS DRY AND OFF
THE GROUND. DO NOT TOUCH
PLUG WITH WET HANDS.

14 Mi-T-M®HSE-SERIES Operator's Manual
INSTALLATION & PREPARATION
ADJUSTABLE PRESSURE DUAL LANCE:
This unit features an Adjustable Pressure Dual Lance which allows the user
toselecta high or low pressure "fan" spray. Simply rotate the adjustable grip
on the dual lance to achieve the desired pressure selection.
1. Selectionofhighpressurecanbeachievedbyturningtheadjustablegrip
on the Dual Lance assembly counterclockwise as shown in the figure
below.
2. Selection of low pressure can be achieved by turning the adjustable grip
on the Dual Lance clockwise as shown in the figure below.
DUAL LANCE CONNECTION:
1. Be certain the trigger gun is locked in the "OFF" position.
2. Connecttheduallanceassembly tothetriggergun assemblyatthistime
(if applicable). Be certain the connection is securely tightened.
WATER SUPPLY:
1. Selectawatersupplyhosewhichisaqualitygradeofgardenhosemeasuring
at least 3/4" ID and no longer than 50 feet.
2. Ifyourunitisequippedwithawaterstrainer,ensureitiscleanandfreeofany
obstructions. Periodic cleaning of the water strainer will help prevent pump
problems. Asastrainerbecomesobstructed,itrestrictsproperflowofwater
to the pump. This can result in cavitation which will cause premature failure
of pump packings.
a. Unscrew the strainer bowl from the unit.
b. Remove 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: If there is a high mineral content in your water, it is recommended that a
water softener be used 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 between a minimum of 20 pounds per square
inch (PSI) and a maximum of 125 PSI.
b. IncomingGPMmustbe approximatelyonegallonmorethantheoutgoing
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 125°F. Excessive pump
damage may result if the water temperature exceeds this acceptable
level.
5. Neverallow the unittooperatewithoutthe incoming water line attachedand
the water supply completely turned on.
STRAINER.TIF/D1
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!
OMGEN323
OMGEN215

Mi-T-MHSE-SERIES Operator's Manual 15
INSTALLATION & PREPARATION
END OF PREPARATION INSTRUCTIONS
UNLOADER:
Standard Models:
The unloader has been preset at the factory.
Steam Option Models:
The unloader has an adjustment knob which has a minimum/maximum
setting. Move the unloader clockwise to the maximum setting for Cold/Hot
water operation. Move counterclockwise to minimum setting for Steam
operation.
HEAT DUMP VALVE:
Toensurethewatertemperaturedoesnotexceedacceptablelevels,neverallow
thepressurewashertooperateinthebypassmode(withtheunitrunningandthe
trigger closed) for more than three minutes.
A "heat dump valve" has been added to this unit to protect the pump. This valve
will open and release water if the water temperature in the pump has exceeded
140°F. Thiswillallowfresh,coolwatertoenterthesystem,thereforepreventing
premature failure of pump packings.
PRE-START INSPECTION PROCEDURES:
Before starting the unit, perform the following procedures:
1. Inspect the electrical cords for cuts. If a cut is found, DO NOT TOUCH OR
USE CORD! Replace cord before starting unit.
2.. Check the oil level in the pump.
3. Inspect the water inlet strainer. Clean or replace if necessary. See "Water
Supply", #2, pg 14.
4. Check all hose connections to ensure they are securely tightened.
5. Inspectforsystemwaterleaks,oilleaksandfuelleaks. Ifafuelleakisfound,
DO NOT START UNIT! See "Risk of Explosion or Fire", 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. 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 or Severe Cutting Injury", pg. 7. 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.
UNLOADERVALVE
OMHSE063

16 Mi-T-M®HSE-SERIES Operator's Manual
NOTES

Mi-T-MHSE-SERIES Operator's Manual 17
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!

