Mi-T-M WCU Series User manual

OPERATORS MANUAL FOR Mi-T-M®
WCU SERIES
Undercarriage Wash System
CAUTION
RISK OF INJURY!
READ MANUAL BEFORE OPERATING!
This manual is an important part of the Undercarriage Wash System and must re-
main with the unit when you sell it!
©Copyright 2021, Mi-T-M Corporation® 37-1498-022521

2 Mi-T-M®Undercarriage Wash System Operator's Manual
TABLE OF CONTENTS
INTRODUCTION .............................................................................................................3
CONTENTS OF THE UNDERCARRIAGE WASH SYSTEM ...........................................4
SPECIFICATIONS............................................................................................................4
IMPORTANT SAFETY WARNINGS.................................................................................5
UNDERCARRIAGE WASH SYSTEM FEATURES ..........................................................8
INSTALLATION................................................................................................................9
PLUMBING CONNECTIONS: ..................................................................................................................10
ELECTRICAL CONNECTIONS:................................................................................................................11
PRE-OPERATION CHECKLIST................................................................................................................13
OPERATION ..................................................................................................................14
FILLING AND PRIMING SYSTEM............................................................................................................14
OPERATION GUIDELINES.......................................................................................................................14
START-UP: ...............................................................................................................................................15
OPERATION:............................................................................................................................................15
WINTERIZING .........................................................................................................................................15
TROUBLESHOOTING ...................................................................................................16
STATEMENT OF WARRANTY ......................................................................................18
WARNING: This product can expose you to
chemicals including carbon monoxide, which is
known to the State of California to cause birth
defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
WARNING
WARNING: This product can expose you to
chemicals including Lead, which is known to
the State of California to cause cancer and birth
defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
WARNING

Mi-T-MUndercarriage Wash System Operator's Manual 3
Congratulations on the purchase of your new Mi-T-M Undercarriage Wash System. The system is designed to wash
and rinse the undersides of vehicles or equipment before or after primary cleaning to remove dirt, grime and road
salts from these hard to reach areas.
Mi-T-M Undercarriage Wash System can be used in a variety of environments, including:
Rental Yards
Heavy Equipment Dealers
Trucking Facilities
Military Bases
Truck Rental Fleets
Forklift Washing Operations
Aircraft Maintenance & Restoration
Shipyards
Mining Operations
The information in this operator's manual was compiled for your benet. 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 Undercarriage Wash System. 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, specications 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 UNDERCARRIAGE WASH SYSTEM. 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 SYMBOL SET BELOW THIS PARAGRAPH IS A "SAFETY ALERT SYMBOL". THIS SYMBOL IS 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 UNDERCARRIAGE WASH SYSTEM 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, le 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.
CALL OUR TOLL-FREE NUMBER
800-553-9053
for the Sales or Service Center nearest you! Please have the following information available for all service calls:
1. Model Number
2. Serial Number
3. Date and Place of Purchase
INTRODUCTION

4 Mi-T-M®Undercarriage Wash System Operator's Manual
SPECIFICATIONS
CONTENTS OF THE UNDERCARRIAGE WASH SYSTEM
Carefully unpack your new Mi-T-M Undercarriage Wash System. Contact the freight line if a damage claim is re-
quired on any component. The following items are the basic equipment sent with your Undercarriage Wash System.
1. Pump Skid
2. Remote Control Box and Photo-eye
3. Holding Tank
4. 2” Supply Jumper Hose- 5’ Long
5. Spray Bar
6. Spray Bar Cover
7. Manual and Parts List
MODEL# WCU-35-0ME1 WCU-35-0ME3
FLOW (GPM) 35
PSI 110
HORSEPOWER 3
VOLTAGE 230 208-230
AMPERAGE 15 10
HZ 60
PHASE 1 3
OPTIONS N/A WX-0144 (460V 3PHASE- 5 AMPS)
PUMP SKID DIMENSIONS 42"L X 20"W X 40"H
HOLDING TANK VOLUME 250 GALLONS
HOLDING TANK SIZE 36"DIAMETER X 62"TALL
SPRAY BAR 94"L, 1-1/2" STAINLESS SQ. TUBING, 1"FPT CONNECTION
SPRAY BAR COVER 100"L X 6"W X 1/2"H STEEL PLATE
SPRAY BAR NOZZLES (16X) 25 DEGREE SIZE 15
SHIPPING WEIGHT 450LBS

