ALKOTA E320 User manual

MODEL E320 (GENERAL), E320A (AR)
SPECIFICATIONS
05-31-05 Z08-02372S
MACHINE SPECIFICATIONS
PERFORMANCE
DISCHARGE VOLUME........................................2.8 GPM / 10.6 LPM
PUMP HEAD PRESSURE....................................2000 PSI / 138 BAR
GENERAL
MINIMUM INLET WATER PRESSURE..................40 PSI / 0.68 BAR
WEIGHT (DRY) .........................................................110 LBS / 50 KG
SPRAY TIP.........................................(#4.5-15DEG) P/N J00-15045-2
SPRAY TIP..........................................(#20-15DEG) P/N J00-15200-2
HOSE, DISCHARGE..............................3/8” X 50’ P/N K02-03150E1
WAND & TRIGGER GUN.......................................... P/N E320-00701
TRIGGER GUN ............................................................ P/N J06-00121
ELECTRICAL
VOLTAGE .................................................................. 230V 1PH 60HZ
CURRENT ................................. 208V - 17.8 AMP / 230V - 16.6 AMP
CAM SWITCH ............................................................P/N F04-00735A
POWER CORDSET .................................................. P/N F04-00103A
PUMP & UNLOADER
PUMP - AR .................................................................. P/N N09-00016
PUMP - GENERAL ..................................................... P/N N07-00053
WATER FILTER .......................................................... P/N C04-00121
UNLOADER.............................................................. P/N C07-04200B
PUMP MOTOR
MOTOR HORSEPOWER........................................... 4.0 HP / 2.9 KW
MOTOR VOLTAGE .......................................... 208V/230V 60HZ 1PH
MOTOR ................................................................. P/N F02-00098-UC
ENGINEPULLEY........................................................P/NR03-00530
MOTOR BUSHING.................................................. P/N R04-00007-H
Supersedes03-27-05Z08-02372S

MACHINE RECORD
01-08-04 Z08-04527
ECN-03022
SERIAL NUMBER
DATE OF PURCHASE
PLACE OF PURCHASE
NOTES:
MAINTENANCE RECORD

OPERATION TABLE OF CONTENTS
ELECTRIC DRIVEN COLD WATER
01-16-04 Z08-04002
SAFETY INSTRUCTIONS
Page Number
•Safety Symbols 3
•General 3
•Mechanical 4
•Electrical 4
INSTALLATION
•Barrier 4
•Water Supply 4
•Water Conditions 4
•Freezing 4
•Chemicals 4
•Electrical 5
•Extension Cord 5
OPERATION
• Pre Start-Up 5
• Start-Up 5
• Shut Down 6
MAINTENANCE
Machine
•Flushing 7
•Storage 7
•Belt Deflection 7
•Schedule 8
TROUBLESHOOTING
Page Number
•Machine 9, 10
•Pump See Parts List Section
SERVICE
• Machine 5
• Pump See Parts Lists Section
• Unloader See Parts Lists Section
•Trigger Gun See Parts List Section
• Chemical Metering Valve
See Parts Lists Section
COMPONENT ADJUSTMENT
CHEMICAL METRING
•Flow Adjustment See Parts List Section
UNLOADER
•Pressure Adjustment See Parts List Section
WARRANTY Inside Back Cover
2
OPERATION - TABLE OF CONTENTS

