Hotsy CWC-53 User manual

9.801-695.0-B 01/19/17
Hotsy CWC
Stationary Cold Water Series
OPERATOR’S MANUAL
Pressure Washer
GROUND
GROUND
TACH/HOUR
EXPOSED PULLEYS AND
BELTS CAN CAUSE INJURY
KEEPCLEAR WHILE MACHINERY
ISOPERATING
POLEASYCORREASEXPUESTAS
PUEDENCAUSAR DAÑO
NOSE ACERQUE SI MÀQUINA ESTÁFUNCIONANDO
DESCOURROIESOU POULIESEXPOSÉES
PEUVENTCAUSER DESBLESSURES
NEPAS S’APPROCHER LORSQUE L’APPAREILEST EN OP ÉRATION
WARNING
PRECAUCIÓN/ AVERTISSEMENT
8.932-965.0
OPERATINGINSTRUCTIONS
WARNING / PRECAUCION / AVERTISSEMENT
MODE D’EMPLOI
INSTRUCCIONESDEOPERACION
EXPOSED PULLEYS AND
BELTSCAN CAUSE INJURY
KEEPCLEAR WHILE MACHINERY
ISOPERATING
POLEASYCORREAS EXPUESTAS
PUEDENCAUSAR DAÑO
NOSE ACERQUE SI MÀQUINA ESTÁFUNCIONANDO
DESCOURROIES OU POULIESEXPOSÉES
PEUVENTCAUSER DESBLESSURES
NEPAS S’APPROCHER LORSQUE L’APPAREILEST EN OPÉRATION
WARNING
PRECAUCIÓN/ AVERTISSEMENT
8.932-965.0
MODELS:
CWC-53
1.106-572.0
CWC-54
1.106-573.0
CWC-55
1.106-574.0
CWC-56
1.106-575.0
CWC-63
1.106-576.0
CWC-64
1.106-577.0
CWC-65
1.106-578.0
CWC-66
1.106-579.0
For the Hotsy Dealer nearest you,
consult our web page at
www.hotsy.com

2HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Machine Data Label

3
Table of Contents
Machine Data Label. . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
Introduction & Safety Information . . . . . . . . . . . . . . .5
Important Safety Information. . . . . . . . . . . . . . . . . . .6
Technical Specifications . . . . . . . . . . . . . . . . . . . . . .8
Operations
Component Identification . . . . . . . . . . . . . . . . . . . . .9
Assembly Instructions. . . . . . . . . . . . . . . . . . . . . . .10
Operations Instructions. . . . . . . . . . . . . . . . . . . . . .11
Maintenance
Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Smart Relay Instructions. . . . . . . . . . . . . . . . . . . . .14
Optional — Water Inlet Solenoid. . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .18
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

4
How To Use This Manual
This manual contains the following sections:
• How to Use This Manual
•Safety
• Operations
• Maintenance
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The model and serial number of your machine is
located on the back of the machine.
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive main-
tenance to keep the machine and its components in
good working condition. They are listed in this general
order:
•Pump
• Smart Relay
• Optional Water Inlet
• Troubleshooting
NOTE: If a service or option kit is installed on your
machine, be sure to keep the KIT INSTRUCTIONS
which came with the kit. It contains replacement parts
numbers needed for ordering future parts.
NOTE: The manual part number is located on the
lower right corner of the front cover.
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

5
Safety
Introduction & Safety Information
Thank you for purchasing this Pressure Washer.
We reserve the right to make changes at any time with-
out incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this pressure washer. Warninginformation
should be emphasized and understood. If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with the
operator in the operator’s native language by the
purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
The operator must know how to stop the machine
quickly and understand the operation of all controls.
Never permit anyone to operate the machine without
proper instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and
serial number. Use only identical replacement
parts.This machine is to be used only by trained
operators.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Pump Switch
Hour Meter
Detergent
Voltage
When the light ison, it meanspower supply ison
Motor Overload
When the light ison, it meansthe overload istripped.
Reset overload.
Identification Of Operational Label Symbols
Not all machines have all symbols