18 Mi-T-M®HSE-SERIES Operator's Manual
OPERATING INSTRUCTIONS
FLUSHING THE SYSTEM:
Thisunithasasteelcoilwhich,aftersetting,willcausethewaterremaininginthe
coil from the previous usage to turn brown or black. This 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 MODELS:
1. Turn on the water supply.
2. Low pressure water will begin flowing from the water outlet. This allows
the unit to flush any particles from the system. The unit is flushed when
the water is clear.
3. Once the system is flushed, turn off the water supply and connect the high
pressure hose to the water outlet of the unit.
4. Connect the trigger gun and dual lance assembly to the high
pressure hose.
5. Turn on the water supply.
FLOAT TANK MODELS:
1. Turn on the water supply.
2. Movetheswitch tothe"Pump"position. Lowpressurewaterwillbeginflowing
from the water outlet. This allows the unit to flush any particles from the
system. The unit is flushed when the water is clear.
3. Once the system is flushed, move the switch to the "OFF" position and
connect the high pressure hose to the water outlet of the unit.
4. Connect the trigger gun and dual lance assembly to the high
pressure hose.
START-UP/COLD WATER OPERATION:
1. Refer to the "Safety Precautions" pgs. 4-7 before starting the unit.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Ensure that the Switch is in the "OFF" position.
4. Pointing thetriggerguninasafedirection,unlockthetriggergunandsqueeze
the trigger. Brace yourself for possible gun kickback when the pump starts.
5. Move the Switch to the "Pump" position.
6. Once the unit has started, perform the following procedures with the gun
open:
a. Inspect for system water leaks, oil leaks and fuel leaks.
If a fuel leak is found, TURN UNIT OFF IMMEDIATELY! See "Risk of
Explosion or Fire", pg. 5. Be sure that all damaged parts are replaced
andthatthemechanical problems are corrected prior to operation of the
unit. If you require service, contact Customer Service.
b. Inspect high pressure hoses for kinking, cuts and leaks.
Ifacutorleakisfound,DONOTTOUCHHOSEATLEAK!!! TURNUNIT
OFF IMMEDIATELY! Replace hose before starting the unit. See "Risk
ofInjectionorSevereCuttingInjury"pg.6. Besurethatalldamagedparts
are replaced and that the mechanical problems are corrected prior to
operation of the unit. If you require service, contact Customer Service.
7. At this point, the unit is operating as a cold water pressure washer. Trigger
thegunseveraltimesandtryadjustingthewaterpressurebyrotatingthegrip
ontheduallance. NEVERplacehandorfingersinfront ofthenozzleorlook
directly into the nozzle! High pressure water creates a risk of severe injury!
8. Donotallowunittooperateinbypassmode(withtriggerclosed)formorethan
threeminuteswithouttriggeringthegun. Failuretofollowthissimplerulecan
cause premature failure of pump packings, resulting in costly pump repair.
NOTE: If this unit is equipped with an Auto Start/Stop feature, the pressure
washerwillshutdownifthegunisnottriggeredafteradesignatedamount
of time. The pressure washer will start again once the gun is triggered.
The Auto Start/Stop feature is preset at the factory for shutdown at 90
seconds. It can be adjusted by an Authorized Service Technician to
shutdownfromnousageafteraminimumof3secondstoamaximumof
5 minutes.
9. Yourpressurewashercandeliverhighpressuresprayandavarietyofspray
patternsusingcoldwater. IfyouwishtousetheHotWater,Steamapplication
or Cleaning with Detergents, see page 19 for the correct procedures.
CAUTION
RISK OF UNIT DAMAGE.
BE CERTAIN THE HOSE, GUN &
DUAL LANCE ASSY. ARE NOT
CONNECTED TO THE UNIT
WHILEFLUSHINGTHESYSTEM.
FLUSHING ALLOWS MINERAL
DEPOSITS TO BE RELEASED
FROM THE SYSTEM WHICH
WOULD OBSTRUCT OR
DAMAGETHEGUNANDNOZZLE
ASSEMBLY RESULTING IN
COSTLY REPAIRS.
CAUTION
RISK OF DAMAGE.
DO NOT ALLOW SPRAY
PATTERN TO REMAIN ON A
FIXEDAREAFORANEXTENDED
PERIOD OF TIME. POSSIBLE
DAMAGE MAY OCCUR TO THE
AREA.
DANGER
RISK OF INJECTION CAUSING
SEVERE INJURY!
-KEEPCLEAROFNOZZLE! NEVER
PLACE HAND OR FINGERS IN
FRONT OF NOZZLE!
-DO NOT DIRECT DISCHARGE
STREAM AT PEOPLE OR PETS!
-AUTO START/STOP FEATURE
WILL SHUTDOWN THE PRES-
SURE WASHER UNTIL GUN IS
TRIGGERED. TO PREVENT
ACCIDENTAL HIGH PRESSURE
DISCHARGE,DONOTLEAVEUNIT
UNATTENDED WHILE IN THIS
MODE.