SAFETY, INSTALLATION, AND OPERATION
ELECTRIC DRIVEN COLD WATER CLEANER
11-21-03 Z08-00481
ECN-03022 Supersedes 02-12-01 Z08-00481
MACHINE UNPACKING
ALL CLEANERS ARE CAREFULLY INSPECTED
AND CARTONED TO PROTECT AGAINST SHIPPING
DAMAGE. IF THERE IS DAMAGE OR MISSING
PARTS, THE TRANSPORTATION COMPANY
AGENT SHOULD MAKE A NOTATION TO THAT
EFFECT ON THE BILL. REFER TO THE PARTS
LIST IN THIS MANUAL AND ADVISE WHAT PARTS
ARE MISSING OR DAMAGED. IF AVAILABLE,
GIVE THE INVOICE NUMBER ON ALL ORDER
BILLS. THIS PROCEDURE WILL ENABLE
NEEDED PARTS TO BE SHIPPED QUICKLY.
READ ALL Installation, Operation, and
Maintenance instructions before operating the
machine
NOTE: Refer to CLEANER MODEL for SERIAL
NUMBER location
NOTE: Dimensions are in inches unless otherwise
noted
IMPORTANT SAFETY
INSTRUCTIONS
The safety alert symbol.
This symbol is used to identify safety information
about hazards that can result in personal injury.
A signal word (DANGER, WARNING, or CAUTION)
is used with the alert symbol to indicate the
likelihood and the potential severity of injury. In
addition, a hazard symbol may be used to represent
the type of hazard
DANGER indicates a hazard which, if not
avoided, will result in death or serious
injury.
WARNING indicates a hazard which, if not
avoided, could result in death or serious injury.
CAUTION indicates a hazard which, if not
avoided, might result in minor or moderate
injury.
CAUTION, when used without the alert
symbol, indicates a situation that could result in
damage to the equipment.
GENERAL SAFETY
1. Before operating this machine, read and observe
all safety, unpacking, and operating
instructions. Failure to comply with these
instructions could create a hazardous
situation.
2. The operator of this equipment should not
operate this equipment when fatigued or under
influence of alcohol or drugs.
3. The operator of this equipment should be
thoroughly familiar with its operation and
trained in the job to be accomplished.
4. The operator of this equipment should wear
protective face shields and other protective
clothing as required for safe operation.
5. Keep all protective covers and shields in place.
Operating this machine with moving parts
could allow operator or bystander serious injury
or even death.
6. Do not operate the machine if any mechanical
failure is noted or suspected.Keep all shields
in place.
7. Do not leave this machine unattended when it
is operating.
8. All installations must conform to all applicable
local codes. Contact your electrician, plumber,
utility company or seller for details.
9. If a water leak is found, DO NOT OPERATE
THE MACHINE. Shut off the machine and
repair.
10. Follow instructions on how to stop the machine
and bleed pressures quickly. Be thoroughly
familiar with the controls.
11. When starting a job, survey the area for
possible hazards and correct before proceeding.
12. If chemicals are used in conjunction with this
equipment, read and follow the product label
directions.
14. Do not start the machine unless the gun
assembly is firmly gripped by the machine
operator. Failure to do this could result in
injury from a flying hose and gun assembly.
3

11-21-03 Z08-00481A
15.Always point the gun assembly in a safe
direction and do not direct spray on the cleaner
or personnel in the area.
MECHANICAL SAFETY
1. All guards, shields, and covers must be replaced
after adjustments are made to prevent
accidental contact with hazardous parts.
2. Drive belts must be inspected and tightened
periodically to operate at optimum levels.
3. Inspect machine for damaged or worn
components and repair or replace to avoid
potential hazards. Do not operate the machine
if any mechanical failure is noted or suspected.
4. Always use the correct size spray tip found in
the GENERAL section of the MODEL
SPECIFICATIONS or MODEL EXPLODED
VIEW.
5. DO NOT start the machine until you have
observed all safety and operating instructions
found in the engine manual..
ELECTRICAL SAFETY
1. This machine must be electrically grounded.
Failure to have the machine grounded may
result in the operator being electrically shocked
and even death.
2. Do not plug–in or un–plug machine with wet
hands.
3. Keep power cords and connections (connectors)
out of water.
4. If an extension cord must be used to operate
this machine, it should be as short as possible.
The extension cord must be properly sized and
fitted with a grounding type plug and
receptacle.
5. All wiring and electrical connections should
comply with the National Electrical Code (NEC)
and with local codes and practices.
6. Fuses or circuit breakers should be compatible
with machine requirements. (See ELECTRICAL
section of MODEL SPECIFICATIONS for power
requirements.)
7. High voltage may be present within this machine.
Servicing should only be performed by properly
trained personnel.
SAVE THESE SAFETY
INSTRUCTIONS
INSTALLATION
1. BARRIER: We recommend a barrier be installed
between the machine and wash area to prevent
moisture from coming in direct contact with
electrical controls and engine. This will increase
the machine’s life and lessen electrical
problems.
2. WATER SUPPLY: This machine must have a
water supply meeting or exceeding the
maximum discharge volume specified in the
machine specifications, and a minimum water
inlet pressure of 40PSI / 12.1KGM.
3. WATER CONDITIONS: Local water conditions
affect the coil adversely more than any other
element. In areas where troublesome conditions
may exist with like equipment (such as water
heaters), we recommend the use of a water
softener.
4. FREEZING: This machine must be protected
from freezing according to STORAGE section
of MACHINE MAINTENANCE.
5. CHEMICALS: Mix chemicals per the chemical
manufacturers printed directions. Follow all
mixing, handling, application, and disposal
instructions. Wear gloves, boots, goggles, and
protective clothing appropriate for the chemical
being used
4
WARNING: RISK OF INJECTION OR
SEVERE INJURY. KEEP CLEAR OF
NOZZLE. DO NOT DIRECT DISCHARGE
STREAM AT PERSONS. THIS EQUIPMENT
IS TO BE USED ONLY BY TRAINED
OPERATORS.
AVERTISSEMENT:RISQUE
D’INJECTION ET DE BLESSURES GRAVES.
SE TENIR À L’ÉCART DU JET. NE PAS
DIRIGER LE JET DE SOTIE VERS D’AUTRES
PERSONNES CONFIER L’UTILISATION LE
JET DE SOTIE VERS D’AUTRES
PERSONNES. CONFIER L’UTILISATION DE
CE MATÉRIEL À UN OPÉRATEUR QUALIFIÉ.
ECN-03022Supersedes 02-12-01 Z08-00481A