6
Safety
Important Safety Information
WARNING: To reduce the risk
of injury, read operating
instructions carefully before
using.
1. Read the owner's manual
thoroughly. Failure to follow
instructions could cause
malfunction of the machine
and result in death, serious
bodily injury and/or property
damage.
2. Know how to stop the machine and bleed pressure
quickly. Be thoroughly familiar with the controls.
3. Stay alert — watch what you are doing.
4. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling dealer for specific details.
DANGER: Improper connection of the equipment-
grounding conductor can result in a risk of electro-
cution. Check with a qualified electrician or service
personnel if you are in doubt as to whether the
outlet is properly grounded. Do not modify the plug
provided with the product - if it will not fit the outlet,
have a proper outlet installed by a qualified electri-
cian. Do not use any type of adaptor with this
product
WARNING: Keep wand, hose,
and water spray away from
electric wiring or fatal electric
shock may result.
5. To protect the operator from
electrical shock, the machine
must be electrically grounded.
It is the responsibility of the
ownertoconnectthis machine
to a UL grounded receptacle
of proper voltage and
amperage ratings. Do not
spray water on or near electrical components. Do
not touch machine with wet hands or while
standing in water. Always disconnect power before
servicing.
WARNING: Flammable liquids
can create fumes which can
ignite, causing property
damage or severe injury.
WARNING: Risk of explosion
— Do not spray flammable
liquids.
6. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
7. Never run pump dry or leave spray gun closed
longer than 1-2 minutes.
8. Keep operating area clear of all persons.
WARNING: High pressure
spray can cause paint chips or
other particles to become
airborne and fly at high
speeds. To avoid personal
injury, eye, hand and foot
safety devices must be worn.
9. Always wear properly rated
eye protection such as
safety goggles or face shield
while spraying. (Safety
glasses do not provide full
protection.)
WARNING: Grip cleaning wand
securely with both hands
before starting. Failure to do
this could result in injury from
a whipping wand.
WARNING: High pressure
developed by these machines
will cause personal injury or
equipment damage. Keep clear
of nozzle. Use caution when
operating. Do not direct
discharge stream at people, or
severe injury or death will
result.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
WARNING
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
OPERATIONS
SAFETY
MAINTENANCE
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING
WARNING
RISK OF EXPLOSION:
DO NOT SPRAY
FLAMMABLE
LIQUIDS.
WARNING
TRIGGER GUN KICKS
BACK — HOLD WITH
BOTH HANDS
WARNING
USE PROTECTIVE
EYE WEAR
AND CLOTHING
WHEN OPERATING
THIS EQUIPMENT.
WARNING
RISK OF INJECTION
OR SEVERE INJURY
TO PERSONS. KEEP
CLEAR OF NOZZLE.

7
Safety
10. To reduce the risk of injury, close supervision is
necessary when a machine is used near children.
Do not allow children to operate the pressure
washer. This machine must be attended during
operation.
11. Never make adjustments on machine while in
operation.
12. Be certain all quick coupler fittings are secured
before using pressure washer.
WARNING: Protect machine
from freezing.
13. To keep machine in best
operating conditions, it is
important you protect
machine from freezing.
Failure to protect machine
from freezing could cause
malfunction of the machine
and result in death, serious
bodily injury, and/or property
damage. Follow storage
instructions specified in this manual.
14. Inlet water must be clean fresh water and nohotter
than 90°F.
15. Manufacturer will not be liable for any changes
made to our standard machines or any compo-
nents not purchased from us.
16. The best insurance against an accident is precau-
tion and knowledge of the machine.
WARNING: Be extremely
careful when using a ladder,
scaffolding or any other rela-
tively unstable location. The
cleaning area should have
adequate slopes and drainage
to reduce the possibility of a fall
due to slippery surfaces.
17. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
18. Do not operate this machine when fatigued or
under the influence of alcohol, prescription medica-
tions, or drugs.
19. Follow the maintenance instructions
specified in the manual.
WARNING: Must be plugged
into properly wired three hole
grounded outlet that
accommodates plug on power
cored. Failure to comply could
result in electrical shock.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
WARNING
PROCTECT FROM
FREEZING
WARNING
RISK OF INJURY
FROM FALLS WHEN
USING LADDER.
WARNING
DO NOT SPRAY
MACHINE OR ANY
PEOPLE, ANIMALS OR
ELECTRICAL PARTS.