Mi-T-MUndercarriage Wash System Operator's Manual 5
IMPORTANT SAFETY WARNINGS
WARNING: When using this product, basic precautions should always be observed, including the following:
READ ALL SAFETY WARNINGS BEFORE USING YOUR Mi-T-M UNDERCARRIAGE WASH SYSTEM
POTENTIAL CONSEQUENCE PREVENTION
Serious injury or death could
occur if the Undercarriage Wash
System is not properly grounded.
Your Undercarriage Wash System
is powered by electricity and may
cause electric shock or electrocu-
tion if not installed properly.
Electrical shock may occur if the
Undercarriage Wash System is
not operated properly.
Serious injury or death may occur
if electrical repairs are attempted
by unqualied persons.
Installation of this unit, including all electri-
cal connections, must comply with all local,
state and national codes.
This product must be grounded. Connect
to a GFCI circuit breaker when available. If
the unit should malfunction or breakdown,
grounding provides a path of least resis-
tance for electric current to reduce the risk
of electric shock. Do not ground to a gas
supply line.
Improper connection of the equip-
ment-grounding conductor can result in a
risk of electrocution. Check with a qualied
electrician or service personnel if you are in
doubt as to whether the system is properly
grounded.
Always be certain the unit is receiving prop-
er voltage (+/- 5% of the voltage listed on
the nameplate). Before installing electrical
connections, be certain the power switches
are in the "OFF" position.
Keep all connections dry.
DO NOT spray on or into electrical instal-
lations of any kind! This includes electrical
outlets, light bulbs, fuse boxes, transform-
ers, the Undercarriage Wash System itself,
etc..
DO NOT allow metal components of the
Undercarriage Wash System to come in
contact with live electrical components.
Never operate the Undercarriage Wash
System with safety guards/covers removed
or damaged. Ensure all electrical covers are
securely in place when unit is operating.
Any electrical wiring or repairs performed
on this Undercarriage Wash System should
be done by Authorized Service Personnel in
accordance with National and Local electri-
cal codes.
Before opening any electrical enclosure, al-
ways shut off the Undercarriage Wash Sys-
tem. Disconnect the Undercarriage Wash
System from the power source. If the power
disconnect is not in sight, lock it in the open
position and tag it to prevent power usage.
(Never assume the Undercarriage Wash
System is safe to work on just because it is
not operating! Always disconnect from the
power source.)
RISK OF ELECTRIC SHOCK
OR ELECTROCUTION
HAZARD

6 Mi-T-M®Undercarriage Wash System Operator's Manual
Never allow any part of your body to con-
tact the electrical motor until cooled.
POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY WARNINGS
RISK OF EXPLOSION OR FIRE Serious injury or death could
occur from an explosion or re
caused by a system electric
spark.
This unit must be placed in an area that is
well ventilated, free of ammable vapors,
combustible dust, gases or other combusti-
ble materials.
HAZARD
RISK OF BURNS
Serious injury may occur to the
operator from moving parts on the
Undercarriage Wash System.
Do not operate the unit without all protec-
tive covers in place.
Follow the maintenance instructions speci-
ed in the manual.
RISK FROM MOVING PARTS
Serious injury may occur from
touching the electrical motor.
This area can remain hot for
some time after the Undercar-
riage Wash System is shut-
down.
RISK OF BURSTING Serious injury or death could
occur from bursting caused by ex-
cessive pressure in the system.
Serious injury may occur if
attempting to start the Under-
carriage Wash System when the
pump is frozen.
Do not use this Undercarriage Wash System
to pump ammable material! An explosion
could occur.
In freezing temperatures, the unit must be
protected from freezing. Do not start the
Undercarriage Wash System if it has been in
a freezing environment without rst allowing
the pump to thaw.