11-21-03 Z08-00481B
ELECTRICAL INSTALLATION
1.ELECTRICAL: Connect machine to an
electrically grounded circuit that is fused or
circuit breaker protected. The circuit must match
that specified in the ELECTRICAL section under
MODEL SPECIFICATIONS.
CHART FIGURES ARE BASED ON NOT
MORE THAN 100 FOOT
(Based on Ambient Temperature of 86°F (30°C)).
*Use Amp Draw indicated the same or higher than
your machine output
EXAMPLE: Machine Amp Draw 51, use 55 (2
Conductor). The thermostat type of cord shall be
C, PD, E, EO, EN, S, SO, SRD, SJ, SJO, SV, SVO,
SP.
The thermoset plastic types shall be ET, ETT, ETLB,
ETP, ST, STO, SRDT, SJT, SJTO, SVT, SVTO, and
SPT.
2. EXTENSION CORD: The use of an extension
cord that has undersize wire compared to the
amp draw of your machine will adversely limit
the starting load carrying abilities of the motor
and machines performance. Use only 3-wire
extension cords that have 3-prong plugs and
3-pole cord connectors that accept the plug
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 cords having an electrical rating not
less than the rating of the product. Do not use
damaged extension cords. Use an extension
cord in good repair free of frays or cracks in
the outer covering. Do not abuse extension
cord and do not yank on any cord to disconnect.
Keep cord away from heat and sharp edges.
Always disconnect the extension cord from the
receptacle before disconnecting the product
from the extension cord.
WARNING: To reduce the risk of electrocution,
keep all connections dry and off the ground.
Do not touch plug with wet hands
OPERATING
INSTRUCTIONS
PRE START-UP
1. The first time the machine is operated, after
repairs have been made, or if the machine has
set for a period of time (30 days or more) follow
the following procedures.
A. Check the tension of the belt (if so
equipped) per instructions in MACHINE
MAINTENANCE.
B. Flush the machine per instructions in
MACHINE MAINTENANCE.
C. Install float tank drain plug (if so equipped).
D. Open float tank ball valve (if so equipped).
♦CAUTION: Always use the factory supplied
pressure wash hose with your machine.
♦DO NOT substitute any other hoses as a
potential safety problem may develop.
¨CAUTION: If machine has been exposed to
sub-freezing temperatures, it must be
thoroughly warmed to above freezing before
operating. Failure to warm machine can cause
damage to the pump packings and other
components.
2. Read and observe all items in “CLEANER
INSTALLATION”.
START-UP
♦Refer to the MAINTENANCE SCHEDULE for
any maintenance to be performed before
operation.
5
ECN-03022Supersedes 02-12-01 Z08-00481B
WARNING: ELECTRICAL SHOCK
HAZARD
COPPER
WIRE SIZE
MINIMUM
AWG
MACHINE AMP
DRAW*
3 CONDUCTOR
WIRES
MACHINE AMP
DRAW*
2 CONDUCTOR
WIRES
16 10 13
15 -- --
14 15 18
12 20 25
10 25 30
835 40
645 55
460 70
280 95