8
Safety
Technical Specifications
Model #
Pump
Volume
@ Pump
Head
Pump
Pressure
at Pump
Head
Motor
HP Machine Voltage
Total
Machine
Amperage
Machine
Weight Shipping Weight Machine Dimensions
CWC-53 3.9 GPM /
234 GPH 3000 PSI 7.5 230VAC/ 60Hz 1Ph 36 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-54 3.9 GPM /
234 GPH 3000 PSI 7.5 230VAC/ 60Hz 3Ph 23 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-55 3.9 GPM /
234 GPH 3000 PSI 7.5 460VAC/ 60Hz 3Ph 11 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-56 3.9 GPM /
234 GPH 3000 PSI 7.5 575VAC/ 60Hz 3Ph 9 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-63 4.95GPM
/ 297 GPH 2000 PSI 7.5 230VAC/ 60Hz 1Ph 28 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-64 4.95GPM
/ 297 GPH 2000 PSI 7.5 230VAC/ 60Hz 3Ph 18 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-65 4.95GPM
/ 297 GPH 2000 PSI 7.5 460VAC/ 60Hz 3Ph 9 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
CWC-66 4.95GPM
/ 297 GPH 2000 PSI 7.5 575VAC/ 60Hz 3Ph 8 Amps 289 Lbs 340 Lbs L 24.25” X W 21” X H 36”
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

9
Operations
Component Identification
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Pump — Develops high pressure by pumping water
volume through nozzle.
Spray Gun — Controls the application of water and
detergent onto cleaning surface with trigger device.
Includes safety latch.
Detergent Metering Valve — Controls detergent
mixture.
Wand — Must be connected to the spray gun.
High Pressure Hose — Connect one end to water
pump discharge nipple and the other end to spray gun.
Pressure Nozzle — Inserted into wand quick coupler
to develop pressure
Safety Trigger Lever — Prevents accidental triggering
of spray gun while inserting a high pressure nozzle.
GROUND
GROUND
TACH/HOUR
EXPOSEDPULLEYSAND
BELTSCAN CAUSEINJURY
KEEPCLEAR WHILE MACHINERY
ISOPERATING
POLEASYCORREASEXPUESTAS
PUEDENCAUSARDAÑO
NOSE ACERQUE SI MÀQUINA ESTÁFUNCIONANDO
DESCOURROIESOUPOULIES EXPOSÉES
PEUVENTCAUSERDES BLESSURES
NEPAS S’APPROCHER LORSQUE L’A PPAREILESTEN OPÉRATION
WARNING
PRECAUCIÓN/ AVERTISSEMENT
8.932-965.0
OPERATINGINSTRUCTIONS
WARNING / PRECAUCION / AVERTISSEMENT
MODE D’EMPLOI
INSTRUCCIONESDEOPERACION
EXPOSEDPULLEYSAND
BELTSCANCAUSEINJURY
KEEPCLEAR WHILE MACHINERY
ISOPERATING
POLEASYCORREAS EXPUESTAS
PUEDENCAUSARDAÑO
NOSE ACERQUE SI MÀQUINA ESTÁFUNCIONANDO
DESCOURROIESOUPOULIESEXPOSÉES
PEUVENTCAUSERDESBLESSURES
NEPAS S’APPROCHER LORSQUE L’APPAREILEST EN OPÉRATION
WARNING
PRECAUCIÓN/ AVERTISSEMENT
8.932-965.0
High Pressure
Hose
Inlet Power
Junction Box
Pump Switch
Wand
Garden Hose
(not included)
Detergent
Metering
Valve
Nozzles
Detergent Bucket
(not included)
Spray Gun
High Pressure
Nozzle
Safety Trigger
Lever
Detergent
Inlet
Water
Outlet