Mi-T-MHSE-SERIES Operator's Manual 19
HOT WATER OPERATION:
1. Followthesteps1-8outlinedfor"START-UP/COLDWATEROPERATION".
2. MovetheSwitchtothe"Burner"position. Oninitialstart-up,waterwillbegin
turninghotinapproximately20secondsandwillreachmaximumtemperature
inapproximately2-1/2minutes,providedthetriggerremainssqueezed. The
burner will stop firing when the trigger is released.
NOTE: Whilespraying,itisnormal for the burner tofire intermittently. The high
limitswitchwillcausecombustiontoceasewhenthetemperatureofthe
discharged water exceeds the temperature setting of the switch.
Combustion will begin again when the water temperature drops below
the minimum setting .
Atthis point, theunitis operating asahotwater pressure washer. Beextremely
cautious when adjusting the pressure and controlling the trigger gun/dual lance
assembly to avoid the possibility of burns.
STEAM OPERATION:
1. Follow steps 1-8 outlined for "START-UP/COLD WATER OPERATION".
2. Ensurethequick-connectattheendoftheduallanceiscoolenoughtotouch,
then remove the high pressure nozzle and replace it with the steam nozzle.
3. Turn unloader knob completely counterclockwise to the minimum setting.
4. Turn the Burner/Steam switch to "Steam".
NOTE: The burner will shut down if the switch is moved to "Steam" without first
settingtheunloadertominimumoroperatinginthehighpressuremode.)
At this point, the unit will operate as a steam pressure washer. Be extremely
cautious when adjusting the pressure and controlling the trigger gun/dual lance
assembly to avoid the possibility of burns.
CLEANING WITH DETERGENTS:
NOTE: This feature is designed for use with mild detergents only. Since the
cleaning solution travels through various parts of the pressure washer,
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. Preparedetergentsolutionaccordingtolabeldirections. (Neverpumpacids,
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
detergentsolution.
4. DIRECT FEED: Be certain the adjustable grip on the dual lance is turned
completely clockwise for low pressure detergent operation.
NOTE: Thisinjectionsystemisdesignedtoapplydetergentsunderlowpressure
only. Itwillnotallowdetergentsolutionstobeintroducedintothesystem
unless the dual lance is set in the low pressure mode.
FLOAT TANK: Adjust the amount of detergent desired. Turn the metering
valve completely counterclockwise to set at maximum siphon rate.
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
minimizethechancesofthedetergentdrying,whichmayresultindamaging
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,
DIRECT FEED: Rotate the adjustable grip on the dual lance
counterclockwise for high pressure.
FLOAT TANK: Turn the detergent metering valve to the "OFF" position.
Unlockthetriggergunandspray. Itwilltake 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. Thispreventsthe possibility of corrosion or detergentresidue causing
mechanical problems during the next use.
OPERATING INSTRUCTIONS
WARNING
RISK OF BURN!
THE WATER TEMPERATURE
COULD BECOME VERY HOT
DURING HOT WATER/STEAM
OPERATION. BE CAUTIOUS
WHEN ADJUSTING PRESSURE
OR CONTROLLING THE
TRIGGER GUN/DUAL LANCE
ASSEMBLY.
OMGEN215
DETERGENT METERING VALVE
DETMTRVL.TIF.D1
ADJUSTABLEGRIP