♦ELECTRICAL: Connect the machine to an
electrically grounded circuit that is fuse or
circuit breaker protected. Do not use any type
of adapter. If the correct type of receptacle is
not available, have one installed by a qualified
electrician.
♦OIL LEVEL: Check the oil level in the water
pump.
♦BELT (if so equipped): Make sure the belt
tension and condition is as specified in
MACHINE MAINTENANCE.
♦METERING VALVE (if so equipped): Make sure
the metering valve is closed before
operation. If air enters the system through this
valve, poor performance and machine damage
will occur. Refer to the metering valve insert
for proper operation.
♦WATER SUPPLY: This machine must have a
water supply meeting or exceeding the
maximum discharge volume specified in the
machine specifications, and a minimum water
inlet pressure of 40PSI / 12.1KGM.
♦LIME: Water containing large amounts of lime,
calcium or other similar materials can produce
a coating on the inside of the impact nozzle or
spray tip and coil pipe.
♦FLOAT TANK: Check the float tank (if so
equipped) to assure it is full and the float
tank valve shuts off securely.
♦BALL VALVE: Check the position of the ball
valve (if so equipped) on outlet line of the float
tank assuring that it is in the open position.
1. GUN ASSEMBLY IN HAND: (on trigger gun
models hold the trigger gun valve in open
position) and with a good flow of water turn
the switch to pump position.
CAUTION: A good flow of water must be Flowing
from the end of a gun for 30 seconds, before
proceeding. Lack of water can cause damage to
the water pump and like components.
CAUTION: On a machine equipped with a
trigger gun valve, if the trigger gun valve
remains in the closed position
for more than 3 minutes, water pump damage
may occur.
2. To CLEAN:
A. Start on the lower portion of the area to be
cleaned and work up using long, even,
overlapping strokes.
B. Dirt is generally removed easily if grease
and/or oil is not present. However if grease
and/or oil are present, hot water and
chemical will accelerate in the cleaning
process.
3. TO APPLY CHEMICAL:
CHEMICAL: Use factory recommended
chemicals for best cleaning action and for
extended pump life. Contact your dealer for
chemicals available. Follow instructions on
chemical container.
Mix chemicals per label instructions. Use
necessary safety precautions.
A. Insert chemical screen into chemical
container
B. Adjust metering valve (if so equipped).
C. If the gun assembly is equipped with
variable or multiple nozzle assembly,
adjust as desire.
4. TO RINSE:
A. If the machine is equipped with a panel
mounted metering valve, close the chemical
metering valve (if so equipped). NOTE: It is
advisable to dip the chemical screen in a
container of clean water and open the valve
1 minute to clean the valve of any remaining
residue.
B. If the gun assembly is equipped with
variable or multiple nozzle assembly, open
and close to clean nozzle of any remaining
residue.
C. After a clear flow of water is noted from the
end of the wand, start from the top, working
downward using long, overlapping
strokes.
SHUT-DOWN
1. Turn the pump switch to the off position.
2. Turn off the water supply.
4. If freezing conditions may exist, refer to
STORAGE in MACHINE MAINTENANCE.
11-21-03 Z08-00481C
6
ECN-03022 Supersedes 02-12-01 Z08-00481C