10
Operations
Assembly Instructions
Unpacking
Unpack carefully. Wear safety glasses or goggles while
unpacking, assembling or operating pressure washer. If
there are missing components or hidden damage immedi-
ately contact dealer or carrier concerning discrepancies.
1. Cut strapping band from pressure washer and
pallet.
2. Remove pressure washer from pallet.
Parts Included
• Pressure Washer
• Pressure Hose
•Wand
• Parts Box Containing:
-Pressure Nozzles (3 on machine).
-Trigger Gun
• Operating Instructions and Parts Manual
Tools Required
• 10" Adjustable Crescent Wrenches (2 ea.) ?
• Blade Screwdriver
Pressure Hose, Wand and Wand Holder
1. Use teflon tape on plumbing connections to
prevent leakage.
2. Install pressure hose on machine as shown.
3. Assemble wand components as shown.Connect
pressure hose to trigger gun.
NOTE: The nozzle is not to be installed at this time.
4. Make sure that all plumbing connections are tight.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Pressure Hose
Coupler
Wand
Pressure Hose
Trigger Gun
Quick Disconnect Plug
Quick
Disconnect

11
Operations
Operations Instructions
To Clean
WARNING: Risk of injection or severe injury - Keep
clear of nozzle - DO NOT direct discharge stream at
persons - This machine is to be used only by
qualified operators.
AVERTISSEMENT: RISQUE D’INJECTION ET DE
BLESSURES GRAVES. SE TENIR À L’ÉCART DU
JET. NE PAS DIRIGER LE JET DE SORTIE VERS
D’AUTRES PERSONNES. CONFIER L’UTILISATION
DE CE MATÉRIEL À UN OPÉRATEUR QUALIFIÉ.
1. Insert detergent inlet line into container of mixed
detergent. Open detergent ON/OFF valve. The
detergent will be pulled automatically into the
system. Allow detergent to reach end of wand
before proceeding to step 3.
2. Select pressure nozzle with spray pattern that
matches your cleaning needs. Engage manual
trigger lock and install selected nozzle.
3. Wash from the bottom to the top, using side to side
motions. This washes away heavy dirt and allows
the detergent to soak as you work toward the top.
4. Do not wash at a 90° angle to the work (straight at
it). This will allow water to splash back at you and
reduces your cleaning power. Wash at a 30° to 60°
angle to the work. This will allow the water to
splash away from you and the water will wash the
dirt away faster and easier.
5. Use the width of the spray pattern to wash in a
wide path. Overlap spray paths for complete
coverage. Wash from side to side, using slow,
steady motions.
6. The nozzle should be 12" to 24" from work, closer
for tough areas. Be careful on painted or delicate
surfaces, the pressure may damage surface if
nozzle is too close.
7. Small parts should be washed in a basket and
larger, lightweight parts should be clamped down
so the pressure does not push them away.
8. Close the detergent ON/OFF valve to permit rinse.
Always rinse with cold water after using detergents.
Rinse from the top to the bottom to prevent
detergent from dripping onto a rinsed area. For the
best results, contact your Hotsy dealer to help you
select the best detergent for your application.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