Mi-T-MUndercarriage Wash System Operator's Manual 7
POTENTIAL CONSEQUENCE PREVENTION
IMPORTANT SAFETY WARNINGS
Serious injury or death could oc-
cur from water spray penetrating
the skin.
Keep clear of nozzle and spray! Never put
your hand, ngers or body directly over the
spray nozzle.
Never point the discharge spray at yourself
or anyone else.
Always keep operating area clear of all
persons.
SEEK EMERGENCY MEDICAL CARE if the
spray appears to have penetrated the skin!
DO NOT TREAT AS A SIMPLE CUT!!
Hoses should be inspected daily for signs of
wear. If evidence of failure exists, prompt-
ly replace all suspect hoses to prevent the
possibility of injury from the spray. If a hose
or tting is leaking, NEVER PLACE YOUR
HAND DIRECTLY ON THE LEAK.
Before removing the spray nozzle or servic-
ing the unit, ALWAYS shut off the unit and
release trapped pressure. (Even after you
shut off the unit, there is pressurized water
left in the pump and hose until you release it).
RISK OF BODILY INJURY Do not start or operate the unit until an op-
erator is securely bracing the spray nozzle.
ALWAYS wear protective goggles when
operating the Undercarriage Wash System
to shield the eyes from ying debris.
DO NOT direct spray toward fragile materi-
als such as glass. Shattering could occur.
Stay alert-watch what you are doing. Do
not operate the unit when fatigued or under
the inuence of alcohol or drugs.
NEVER open the water nozzle unless se-
curely braced.
DO NOT overreach or stand on unstable
support.
Wet surfaces can be slippery, wear protec-
tive foot gear and keep good footing and
balance at all times.
NEVER open the water nozzle while on a
ladder or roof.
Do not direct spray at people or pets. The
force of the water can knock a person
down.
DO NOT DRINK THE WATER IN THE
Undercarriage Wash System!! This is
non-potable water and is not suitable for
consumption.
DO NOT allow children to operate this unit.
Know how to stop the Undercarriage Wash
System quickly. Be thoroughly familiar with
controls.
DO NOT leave the Undercarriage Wash
System unattended. Shut off the Undercar-
riage Wash System before leaving.
Serious injury or death may occur
from the contact force of an un-
controlled water nozzle.
Serious injury can occur from
loose debris being propelled at a
high speed from the water nozzle.
Injury may occur if the operator
loses his balance caused by the
thrust of water traveling through
the water nozzle.
Injury may occur from the Under-
carriage Wash System.
RISK OF INJECTION OR
SEVERE CUTTING INJURY
!SAVE THESE INSTRUCTIONS!
HAZARD

8 Mi-T-M®Undercarriage Wash System Operator's Manual
UNDERCARRIAGE WASH SYSTEM FEATURES
WCU FEATURES 020121
1 Water Supply Connection
2 Tank Drain Plug
3 Pump Supply Hose
4 Power On Switch
5 Control Panel
6 Pressure Gauge
7 Solenoid Valve
8 Spray Bar Cover
9 Spray Bar
10 Nozzles
11 Selector Switch Remote
12 Photo-Eye
13 Multistage Pump
14 Priming Plug
15 Tank Shut-Off Valve
16 Product Tank
16
1412
11 13
67
15
1
2
3
5
4
10
9
8

Mi-T-MUndercarriage Wash System Operator's Manual 9
INSTALLATION
INSTALLATION:
1. Place pump skid and holding tank on level concrete surface in an enclosed
area preferably with oor drain. Place holding tank within a few feet of pump
close enough to allow 5’ supply hose to reach. Level pump as needed with
feet levelers and anchor to concrete if desired. Do not allow pump or tank to
be exposed to freezing temperatures.
2. Place spray bar inside concrete trench, nozzles about 1” below the concrete
surface. Level and Anchor into place- allow enough room for connection hose
or piping to connect to spray bar. Do not allow spray bar to be exposed to
freezing temperatures.
NOTE: Trench will accumulate water and dirt so a drain line needs to be
installed to wash bay main trench or drain line.
Figure 1: Spray Bar dimensions and nozzle spacing
Figure 2: Cover dimensions
Figure 3: Trench minimum dimensions for spray bar and cover installation.
3. Place Cover over spray bar on lip of concrete trench. Center slots over nozzles.
4. Install selector switch remote box and photo-eye to wash-bay wall in front of
undercarriage trench. Photo-eye will reach a maximum of 10’, so it needs to
be placed within this distance of the equipment or vehicles moving by. Place
far enough in front spray bar to avoid water spraying photo-eye or remote
box at least 10 ft. is recommended.
DANGER RISK OF UNIT
BURSTING! DO NOT
STORE/OPERATE
UNIT IN FREEZING
ENVIRONMENTS!
0
3/4
93 1/4
(94)
6 TYP.
SPRAY BAR DIMENSIONS
 1 X 3.000 LONG SLOT
(16) PLACES
0
4
8
0 5
11 17 23 29 35 41 47 53 59 65 71 77 83 89 95
100
SPRAY BAR COVER DIMENSIONS
1 1/16
6
8 1/8
1/2
TRENCH MINIMU
M
DIMENSIONS

10 Mi-T-M®Undercarriage Wash System Operator's Manual
Figure 4: example wash-bay layout
PLUMBING CONNECTIONS:
1. Water supply line: Connect ¾” garden hose (not provided) from water supply line to the female garden hose
tting provided on top of holding tank.
2. Suction line: Connect tank and pump and the 2” water supply hose using the cam and groove connectors.
3. Discharge line: Run 1-1/2” pipe or hose from outlet of spray system to the undercarriage trench and spray
bar connection. Reduce down at the spray bar to meet the 1” FPT connection. (Pipe/hose must be rated for
minimum 200PSI).
INSTALLATION