MACHINE MAINTENANCE
ELECTRIC DRIVEN COLD WATER CLEANER
FLUSHING
1. Connect machine to an electrically grounded
circuit that is fuse or circuit breaker
protected.
2. Connect machine to a pressurized water supply
meeting the requirements specified in the
GENERAL section of the MODEL
SPECIFICATIONS.
3. Turn on the water supply.
4. Check the float tank (if so equipped) to assure
it is full and the float valve shuts off securely.
5. Check the position of the ball valve (if so
equipped) on outlet line of the float tank
assuring it is in the open position.
6. Remove spray tip from gun assembly.
7. With gun assembly in hand, turn on the pump
switch. On trigger gun models hold the trigger
gun valve in open position.
CAUTION: DO NOT RUN PUMP WITHOUT
WATER, AS THIS WILL CAUSE DAMAGE TO
THE PUMP AND VOID WARRANTY.
8. When clean water flows from gun, turn off the
switch.
9. Reinstall spray tip.
10. With gun assembly in hand, turn on the switch.
On trigger gun models hold the trigger gun valve
in open position.
11. When clean water flows from gun, turn off the
pump switch.
12. If freezing conditions may exist, refer to
“STORAGE” section.
13. Turn off and disconnect the water supply.
Disconnect electrical supply.
STORAGE
1. Rinse the Soap Line by inserting the screen into
a container of clear water and open the metering
valve 1 minute to clean it of any remaining
residue. Be sure the chemical metering valve
is closed when finished.
2. Disconnect the water supply.
3. Remove the spray tip nozzle from gun
assembly and wire to machine.
4. Check the position of the ball valve (if so
equipped) on the outlet of the float tank
assuring it is in the closed position.
5. Attach an air chuck to the air valve stem on the
pump assembly. With the trigger gun in the open
position, apply air until a mixture of air and
very little water is coming from the gun wand
6. Fill a 1-gallon container with Ethylene Glycol
type antifreeze. Minimum should be a mixture
of ½ antifreeze and ½ water strength before each
use, as the antifreeze will dilute with each use.
7. Install a 2-ft. Garden hose to the water inlet.
Insert the other end into a container of
antifreeze solution.
8. With the discharge gun assembly in hand, turn
on the switch. On trigger gun models hold the
trigger gun valve in open position.
9. Turn off the switch just prior to running out of
antifreeze mixture.
10. Disconnect electrical supply.
11. Disconnect gun and hose.
12. Place machine in a dry place protected from
weather conditions.
SPRAY TIP
1. Remove the spray tip from the gun assembly.
2. Blow out debris with compressed air from the
outside in. Any debris remaining in the inlet
side of the nozzle should be cleaned out. If lime
or chemical scale is present in the inlet side,
the nozzle may be soaked in descaling solution
or replaced. If the tip is worn, replace with one
specified in the GENERAL section of MODEL
SPECIFICATIONS or MODEL EXPLODED
VIEW.
3. Before replacing spray tip flush the machine per
“FLUSHING”.
4. Reinstall Spray tip to gun assembly.
BELT TENSION
DEFLECTION
SPAN
1. Correct belt tension will allow a 1/64-inch
deflection for each inch of span between pulley
centers with a 6-pound force applied in the
middle of the span.
EXAMPLE: A 6-pound force applied at the
middle of an 8 inch span should produce a
deflection of 8/64 inch or 1/8 inch.
2. Belts can be tightened or loosened by loosening
the nuts holding the pump assembly to the
motor mount. Then tighten or loosen the j-bolt
on the motor mount. Retighten the pump
assembly after the desired tension is reached.
11-21-03 Z08-02783
ECN-03022 Supersedes 02-16-01 Z08-02783 7

ELECTRIC DRIVEN COLD
WATER CLEANERS DAILY
EACH
HR
FIRST
8 HRS
AFTER
FIRST
50
HRS
EVERY
50
HRS
EVERY
100
HRS
EVERY
500
HRS
YEARLY
OIL BATH WATER PUMP:
Oil Level – check and add as needed per
PUMP SERVICE insert.
Oil Change – drain and refill per PUMP
SERVICE insert. CAUTION: Used oil must
be disposed into an environment safe
container and brought to an oil recycling
center.
Oil Contamination – Milky color indicates
water
HOSES:
Blistering, Loose Covering
Abrasion of cover exposing
reinforcement.
Cuts exposing reinforcement
BELTS:
Cracks or fraying
Belt Tension - For correct belt tension,
see MACHINE MAINTENANCE insert.
SPRAY TIP:
Check Tip for debris.
PUMP MOTORS WITH GREASE
FITTINGS:
Remove Drain Plug. Use 1 or 2 full
strokes of Shell "DOLIUM R", Chevron
"SR1 No. 2" or Texaco "PREMIUM RB".
operate 20 minutes and replace drain
plug.
SCREEN—WATER:
Check Inlet Hose Screen for debris .
Check Float Tank Hose Screen (if so
equipped)for debris .
Check Water Filter (if so equipped)for debris
see breakdown elsewhere in this manual.
GUARDS AND SHIELDS:
Check That All Guards and shields are in
place and secure.
FREEZING TEMPERATURES:
Freezing Temperatures Break water pumps
and like components. See STORAGE tn the
MACHINE MAINTENACE section for cold
weather instructions.
MACHINE MAINTENANCE
11-21-03 Z08-02767
ECN-03022 Supersedes 02-16-01 Z08-02767 8

