Good Way GPW-1200 Installation and operation manual

OPERATING & MAINTENANCE
INSTRUCTIONS
$1.00
PRESSURE
WASHERS
GPW-1200 • GPW-1000 • GPW-1000-P
GPW-2003 • GPW-2502
®

Effective date – June 1, 2004
MADE IN U.S.A.
© Copyright 2004 Goodway Technologies Corporation, Stamford, CT, U.S.A.
Goodway is a Trademark of Per K. Reichborn.
Goodway reserves the right to improve products.
Contact the factory for the latest configuration and uses.
SAVE THESE INSTRUCTIONS

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IMPORTANT SAFETY INSTRUCTIONS
To prevent operator injury and damage to the equipment, please read and observe the
following basic safety precautions:
1. Read all the instructions before using the product.
2. To reduce the risk of injury, close supervision is necessary when the
product is used near children.
3. Know how to stop the product and bleed pressures quickly. Be thoroughly
familiar with the controls.
4. Stay alert – watch what you are doing!
5. Do not operate the product when fatigued or under the influence of
alcohol or drugs.
6. Keep operation area clear of all persons.
7. Do not overreach or stand on unstable support. Keep good footing and
balance at all times.
8. Follow the maintenance instructions specified in the manual.
9. Check with your local water utility to see if a backflow preventer is
required.
WARNING: Risk of Injection or Severe Injury – Keep Clear of Nozzle – Do Not
Direct Discharge Stream at Humans or Animal – This Product Is to be Used Only
by Trained Operators.
GROUNDING INSTRUCTIONS
This product must be grounded. If it should malfunction or break down,
grounding provides a path of least resistance for electric current to reduce
the risk of electric shock. This product is equipped with a cord having an
equipment-grounding conductor and a grounding plug. The plug must be plugged
into an appropriate outlet that is properly installed and grounded in accordance
with all local codes and ordinances.
DANGER: Improper connection of the equipment-grounding conductor can
result in a risk of electrocution. Check with a qualified electrician or service
personnel if you are in doubt as to whether the outlet is properly grounded.
DO NOT USE ANY TYPE OF ADAPTOR WITH THIS PRODUCT.

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GROUND FAULT CIRCUIT INTERRUPTER PROTECTION:
GPW-1200/GPW-1000/GPW-2003/2502
These pressure washers are provided with a ground fault circuit interrupter
(GFCI) built into the power supply cord. This device 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. (GPW-2003-3 and GPW-2502-3 three phase units do not have
GFCI and must be connected to one).
EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong grounding-type 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.
Examine extension cord before using and replace if damaged.
Do not abuse extension cord and do not yank on any cord 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.
CAUTIONS: GPW-1200/GPW-1000/GPW-1000-P
1. When machine is shut down, a small amount of water is left in pump
and plumbing; therefore, THE MACHINE MUST NOT BE STORED UNDER
FREEZING CONDITIONS. If necessary, a small amount of antifreeze may
be pumped through the system if machine is left in cold storage.
2. Do not run pump dry.
3. When pump is running without spraying, the bypass valve allows the
water to circulate around the pump. This condition will gradually elevate the
temperature of the water through friction, and overheating will
damage the pump seals. Therefore, THE PUMP MUST BE ALLOWED
TO RUN MORE THAN 10 MINUTES WITHOUT SPRAYING.

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4. The Goodway GPW-1000 and GPW-1000P may be used with warm water
supply at a maximum of 180°F (82°C), and the GPW-1200 at a maximum of
140°F (60°C) to improve cleaning. IF WARM WATER SUPPLY IS USED, THE
TIME IN NO. 3 SHOULD BE REDUCED FURTHER.
5. Since the high pressure spray is very powerful, DO NOT AIM AT OR SPRAY
HUMANS OR ANIMALS.
6. Do not operate without eye protection.
CAUTIONS: GPW-2003/GPW-2502
1. Avoid exposing the machine to freezing temperatures as the pump can be
severely damaged if water is allowed to freeze in it. If the unit must be ex-
posed to freezing, run pump dry approximately 10 seconds to drain the pump.
2. Do not run the pump dry.
3. The GPW-2003 and GPW-2502 may be connected to a warm water
supply at a maximum of 160°F (71°C) to improve cleaning action. (See
“MAINTENANCE” for further information regarding warm water operation).
4. Since the high pressure spray is very powerful, DO NOT AIM AT OR SPRAY
HUMANS OR ANIMALS.
5. Do not operate without eye protection.
6. The GPW-2003 and GPW-2502 can only be run in the vertical position.
7. To avoid inadvertent operation, turn power off when the unit is not used for
an extended period of time or when the unit's operator departs the area.
ASSEMBLY INSTRUCTIONS: GPW-1200
The GPW-1200 comes virtually ready to use. Final assembly requires only
the connection of the gun/wand and high pressure hose using the quick
disconnect fitting. Insert the dip tube into the chemical container.
ASSEMBLY INSTRUCTIONS: GPW-1000
1. Place power unit on bench or floor with louvers down. Place dolly
assembly on back and insert the two plastic thumbscrews through the
tapped holes on the back of the power unit.