12
Operations
Pre-Operation Check
• Read machine safety warnings
• Pump oil (SAE 10-40W (non-detergent oil))
• Cold water supply
(1gpm over machines rating •5/8" • 20 psi)
• Proper power supply and circuit protection
• Hose, wand, nozzles (nozzle sizes per serial
plate)
• Water filter (intact, non restrictive)
• Read operation instructions
• This machine must be protected from the
elements/freezing.
Set-Up Procedures
This machine is intended for indoor use. Machine
must be stored indoors when not in use.
1. Attach a minimum 5/8" garden hose to inlet
connector. Minimum flow should be 1 gpm over the
flow rate of the pressure washer.
2. Attach high pressure hose to discharge nipple
using quick coupler. Lock coupler securely into
place by pulling back coupler collar and inserting it
onto dis-charge nipple, then pushing collar forward
to lock in place.
3. Attach wand to spray gun using teflon tape on
threads to prevent leakage.
4. Attach connector on discharge hose to spray gun
using teflon tape on threads.
5. Remove oil plug on top of pressure washer pump
and replace with dipstick supplied. (This may be
installed from the factory.)
6. Check oil level on oil dipstick on top of pump. Oil
should be visible one half way up sight glass
(10W-40 non-detergent).
Operating Instructions
1. Read safety and preventative maintenance
instructions before starting machine.
2. Turn on water at faucet and pull trigger on spray
gun allowing water to flow until all air has
discharged from system. Check for water leaks;
tighten as needed.
3. Push the pump switch on.
4. Turn the variable pressure control handle
clockwise to increase pressure.
5. To apply detergent read “How to Use The
Detergent Injector.”
Shut Down-Up Procedures
1. Rinse with clean water to remove any soap
residue, by placing detergent hose into fresh water
bucket and operating injector as described below.
2. Release the trigger on the spray gun. Turn the
switch off if the machine is going to be left unat-
tended. (Time delay only).
3. Turn off water supply.
4. Open spray gun to relieve remaining pressure.
5. Remove water supply hose.
IMPORTANT: The trigger gun provided with this
pressure washer is equipped with a manual trigger
lock to prevent accidental operation of the trigger
gun, refer to figure above. The safety trigger lock
should be used whenever the trigger gun is not in
use.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Trigger
High
Pressure
Nozzle

13
Maintenance
WARNING: Unauthorized machine modification or
use of non-approved replacement parts may cause
personal injury and/or property damage and will
void the manufacturer warranty.
Pump
Use Hotsy Pump Oil (8.914-527.0) for pump crank-
case. Crankcase must be filled to the full mark on the
dipstick or to center of sight glass window found on the
rear of the pump. During the break-in-period, make
sure the oil is changed after the first 25 hours of opera-
tion. After that, replace oil every 3 months or 300 hours
of operation, whichever comes first.
Proper Pump Care:
• Do not pump acids.
• Do not allow pump to run dry.
• Winterize if storing in freezing temperatures;
refer to Storage for details.
• Use a water softener on the water system if
known to be high in mineral content.
• Use only high quality detergents and follow
manu-facturer’s mix recommendations.
• Flush the system with clear water immediately
after using detergent solutions.
• Clean filter screen on detergent inlet line peri-
odically.
• Flush the pressure washer system with anti-
freeze if storing for an extended period of time;
refer to Storage for details.
Pump Motor
On a yearly basis, oil pump motor per instructions on
motor nameplate.
NOTE: Some motors may be equipped with perma-
nently lubricated bearings and will not require addi-
tional lubrication.
Unloader Valve
WARNING: The unloader valve on this pressure
washer has been factory set and sealed and is a
field nonadjustable part. Tampering with the
factory setting may cause personal injury and/or
property damage, and will void the manufacturer
warranty.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Dipstick
Sight Glass
(on Rear of Pump)
Oil Fill

