AR Blue Clean AR620 User manual

Use • Maintenance ManUal
Warning: This manual must be read before
installation or use of the unit.
Winter storage or long time
storage. Drain all water out of the
pump. Flush the pressure washer
with a 50% antifreeze solution,
and relieve the pressure. Flush the
pressure washer before you use it
again to remove the antifreeze.
AR620 & AR630 Brass
Important
Notice:
A.R. North America
Attn: Pressure Washer Warranty Department
140 - 81st Avenue NE
Fridley, MN 55432
This product is under warranty to the original retail consumer against defects
in material and workmanship for a period of 1 (one) year and is a complete
“bumper to bumper” warranty including the spray gun, the high-pressure hose
and all accessories from the date of purchase. The warranty is not transferable
or assignable. This warranty covers replacement parts. This limited one year
warranty applies only to products used in consumer applications and is void in
rental or any commercial application. Reasonable care must be used in conformity
with operation and maintenance instructions in the owner’s manual and quick
start guide. Failure to follow these instructions will void this warranty.
Warranty returns
Items returned for warranty consideration must have a Returned Merchandise
Authorization (RMA) number. All unauthorized returns will be refused and
shipped back to sender. Call 1-866-538-5112 Monday through Friday 8:00 a.m.
- 5:00 p.m (Central Standard Time). Or E-Mail to: [email protected] 24
hours a day.
PressUre Washer liMited Warranty

Pos. Code Description Qty. Legend
AR2950
Repair Kits
Pos. Qty. Pos. Qty.
8 1 40 1
9 1 41 1
12 1 42 1
13 1 43 1
14 3 44 1
15 2 51 1
19 2 54 1
27 1 55 1
28 1 57 1
31 3 70 1
38 1
O-Rings
Kit 2715
1 1981780 Knob 1
2 1540560 Grub screw 1
3 1980300 Nut 1
4 1980390 Handle insert 1
5 1980220 Spring plate 2
6 1271070 Spring 1
7 1080041 Upper piston 1
8 1080401 Ring 1
9 1080250 O-Ring 1
10 1080070 Pin 2
11 1980210 Piston guide 1
12 880830 O-Ring 1
13 740290 O-Ring 1
14 800560 O-Ring 1
15 1080190 O-Ring 3
16 1271160 Lower piston 1
17 1080121 By-pass seat 1
18 1260570 Washer 1
19 390080 O-Ring 2
20 1540270 Brass screw 1
21 1270790 Sticker scale 1
22 395370 Grower 2
23 395270 Screw 2
24 1260530 Pressure gauge cap 1
25 1260520 Index 1
26 1270080 Valve housing 1
27 770140 O-Ring 2
28 1180140 O-Ring 1
29 1260540 Inlet fitting 1
30 1260560 Washer 1
31 880270 O-Ring 1
32 1540260 Screw 1
33 2639 Suction fitting 1
38 480480 O-Ring 3
39 1260670 Detergent fitting 1
40 720030 O-Ring 1
41 1262940 Valve cage 1
42 1250270 Valve spring 1
43 1250280 Inox ball 1
44 880840 O-Ring 1
46 1269041 Injector housing 1
48 1269010 Complete knob 1
49 1981770 Knob plug 1
51 1460430 O-Ring 1
52 1540170 Jet 1
53 1080091 Spring 1
54 394280 O-Ring 1
55 1200690 O-Ring 1
56 1270100 Detergent injector 1
57 1260820 O-Ring 1
58 1264070 Ring 1
59 1264060 Pressure gauge piston 1
60 1264090 Pressure gauge spring 1
61 1264080 Plug 1
70 1271170 Ring 1
Read and understand these instructions because they have
to do with safety. Pay particular attention to the safety
symbol throughout this manual. Failure to comply with
these instructions may result in personal injury or property
damage. DO NOT allow children to operate or play on or
around this equipment.
Before oPerating:
1. Plug the unit into a 3-prong outlet that is properly
grounded. Improper grounding can result in electrical
shock.
2. Do not operate the machine in or around an explosive environment.
3. Never spray flammable liquids.
4. Always wear safety glasses or goggles and appropriate clothing when
operating the unit.
5. Understand all safety precautions and first aid for chemicals being used.
6. Follow the chemical manufacturer’s recommendations when using
chemicals in the soap injector.
7. Do not alter the machine from the manufacturer’s design.
8. Keep all safety devices active on the machine.
9. Locate the machine so it is protected from external damage.
10. Always place the machine on a level surface.
11. Never spray any part of this pressure washer or any other electrical
machine.
12. Never use an undersized discharge nozzle.
13. Do not adjust the unloader relief valve.
14. Never operate the unit with broken or missing parts.
15. Always check and maintain proper oil levels described in the
Maintenance section of this manual.
safety instrUctions
!
!