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2. Turn the machine upright and connect the end of the high pressure hose to
the quick disconnect fitting on the top of the machine.
3. Assemble water connection fitting in front bottom edge of cover and
carefully thread onto nipple (P/N 1004). Tighten securely.
4. Place chemical container (if used) on top of unit inside the retaining bail and
place dip tube inside container. Make sure dip tube strainer is attached to
dip tube.
ASSEMBLY INSTRUCTIONS: GPW-1000-P
1. Place power unit on bench or floor with louvers down. Place dolly assembly
on back and insert the two thumbscrews through the tapped holes on the
back of the power unit.
2. Assemble water connection fitting in front bottom edge of cover and
carefully thread onto nipple (P/N 1004). Tighten securely.
3. Place chemical container (if used) on top of unit inside the retaining bail and
place dip tube inside container. Make sure dip tube strainer is attached to
dip tube.
4. Connect the high pressure hose to the quick disconnect fitting on the top of
the machine. Connect air hoses to valves (P/N 1060) – either air hose can be
connected to either valve.
ASSEMBLY INSTRUCTIONS: GPW-2003/GPW-2502
1. Remove the unit from the packing material and inspect for damage.
2. Ensure there is sufficient oil in the pump by inspecting the window on
the back of the unit.. Oil level should be in the middle of the window.
DO NOT OVERFILL!
3. Connect the end of the high pressure hose to the fitting on the side of
the machine.
OPERATING INSTRUCTIONS: GPW-1200
1. Connect water hose capable of delivering a minimum of 1.8 GPM
(6.8 LPM) to inlet and turn on faucet. Consult the Goodway catalog for
heavy-duty water supply hose. DO NOT RUN PUMP DRY.

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2. Plug into grounded outlet of proper voltage for the machine. Make sure the
outlet is fused for a minimum of 15 Amps. Any additional extension cord
must be grounded and be a minimum of 12-3 gauge wire. Goodway offers a
20 amp, 10-3 gauge, 50' (15.2m) cord – see catalog.
3. Fill chemical container with soap solution or other chemical and place on
ground close to machine. Connect dip tube to container.
4. Turn motor on (watertight switch located on side of power unit). Pull trigger on
spray gun before turning on switch in order to lighten starting load on motor.
OPERATING INSTRUCTIONS: GPW-1000
1. Connect water hose capable of delivering a minimum of 2.5 GPM
(9.6 LPM) to inlet and turn on faucet. Consult the Goodway Catalog for
heavy-duty water supply hose. DO NOT RUN PUMP DRY.
2. Plug the electric cord (located inside accessory box in power unit) into a
grounded outlet of proper voltage for the machine. Make sure the outlet
is fused for a minimum of 15 Amps. Any additional extension cord must be
grounded and be a minimum of 12-3 gauge wire. Goodway offers a
20 Amp, 10-3 gauge, 50' (15.2m) cord – see catalog.
3. Fill chemical container with soap solution or other chemical.
4. Turn motor on (watertight switch located on top of power unit). Pull trigger
on spray gun before turning on switch in order to lighten starting load on
motor.
OPERATING INSTRUCTIONS: GPW-1000-P
GENERAL
The GPW-1000-P is powered by an air motor developing over 2 HP (1.5 kW)
and requires minimum 85 CFM (2.4 m3/min) of air at 80 PSI (5.5 BAR) to operate
properly. The air must be clean, free of water and lubricated. A filter-lubricator is
available from Goodway.
The air motor is started by pulling the trigger and runs only when spraying. This
system conserves air and extends the life of both the air motor and the
high pressure pump.
IMPORTANT: Goodway Air Powered Pressure Washers are supplied with a twin
hose which must be connected to the power unit for proper operation.