TROUBLE POSSIBLE CAUSE REMEDY
1. Poor Cleaning
Action.
A. Hard water.
B. Low Pressure.
C. Little or no chemical being
drawn.
D. Improper chemical.
E. Improper chemical mixture.
F. Low Discharge Pressure.
A. Connect machine to water softener.
B. See "Low operating pressure"
C. See "Machine will not draw chemical".
D. Obtain proper chemical.
E. Mix chemicals per the label. Follow all
mixing, handling, application, and disposal
instructions.
F. See "Low operating pressure"
2. Machine will
not draw
chemical.
A. No chemical solution.
B. Metering valve not open.
C. Chemical line strainer
clogged.Air leak in chemical line.
D. Metering valve clogged.
E. Restrictor orifice too large or
missing.
A. Replenish supply.
B. Turn metering valve knob to open.
C. Remove screen and clean.
D. Tighten all fittings and hoses for the
chemical line.
E. Disassemble and clean. Install proper size
orifice.
3. Low operating
pressure
A. Insufficient water supply.
B. Incoming water hose too small.
C. Water supply hose too long.
D. Belt slippage.
E. Worn Belt.
F. Spray tip worn or wrong size.
G. Dirty or worn check valves in
water pump.
H. Water supply hose kinked.
I. Inlet filter screen clogged.
J. Motor runs slow.
K. Air leak in inlet plumbing.
L. Defective water pump.
M. Leaking discharge hose.
N. Chemical metering valve open
and sucking air.
O. Defective unloader valve.
P. Inlet ball valve not fully open (if
so equipped)
A. The water supply must meet or exceed the
maximum discharge volume specified in
the PERFORMANCE section, and
minimum water inlet pressure specified
in the GENERAL section of the MODEL
SPECIFCATIONS section.
B. Use larger water supply hose.
C. Use shorter water supply hose.
D. Tighten belt per instructions in
MACHINE MAINTENANCE insert.
E. Replace belt per CLEANER EXPLODED
VIEW.
F. Replace with spray tip specified in the
GENERAL section of MODEL
SPECIFICATIONS.
G. See PUMP TROUBLESHOOTING.
H. Straighten hose.
I. Clean water filter screen or hose inlet
screen.
J. See "Pump engine starts slow or overheats
and stops".
K. Tighten all fittings.
L. See PUMP TROUBLESHOOTING.
M. If a water leak is found, DO NOT
OPERATE THE MACHINE. Disconnect
the power and replace hose.
N. Resupply chemical, place soap screen in
water, or shut off metering valve.
O. Repair or replace unloader valve.
P. Open inlet ball valve completely.
(Handle parallel w/valve body).
ELECTRIC MOTOR DRIVEN COLD WATER CLEANERS
CLEANER TROUBLESHOOTING
Supersedes 08-09-02 Z08-02784 01-16-04 Z08-02784
9