14
Maintenance
Smart Relay Instructions
Digital Timer (Optional)
The following are instructions on how to set the param-
eters on the digital timer in Programming Mode. To
define these settings please follow the steps below.
Setting the Clock:
1. Press the ESC key located next to the display
window and under the arrow key pad (see figure
below). Pressing the ESC key will access the
Parameter Assignment Menu.
2.Using the up/down arrow
keys ▲ or ▼, move the
cursor to highlight ‘Setup’
and press OK to accept.
3.Move the cursor to
highlight ‘Clock’ and press
OK to accept.
4.Move the cursor to
highlight ‘Set Clock’ and
press OK to accept.
NOTE: When setting time on
clock, use only military time.
5.Move the cursor to the value
wanting to be changed using
the left/right arrow keys or
, and change the value by
using the up/down arrow keys
▲ or ▼. When you are done
setting the time and date
press OK to accept your changes.
6. Press ESC three times to exit to the main menu.
Programming Instructions
The CWC can be configured to run in Time Delay or
Auto Start/Stop with lockout. Machines are factory set
withAuto Start/Stopwith4 hourLockout. ASmart Relay
controls how the machine will operate by using three
internal timers; these timers are adjustable. The
following is a brief description of these timers:
Timer 1: ‘Lockout Timer’ (Time Delay)
• Timer 1 de-energizes (lockout) the machine if
not being used for a preset time. If machine
has ‘Locked out’ it can only be re-energize by
pressing the ‘Pump On’ switch. Timer 1 is
factory set to 4 hours.
Timer 2: ‘Auto Start/Stop Timer’
• Timer 2 allows the pump to run in bypass for a
preset time. If the pump runs in bypass longer
than the allotted time the timer will drop power
to the motor contactor and machine will be in
standby mode. Squeezing the gun trigger will
restart the pump (if Timer 1 has not locked out).
Timer 2 is factory set to 30 seconds.
Stop
Program
Setup
Network
Diagnostics
Msg Cong
Start Screen
Clock
LCD
Menu Language
Switch to OP
NTP
Set Clock
S/W Time
Set Clock
Mon. 10:15
YYYY-MM-DD
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Mo 10:15
2006-10-13
S
WX
T
ESC OK
Display Screen
Arrow
Key Pad

15
Maintenance
Timer 3: ‘Reset Delay Timer’
• Timer 3 controls how long the pump must run
before resetting the ‘Lockout Timer’ (Timer 1).
This allows the pump to run long enough to re-
pressurize the system if there is pressure loss
when not in use. Timer 3 is factory set to 15
seconds.
To change to the parameters of the internal timers in
the Smart Relay complete the following steps:
1. Turn on the power to the machine but do not press
the start switch. Remove the front panel and then
the control panel cover. NOTE: Use extreme
CAUTION when reaching into the control box,
the machine has live power. Once powered the
Smart Relay window will display the following
screen, see figure 1 (if screen does not appear
press the left/right arrow keys or until correct
screen appears).
2. Press the ESC key located next to the display
window and under the arrow key pad to access the
Menu.
3.Using the up/down arrow
key s or t, move the cursor
to highlight ‘Program’ and
press OK to confirm.
4.Using the up/down arrow
key s or t, move the cursor
to highlight ‘Set Parameter’
and press OK to confirm.
5.The display window will
display the Timers.
Highlight the Timer desired
to change and press OK.
NOTE: Ta is the
accumulator timer and T is
the adjustable timer (the
variable that changes).
6.Highlight the T field and
press OK to edit the value.
Use the left/right arrow keys
t or u, move the cursor to
the used the up/down arrow
keys s or t to change this
value. Each timer has
optional units of time in
seconds (s), minutes (m),
and hours (h). To change
the unit of time using the arrows up/down keys s or
t. Once all values have been set press, OK to
accept and ESC to back up to the Timer selection
menu.
Repeat steps 5 and 6 for the other times if needed.
When finished press ESC three times to go to the main
menu.
Stop
Program
Setup
Network
Diagnostics
Set Parameter
Prog Name
Timer-1
Timer-2
Timer-3
Timer-1 1/1
T= 04:00h
Ta= 00:00
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
S
WX
T
ESC OK
1:
0.. 123456789
1..0123456789
2..01234
Fig. 1
Display Screen
Arrow
Key Pad