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THE HI-PRESSURE HOSE AND THE CLEAR CONTROL HOSES MUST BE
SECURELY CONNECTED TO THE POWER UNIT BEFORE THE COMPRESSED
AIR SUPPLY LINE IS ATTACHED. If the air supply line is connected to the power
unit first, the machine will begin running and damage to the pump may result.
Connect the twin hose as follows:
1. Push the male quick disconnect plug on the hi-pressure hose into the female
quick disconnect on the power unit until the knurled collar clicks into the
locked position.
2. The clear control hoses are attached to the power unit using a brass female
threaded fitting. These fittings thread onto the male threaded valve body
mounted next to the female quick disconnect on the top of the power unit.
The brass fittings must be threaded AS FAR AS THEY WILL GO
onto the valve body to open the valve allowing for proper operation.
THE BRASS FITTINGS ARE SOMEWHAT FRAGILE SO CARE MUST BE TAKEN
TO AVOID DAMAGING THE FITTINGS.
NOTE: Either control hose can be connected to either valve.
OPERATION
1. Connect water hose capable of delivering a minimum of 2.5 GPM (13 LPM) to
inlet and turn on faucet. Consult the Goodway Catalog for heavy-duty water
supply hose. DO NOT RUN PUMP DRY.
2. Connect the air supply line to the hose barb fitting using a 1/2" (13mm) ID
or larger air hose. Goodway offers a 1/2" ID x 50' (13mm ID x 15.2m) air
hose – see catalog. Do not use quick disconnects as they restrict air flow.
3. Connect the spray wand and nozzle to spray gun. Motor will start when the
trigger is pulled.
4. After use, disconnect the air coupling and drop a small amount of oil into
the air fitting of the machine. Reconnect the air hose and run the machine
for 2-3 seconds to insure an internal coating of oil inside the air motor to
prevent corrosion. This procedure is important if the machine is to be left
unused for any length of time.
OPERATING INSTRUCTIONS: GPW-2003/GPW-2502
1. Connect a water hose capable of delivering a minimum of 3.2 GPM
(12.1 LPM) for the GPW-2003 or 2.7 GPM (10.2 LPM) for the GPW-2502.

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Consult the Goodway catalog for heavy-duty water supply hose. Turn on
water supply. DO NOT RUN PUMP DRY.
2. Plug the electric cord into a grounded outlet of proper voltage for the
machine. Make sure the outlet is fused for a minimum Amps listed on the
units nameplate. Any additional extension cord must be grounded and be
a minimum of 10-3 gauge wire. Goodway offers a 20 Amp, 10-3 gauge, 50'
(15.2m) cord – see catalog.
3. Fill built-in chemical container with soap solution or other chemical.
4. Turn unit on, green light will illuminate (watertight switch and light are
located on side of power unit). Pull trigger on spray gun to activate unit.
CHEMICAL OR SOAP INJECTION: ALL MODELS
It is recommended that liquid chemical or soap be used whenever possible as
powders may not be completely dissolved and may clog the siphon injector.
The chemical dip tube is supplied with a strainer to minimize contamination
of the siphon injector.
The dip tube may be placed in the tank supplied or in a drum of solution if
prolonged application of solution is required. The dip tube may have to be
lengthened when using 30 or 55 gallon (114 or 208 liter) drums of solution.
CHEMICAL OR SOAP INJECTION: GPW-1200
1. Fill plastic container with chemical or soap.
2. Connect plastic dip tube and turn machine on. A dip tube strainer is
provided and should be attached to dip tube.
3. The GPW-1200 is supplied with the standard adjustable spray nozzle [P/N 5812
(High-Lo Nozzle)]. The nozzle will draw chemical or soap at low pressure
(approx. 150 PSI/10BAR). The following describes their features and operation.
Adjustable High-Low Pressure Nozzle (P/N 5812)
Pressure is regulated by turning collar on spray nozzle.
Turn the collar fully counterclockwise (as viewed from
spray handle) for maximum pressure. One full turn clockwise
will decrease pressure to 150 PSI (10 BAR) at which point
chemical or soap will be injected in the spray.