TROUBLE POSSIBLE CAUSE REMEDY
4. Excessive,
unusual noise.
A. Defective Pump.
B. Defective motor.
C. Pulleys rubbing.
D. Misalignment of pump & motor
A. See PUMP TROUBLESHOOTING.
B.Call service technician or take engine to
Repair/Warranty station.
C. Adjust shields or pulley(s).
D. Realign pump and engine.
5. .Belts slipping. A. Belts too loose.
B. Excessive Back Pressure.
C. Defective Water Pump.
A. Tighten belt per instructions on
MACHINE MAINTENANCE.
B. See "Excessive Back Pressure" below.
C. See PUMP SERVICE.
6. Excessive Back
Pressure
A. Spray tip built up with lime.
B. Water pump turning too fast.
C. Coil built up with lime.
D. Relief valve defective.
A. Remove and clean, or replace spray tip
with tip specified in the GENERAL section
of MODEL SPECIFICATIONS. Flush
machine per FLUSHING in MACHINE
MAINTENANCE
B. See MODEL SPECIFICATIONS.
C. Delime coil.
D. Remove and replace.
7. Excessive
vibration.
A. Defective Belt.
B. Defective Pump.
C. Defective accumulator
A. Remove and replace using belt specified
in CLEANER EXPLODED VIEW or the
GENERAL section of MODEL
SPECIFICATIONS.
B. See PUMP TROUBLESHOOTING.
C. Recharge/Replace.
8. Pump motor
will not start
(motor does not
hum)
A. No Power.
B. Defective motor starter or
ON/OFF switch.
C. Defective motor.
A. Use a different outlet,check fuses in main
disconnect switch. Replace fuse if blown.
B. Call service technician.
C. Call service technician, or take motor to
Repair/Warranty station.
9. Pump motor
will not start
(motor hums)
A. Pump frozen.
B. Defective motor.
C. Defective water pump.
D. Excessive back pressure
A. Machine must be thoroughly warmed to
above freezing.
B. Call service technician or take motor to
Repair/Warranty station.
C. See PUMP SERVICE.
D. See "Excessive Back Pressure" above.
10. Pump motor
starts slow or
overheats and
stops.
A. Low voltage
B. Excessive back pressure
C. Defective motor
A. See "Low voltage" below.
B. See "Excessive Back Pressure" above.
C. Call service technician, or take motor to
Repair/Warranty station.
11. Pump motor
stops and will
not start.
A. Motor starter "kicked out" (if so
equipped) or thermal overload
tripped.
B. Excessive back pressure.
C. Defective motor.
A. Turn motor starter off to reset, then turn
on, or push thermal overload reset button
on motor.
B. See "Excessive Back Pressure". above.
C. Call service technician, or take motor to
Repair/Warranty station.
12. Low voltage A. Incoming voltage incorrect.
B. Not large enough extension cord.
C. Too long extension cord
A. Have a qualified technician check the
motor terminal voltage. Correct voltage is
in MODEL SPECIFICATIONS.
B. Use an extension cord with amperes or
watts rating as high or higher than that of
the MODEL SPECIFICATIONS.
C. Shorten extension cord.
13. Machine
shocks
operator
A. Machine improperly grounded.
B. Outlet not grounded
A. STOP! Operating machine. Call service
technician.
B. Have properly wired outlet installed.
01-16-04 Z08-02784ASupersedes 02-12-01 Z08-02784A
ELECTRIC MOTOR DRIVEN COLD WATER CLEANERS
CLEANER TROUBLESHOOTING (CONT.)
10

PUMP HEAD REINSTALLATION
PUMP HEAD REMOVAL
6
4
2
1
3
5
4
2
3
8
5
1
6
7

PUMP TROUBLESHOOTING
08-27-03 Z08-00195
ECN-02981 Supersedes 06-00 Z08-00195
TROUBLE POSSIBLE CAUSE REMEDY
1. Oil leaking in the
area of water pump
crankshaft.
A. Worn crankshaft seal.
B. Bad bearing.
C. Grooved shaft.
D. Failure of retainer o-ring
A. Remove and replace.
B. Remove and replace.
C. Remove and replace.
D. Remove and replace.
2. Excessive play on
crankshaft.
A. Defective bearings.
B. Excess shims.
A. See "Worn bearing".
B. Set up crankshaft.
3. Loud knocking in
pump.
A. Loose conecting rod screws.
B. Worn connecting rod.
C. Worn bearings.
D. Loose plunger bushing screw.
A. Tighten connecting rod screws per
PUMP SPECIFICATIONS.
B. Replace connecting rod per PUMP
MAINTENANCE.
C. Replace bearings per PUMP
MAINTENANCE.
D. Tighten plunger screw per PUMP
SPECIFICATOINS.
4. Oil leaking at the
rear portion of the
pump.
A. Damaged or improperly
installed oil gauge window
gasket.
B. Damaged or improperly
installed rear cover.
C. Oil gauge loosed.
D. Rear cover screws loose.
E. Pump overfilled with oil,
displaced through crankcase
breather hole in oil
cap/dipstick.
A. Replace gasket or o-ring.
B. Replace gasket or o-ring.
C. Tighten oil gauge.
D. Tighten rear screws. to torque
values in PUMP SPECIFCATIONS. S
E. Drain oil: refill to recommended oil
level as stated in OIL LEVEL in PUMP
MAINTENANCE.
5. Water in crankcase A. May be caused by humid air
condensing into water inside
the crankcase.
B. Worn or damaged plunger
screw o-ring.
A. Maintain or step up lubrication
schedule.
B. Remove and replace. See PLUNGER
SERVICE in PUMP MAINTENANCE.
6. Worn bearing A. Excessive belt tension.
B. Oil contamination.
A. See BELT TENSION in MACHINE
MAINTENANCE.
B. Check oil type and change intervals
per PUMP SPECIFICATIONS.
7. Short bearing life A. Excessive belt tension.
B. Misalignment between pump
and motor.
C. Oil has not been changed on
regular basis.
A. See BELT TENSION in MACHINE
MAINTENANCE.
B. Re-align pump and motor.
C. Check oil type and change intervals
per PUMP SPECIFICATIONS.
8. Short seal life A. Damaged plunger bushing.
B. Worn connecting rod.
C. Excess pressure beyond the
pump's maximum rating.
D. High water temperature.
A. Replace punger bushing.
B. Peplace connecting rod.
C. Match pressure stated in PUMP
SPECIFICATIONS.
D. Lower water tempersture stated in
PUMP SPECIFCATIONS.