16
Maintenance
Factory Set Parameters (Auto Start/Stop with Lockout)
Time Delay Parameters
TIMER VALUE DESCRIPTION
Timer 1 04:00 Hours Turns machine off after 4 hours of non-use. To restart push the
‘Pump On’ switch.
Timer 2 30:00 Seconds Pump will run in bypass for 30 seconds before shutting off, machine
is still in standby mode. Pulling the gun trigger will restart the pump.
Timer 3 15:00 Seconds In case of pressure loss when machine is in standby, the pump can
run up to 15 seconds before resetting ‘Timer 1’ (lockout)
TIMER VALUE DESCRIPTION
Timer 1 03:00 Minutes When machine is not in use, pump will run in bypass for 3 minutes
and shut off. To restart push the ‘Pump On’ switch.
Timer 2 01:00 Hours To operate in time delay mode timer 2 must be deactivated. This is
done by setting timer 2 to value greater than timer 1.
Timer 3 15:00 Seconds Pump must run more than 15 seconds to reset timer 1.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

17
Maintenance
Optional — Water Inlet Solenoid
A water inlet solenoid can be added to the machine that
will open only when the machine is running or in
standby.The solenoidcloses whenthe machineisoffto
prevent possible water overflow when unattended.
Installation
• Connect a 24V/AC normally closed solenoid on
the water inlet, contact local Hotsy dealer for
solenoid options.
• Connect solenoid to the remote terminal using
16 ga minimum wire
• Wire solenoid to remote terminal according to
figure below
Before powering up machine, fill float tank to prime the
system.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B
Water Inlet Solenoid Wiring Schematic
EXISTING
WIRING
Water Inlet Solenoid Wiring Schematic
(Remote Terminal Located Inside Machine)
98016960-12
Water Inlet
Solenoid
(N.C. 24VAC
)
1
2
3
4
5
6
7
8
9
10
11
12

18
Maintenance
Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
LOW
OPERATING
PRESSURE
Insufficient water supply Fully open faucet. Use larger supply hose;
clean filter at water inlet. Check for kinks.
Old, worn or incorrect spray nozzle Match nozzle number to machine and/or
replace with new nozzle.
Belt slippage Tighten or replace; use correct belt.
Plumbing or hose leak Check plumbing system for leaks. Re-tape
leaks with teflon tape.
Faulty or mis-adjusted unloader valve
(Where applicable)
Call local dealer. Tampering with the factory
setting may cause personal injury and/ or
property damage, and will void the manufac-
turer's warranty.
Worn packing in pump Install new packing kit.
Fouled or dirty inlet or discharge valves in
pump Clean inlet and discharge valves.
Worn inlet or discharge valves Replace with valve kit.
Obstruction in spray nozzle Remove obstruction.
Leaking pressure control valve (where
applicable) Rebuild or replace as needed.
Insufficient power supply Check voltage.
FLUCTUATING
PRESSURE
Valves worn Check and replace if necessary.
Blockage in valve Check and clean out if necessary.
Pump sucking air Check water supply and
suction line for air seepage at joints.
Worn piston packing Check and replace if necessary.
PRESSURE
LOW AFTER
PERIOD OF
NORMAL USE
Nozzle worn Check and replace if necessary.
Inlet or discharge valves worn Check and replace if necessary.
Inlet or discharge valves blocked Check and clean if necessary.
Unloader valve seat worn Check and replace if necessary.
Air being drawn through detergent inlet
line Refill the detergent container. Ensure that pick-up screen is fully immersed.
PUMP
NOISY
Air in suction line Check water supply and connections on
suction line.
Broken or weak inlet or discharge valve
springs Check and replace if necessary.
Worn bearings Check and clean if necessary.
Worn bearings Check and replace if necessary.
Excessive temperature of liquid Reduce to below 75° C (160°F).
PRESENCE
OF WATER IN PUMP
OIL
Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
Piston packing worn Check and replace if necessary.
MOTOR STRAINS
UNDER LOAD
(see next page)
Faulty motor Send to nearest Baldor repair center.
Incorrect spray nozzle Install proper nozzle size (see serial plate for
proper size.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