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Multi-Jet Nozzle ( P/N PWN-002)
NOTE: Maximum pressure with nozzle (P/N PWN-002)
is 1,000 PSI (70 BAR).
Supplied with a hardened stainless steel spray tip
containing four orifices each marked with orifice
numbers as follows:
Orifice No. Spray Pattern Usage
00045 Solid Jet Concentrated Cleaning
15045 15° Flat Spray General Cleaning
40045 40° Flat Spray Large Area Cleaning
1520 15° Low Pressure Pick up Soap or Chemicals
IMPORTANT — INDEX NOZZLE WITH PRESSURE SHUT OFF
4. It takes several seconds before the soap reaches the spray nozzle.
5. Soap is always applied at low pressure. (Siphon injector is activated at low
pressure only).
CHEMICAL OR SOAP INJECTION: GPW-1000/GPW-1000-P
The GPW-1000 and GPW-1000-P utilize quick disconnect nozzles. To initiate
chemical/soap injection, install the nozzle with the large orifice. This nozzle
delivers low pressure [200 PSI (13.8 BAR)] and automatically activates the siphon
injector to apply chemical or soap. It takes several seconds for the chemical or
soap to travel through the high pressure hose to the nozzle.
The four other nozzles deliver full pressure with differing spray patterns.
To switch from one nozzle to the other simply:
1. Release the trigger to stop spray action.
2. Pull the ring back on the quick disconnect coupling. The nozzle will
be released.
3. Install the desired nozzle, pushing it all the way in ensuring that it is
properly seated. Nozzles can not be changed while spraying.
SOAP INJECTION: GPW-2003/GPW-2502
Use only a liquid soap with the GPW-2003 and GPW-2502 To initiate soap

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injection, push the nozzle at the end of the high pressure wand forward. This
nozzle position delivers low pressure [200 PSI (13.8 BAR)] and automatically
activates the siphon injector to apply chemical or soap. It takes several seconds
for the chemical or soap to travel through the high pressure hose to the nozzle.
To stop soap application, pull the nozzle back.
MIXING RATIOS: GPW-1200/GPW-1000/GPW-1000-P
The mixing ratio of chemicals to water depends on the viscosity of the chemicals
being used. The mix ratio for watery liquids is approximately 1 part chemical or
soap to 20 parts water when low pressure spray is used.
If a chemical is to be mixed with water in a ratio of 100:1, premix 1 part chemical
with 4 parts of water in the tank.
The spray nozzle is adjusted to low pressure setting. The diluted chemical is now
mixed in a ratio of 20:1 with water which corresponds to a ratio of 100:1 of the
undiluted chemical.
For mix ratio of 1 tablespoon per gallon of water, prepare a premix solution of
1 part chemical to 10 parts of water.
For mix ratio of 1 teaspoon per gallon of water, prepare a premix solution of
1 part chemical to 30 parts of water.
A low pressure spray without chemical injection is obtained by opening spray
nozzle and removing dip tube from soap container.
WARNING: Applying strong acid or caustic solutions with a pressure washer is
not recommended and voids the warranty.
MIXING RATIOS: GPW-2003/GPW-2502
The mixing ratio of chemicals to water depends on the viscosity of the chemicals
being used. The mix ratio for watery liquids is approximately 1 part chemical or
soap to 25 parts water when low pressure spray is used.
If a chemical is to be mixed with water in a ratio of 100:1, premix 1 part chemical
with 3 parts of water in the tank.
The spray nozzle is adjusted to low pressure setting. The diluted chemical is now
mixed in a ratio of 25:1 with water which corresponds to a ratio of 100:1 of the
undiluted chemical.

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For mix ratio of 1 tablespoon per gallon of water, prepare a premix solution of
1 part chemical to 71/2 parts of water.
For mix ratio of 1 teaspoon per gallon of water, prepare a premix solution of
1 part chemical to 221/2 parts of water.
A low pressure spray without chemical injection is obtained by opening spray
nozzle and removing dip tube from soap container.
WARNING: Applying strong acid or caustic solutions with a pressure washer is
not recommended and voids the warranty.
TROUBLESHOOTING: ALL MODELS
Problem Probable Causes Remedy
Motor stops: Overloaded due to long Let cool down. Motor
Electric Models run without spraying protector will reset
automatically and
motor can be started
Extension cord too long or Change extension cord
inadequate size
Fuse blown Plug into adequately
fused outlet
Ground Fault not reset Reset Ground Fault
Motor stops: Air supply inadequate Open air supply
GPW-1000-P or turned off sufficiently
Pump runs but no spray Water not turned on Turn on water
Screen washer clogged Clean washer
Spray nozzle clogged Clean nozzle
Water comes out Siphon injector Disassemble injector
of dip tube check valve clogged and clean
Soap or chemical Siphon injector Disassemble injector
not picked up clogged and clean
Spray nozzle not Adjust according to
adjusted correctly instructions
Pressure too high Lower pressure