PUMP TROUBLESHOOTING
08-27-03 Z08-00195A
ECN-02981
TROUBLE POSSIBLE CAUSE REMEDY
9. Dirty or worn check
valves.
A. Normal wear.
B. Debris
A. Remove and replace.
B. Check for lack of water inlet screens.
10. Presence of metal
particles during oil
change.
A. Failure of internal component.
B. New pump.
A. Remove and disassemble to find
probable cause.
B. New pumps have machine fillings and
debris and should be drained and
refilled per PUMP SPECIFICATIONS.
11. Water leakage from
under head.
A. Worn packing.
B. Cracked/scored plunger.
C. Failure of plunger retainer
o-ring.
A. Install new packing.
B. Remove and replace plunger.
C. Remove and replace plunger retainer
o-ring.
12. Loud knocking
noise
in pump
A. Pulley loose on crankshaft.
B. Defective bearing.
C. Worn connecting rod.
D. Worn crankshaft.
E. Worn crosshead.
A. Check key and tighten set screw.
B. Remove and replace bearing.
C. Remove and replace connecting rod.
D. Remove and replace crankshaft.
E. Remove and replace crosshead.
13. Frequent or
premature failure of
the packing
A. Scored, damaged, or worn
plunger.
B. Overpressure to inlet manifold.
C. Abrasive material in the fluid
being pumped.
D. Excessive pressure and or
temperature of fluid being
pumped.
E. Over pressure of pumps.
F. Running pump dry.
A. Remove and replace plungers.
B. Reduce inlet pressure.
C. Install proper filtration on pump inlet
pumping.
D. Check pressures and fluid inlet
temperature; be sure they are within
specified range.
E. Reduce pressure.
F. Do not run pump without water.
14. Low Pressure A. Dirty or worn check valves.
B. Worn packing.
C. Belt slipping.
D. Improperly sized spray tip or
nozzle.
E. Inlet filter screen is clogged.
F. Pitted valves.
A. Clean/Replace check valves.
B. Remove and replace packing.
C. See BELT TENSION in MACHINE
MAINTENANCE.
D. See MACHINE SPECIFICATIONS for
specified spray tip or nozzle.
E. Clean inlet filter screen.
F. See VALVE SERVICE in PUMP
MAINTENANCE.
15. Erratic pressure:
pump runs rough
A. Dirty or worn check valves.
B. Foreign particles in valve
assemblies.
C. High inlet water temperature
A. Clean/Replace check valves.
A. Clean/Replace check valves.
C. See temperature in PUMP
SPECIFICATIONS.
16. Excessive vibration A. Dirty or worn check valves A. See "Dirty or worn check valves"
17. Scored plungers A. Abrasive material in fluid being
pumped.
A. Install proper filtration on pump inlet
plumbing
18. Pitted plungers A. Cavitation A. Decrease inlet water temperature
and/or increase inlet water pressure.
19. Cavitation A. High inlet fluid
temperatureLow inlet pressure.
A. Lower inlet fluid temperature.Raise
inlet fluid pressure.

35