20 Mi-T-M®HSE-SERIES Operator's Manual
OPERATING INSTRUCTIONS
SHUTDOWN:
1. Move the Switch to the "Pump" 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.)
3. Move the Switch to the "OFF" position. (Auto Start/Stop Option will shut
the unit down, but total shutdown requires Switch to be moved to the
"OFF" position.)
4. Turn off the water supply and trigger the gun momentarily to relieve trapped
pressure.
5. Disconnect and drain the high pressure hose, gun, and dual lance. Wipe the unit
clean and store in a non-freezing environment.
STORAGE & MAINTENANCE
SPECIFICMAINTENANCE:
PUMP: Changethe pump oilafter the first 50hours of operation. Afterinitial change,
every 3 months or 250 hour intervals are recommended. If oil appears dirty or
milky, changes may be required in greater frequency. Use Mi-T-M pump oil
(#AW-4085-0016)andfillonlytothecenteroftheoilsightglass. DONOToverfill.
QUICKCOUPLERS: Thereareo-ringsealsinsidethecouplerswhichwilldeteriorate.
To replace, simply install a replacement o-ring to correct the leak. (Additional o-
rings can be purchased from your dealer.)
NOZZLE: Water flow through the spray nozzle will erode the orifice, making 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.
BURNER AIR ADJUSTMENT: The air shutter has been factory preset for proper
operationbetweensealeveland2000feetelevationatstandardconditions(60°F
ambientwaterandairtemperatures). Toassuremaximumcombustionefficiency
at colder temperatures and higher altitudes, it will be necessary to adjust the air
supply to the combustion chamber. A smoke spot test is recommended during
any air shutter adjustment. This will aid in maximizing the burner efficiency and
avoid the inefficient operation and excessive
sooting of the combustion chamber.
1. The machine must be running and the burner on.
2. Take a smoke spot test to determine if more or less air is
required for proper combustion.
a. If the test is greater than a #3 smoke, turn the shutter arm
counterclockwise to increase the air flow into the combustion
chamber.
b. If the test is yellowish in color, turn the shutter arm clockwise
to decrease the air flow into the combustion chamber.
3. Hold onto the air shutter adjusting arm and loosen the locking nut.
Move the shutter in 1/8" increments and retighten the locking nut after
each 1/8" movement.
4. Trigger the gun on and off slowly to make sure there is proper ignition.
Slightorno puffing onthe ignition, and asmoke spot testof0-3 is good.
5. Repeat steps 2 and 3 until step 4 is attained.
LEAKS: Promptly eliminate any leaks found in the pumping system by removing
suspect parts, applying thread sealant to the threads and reinstalling.
NOTE: If using teflon tape, be certain no tape gets inside any plumbing to prevent
the possibility of a plugged spray nozzle.
DANGER
RISK OF INJECTION CAUSING
SEVERE INJURY!
-AUTO START/STOP FEATURE
WILL SHUTDOWN THE
PRESSURE WASHER UNTIL THE
GUN IS TRIGGERED. TOTAL
SHUTDOWN REQUIRES "OFF/
PUMP/BURNER/STEAM"SWITCH
TO BE MOVED TO THE OFF
POSITION.
-TO PREVENT ACCIDENTAL HIGH
PRESSUREDISCHARGE,DONOT
LEAVEUNITUNATTENDEDUNTIL
"OFF/PUMP/BURNER/STEAM"
SWITCHISINTHEOFFPOSITION.