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TROUBLESHOOTING: GPW-1200/GPW-1000/GPW-1000-P
Problem Probable Causes Remedy
Spray Pressure Foreign matter trapped Disassemble pump
low or fluctuating in the check valve of and clean
the pump
TROUBLESHOOTING: GPW-2003/GPW-2502
Problem Probable Causes Remedy
Pressure and/or Worn packing seals Replace packing seals
delivery drops
Broken valve spring Replace spring
Worn or damaged nozzle Replace nozzle
Fouled discharge valve Clean valve assembly
Worn or damaged hose Repair/replace hose
Worn or plugged relief Clean, reset, and
valve on pump replace worn parts
Cavitation Check suction lines on
inlet of pump for
restrictions
Water in crankcase High humidity Reduce oil change
interval
Noisy operation Worn bearings Replace bearings,
refill crankcase with
recommended lubricant
Rough/pulsating Worn packing/ Replace packing. Check
operation with inlet restriction system for stoppage, air
pressure drop leaks, correctly sized
inlet plumbing to pump
Pump pressure Restricted discharge Resize discharge
as rated, pressure plumbing to flow rate of pump
drop at gun
Excessive leakage Worn plungers Replace plungers
Worn packing seals Replace packing seals
Excessive vacuum Reduce suction vacuum

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MAINTENANCE: GPW-1200
The GPW-1200 is shipped with the proper amount of oil. Due to the possibility of
spillage in shipment, the oil level should be checked prior to the first use of the
machine, as well as prior to each use of the machine.
With the machine resting on a level surface, check dip stick for correct
oil level. The correct oil level should reach the full mark on the dip stick.
(Note: Dip stick just pulls out.) If the oil level is low, add oil – DO NOT
OVERFILL. Use only an ISO 68 Hydraulic Oil ( P/N HPW-CPO).
Oil should be changed after the first 50 hours of operation and then every
500 hours or less depending on operating conditions.
MAINTENANCE: GPW-1000/GPW-1000-P
The high pressure pump must be lubricated every 100 hours of operation, or
monthly; whichever comes first. The grease fitting can be reached through the
opening in the side of the cover as marked. Use simple push-type grease gun
filled with Moly-Lithium No. 2 grease (wheel bearing grease).
MAINTENANCE: GPW-2003/GPW-2502
CRANKCASE LUBRICATION
The GPW-2003 and GPW-2502 are shipped with the proper amount of oil. Due to
the possibility of spillage in shipment, the oil level should be checked prior to the
first use of the machine, as well as prior to each use of the machine.
With the machine resting on a level surface, check the window on the back of
the unit for correct oil level. The correct oil level should be in the middle of the
window. (Note: Dip stick just pulls out.) If the oil level is low, add oil – DO NOT
OVERFILL. Use only an ISO 68 Hydraulic Oil (P/N HPW-CPO).
Oil should be changed after the first 50 hours of operation and then every
500 hours or less depending on operating conditions.
DISASSEMBLY: GPW-1200
The entire unit can be removed from the case by removing the cover, the four
motor mounting screws, chemical dip tube and high pressure hose and then
lifting entire motor-pump and plumbing assembly out of housing.

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DISASSEMBLY: GPW-1000/GPW-1000-P
The entire unit can be removed from the case by removing the cover, the four
motor mounting screws, chemical dip tube and high pressure hose and then
lifting entire motor-pump and plumbing assembly out of housing.
DISASSEMBLY: GPW-2003/GPW-2502
Access to the internal parts is gained by removing the front cover, allowing for
pump lubrication and component repair/replacement.
REPAIR KITS: GPW-2003/GPW-2502
REPAIR KIT FOR PUMPS [P/N 1265 (GPW-2003) & P/N 1285 (GPW-2502)]
P/N 1265-SK Seal Repair Kit
P/N 1285-VK Valve Repair Kit
REPAIR KIT FOR SIPHON INJECTOR (P/N 1205)
P/N 1205-RK O-Ring, Ball and Spring

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GPW-1200

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GPW-1000

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GPW-1000-P

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GPW-2003/GPW-2502

Goodway Technologies Corporation
420 West Avenue, Stamford, CT 06902-6384, USA
Tel: [phone] • Toll-Free Tel: [phone]
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Internet: www.goodway.com
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®