19
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
MOTOR STRAINS
UNDER LOAD
(CONTINUED FROM
PREVIOUS PAGE)
Obstruction In Spray Nozzle Remove Obstruction.
Mis-adjusted Unloader Valve Call Local Dealer.
Pump Low Or Out Of Oil Check Oil Level.
OIL SQUIRTS
OUT OF OIL
CAP ON PUMP Pump Over Filled With Oil Maintain Oil Level Halfway Up On The Sight
Glass At Rear Of Pump Or At Top Of Notch On
Dipstick (Where Applicable).
PUMP
RUNNING
NORMALLY
BUT PRESSURE
OUTPUT LOW
Pump Sucking Air Check Water Supply And Possibility Of Air
Seepage.
Valves Sticking Check And Clean Or Replace If Necessary.
Unloader Valve Seat Faulty Check And Replace If Necessary.
Nozzle Incorrectly Sized Check And Replace If Necessary
(See Serial Plate For Proper Size).
Worn Piston Packing Check And Replace If Necessary.
WATER DRIPPING FROM
UNDER
PUMP
Piston Packing Worn Check And Replace If Necessary.
O-ring Plunger Retainer Worn Check And Replace If Necessary.
Cracked Piston Check And Replace If Necessary.
OIL DRIPPING Oil Seal Worn Check And Replace If Necessary.
EXCESSIVE
VIBRATION IN
DELIVERY LINE Irregular Functioning Of The Valves Check And Replace If Necessary.
SYSTEM
WILL NOT
START
Motor Overload Tripped Check And Reset.
Pressure Switch Faulty (Time Delay
Only) Check, Clean Or Replace.
MOTOR “HUMS” BUT
DOES NOT TURN Electric Motor Single Phasing Check For Blown Fuse Or Loose Power Line.
Capacitor Bad 1ph Have Motor Serviced.
PRESSURE WASHER
WILL NOT RUN
Pump Switch In Off Position Place Switch In On Position.
Power Supply Disconnected Connect Power Supply.
Fuse Blown Or Circuit Breaker
Tripped In Electrical Supply Line. Replace Fuse Or Reset Circuit Breaker. Use Only Circuits Of Adequate Capacity.
Motor Circuit Overload Tripped Allow Sufficient Time For Motor To Cool Down.
Place Pump Switch In On Position.
PRESSURE WASHER
RUNS BUT WONT
SPRAY
Trigger On Trigger Gun Released Squeeze Trigger.
Water Supply Not Turned On Open Water Supply Valve.
Clogged Pressure Nozzle Clean Pressure Nozzle Opening.
Inlet Water Screen Clogged Check Screen And Clean If Necessary.
Pump Sucking Air Fill The Detergent Container And Check For
Loose Hose Clamps Or Fittings.
UNEVEN SPRAY
PATTERN Partially clogged or damaged pressure nozzle Clean or replace.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B

20
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
POOR OR NO
DETERGENT FLOW
Inadequate detergent supply Refill the detergent container. Ensure that
pick-up screen is fully immersed.
Detergent screen or hose clogged Clean. Always start with a clean detergent
container.
Clogged detergent injector check
valve Clean check valve at detergent injector.
POOR CLEANING
Improper detergent concentration
or mixing
Mix detergent per manufacturer's instruc-
tions. Ensure that powdered detergents are
fully dissolved.
Wrong detergent for application Select appropriate detergent.
Detergent valve not opening Check that handle or knob is not slipping on
shaft.
UNLOADER CYCLES
WHEN TRIGGER GUN IS
OPENED OR CLOSED
Air in system Open and close trigger gun several times.
Unloader defective Replace if defective.
Water leak between unloader valve
and trigger gun Check fittings, hose and trigger gun for leaks. Repair or replace.
HOTSY • CWC OPERATOR’S MANUAL • 9.801-695.0-B