While oPerating:
16. Always use water that is clear and free from particles.
17. Always point the wand nozzle away from people and animals,
the high pressure the unit generates is very dangerous.
18. Keep the pressure hose connected to the machine and wand
while unit is pressurized.
19. Never leave the wand unattended while the machine is running.
20. Always seek emergency medical care immediately if any fluid
penetrates the skin. The cut may be deeper and more serious
than it appears.
21. Never run preheated water into the machine.
22. Do not secure the wand in the squeezed, “ON” position.
23. No smoking when operating the machine.
24. Never use the unit when under the influence of drugs, alcohol or
medication.
25. Do not adjust the unloader.
26. Do not move the unit by pulling on the hose or electrical cord.
27. Only operate the machine with sufficient water supply to the
pump.
28. Do not let the machine run with the wand in the not-squeezed,
“OFF” position for more than 2 minutes (30 seconds with the
water temperature above 80° F). This causes bypass water
temperature to increase which damages the pump.
29. Protect your machine from freezing during storage. Follow
the instructions to protect your pressure washer from freezing
storage temperatures.
30. Always follow all other guidelines and safety instructions
described in this manual.
Combiset

asseMBly instrUctions
Pre-asseMBly checklist
1. The pressure washer should be as close as possible to the water
supply.
2. Locate the pressure washer on a solid, level surface with a gentle
slope to prevent water from building up in the work area. Excess
water can make surfaces slippery.
3. Position the unit so the operator has easy access to the pressure
washer and its controls.
4. To prevent damage and excessive hose wear, locate the pressure
washer so the hose does NOT extend across traffic areas. Make
sure there are no kinks or twists in the hose.
5. Use extension cords of at least 12-3 gauge for lengths up to
50 feet or 10-3 gauge for lengths up to 100 feet. Check the
extension cord to make sure it is not damaged or frayed. The
outlet should have an amperage rating of 20 amps or greater
and should have a Ground Fault Circuit Interrupter (GFCI).
6. Do not use the pressure washer outdoors if it is raining, and do
not spray the motor or any of its connections.
7. Do not use chemicals or agents which are not compatible with
the Buna-N and PVC (polyvinyl) or neoprene covering of the
hose.
8. Do not run acids or hard caustics through the pump.
9. Check to determine if the water supply is capable of exceeding
the output of the pump. The output of this unit is 2.1 gpm
(gallons per minute), so the water supply must deliver at least 2.5
gpm.
Calculate gpm flow rate by running the water supply
into a pail for one minute. Measure the gallons in
the pail. If it is at least 2.5 gallons in the minute, your
supply is adequate. Your water supply must be clean
and free of debris. Use water with a temperature of
less than 140° F.
Pos. Code Description Qty. Legend
AR620 / AR630
1 1260273 Black rear casing 1
2 1261551 Screw 8
3 180030 Screw 4
4 1260710 Black handle 1
5 1261760 Fan cowling 1
6 1264623 Black front casing 1
7 1260470 Screw 4
8 1260830 Base 2
9 1260780 Screw 4
10 1262790 Detergent hose 1
11 1341030 Suction filter 1
12 1269115 Detergent hose w/filter 1
13 1260360 Scew extension 1
14 1260300 Fan 1
15 1260970 Washer seal 1
16 1260810 Screw 1
17 1263550 Capacator 80uF 1
18 1265080 Switch gasket 1
19 1261240 Switch 1
20 1261560 Screw 4
21 1262370 Cord guide 1
22 1261410 Switch box 1
23 1260400 Switch box gasket 1
24 1269100 Ground terminal 1
25 1261820 Cord 1
26 1269090 Cord screw guide 1
27 1260950 Bearing 1
28 1260960 Motor plate 1
29 4747 Electric motor 1
30 1340280 Clamp 1
31 1260760 Screw 6
32 1269101 Rear cover 1
33 1260040 Rear cover gasket 1
34 1260480 Oil cap 1
35 1260170 Crankshaft 1
36 180400 Bearing 1
37 1260770 Circlip 1
38 1260790 Circlip 1
39 1260750 Seal 1
40 1380520 Key 1
41 1260080 Piston pin 3
42 1260070 Guiding piston 3
43 1260091 Spacer 3
44 480480 O-Ring 3
45 1260120 Piston 3
46 1260100 Piston washer 3
47 1260110 Nut 3
1260060 Con-rod (Alum.) 3
1320140 Con-rod (Bronze) 3
49 1260162 Valve plug 6
50 960160 O-Ring 6
51 1269050 Complete valve 6
52 880830 O-Ring 6
53 1262220 Pump head 1
54 1281550 Washer 6
55 680570 Screw 6
56 180101 O-Ring 1
57 820361 Plug 1
58 880530 Plug 2
59 740290 O-Ring 2
60 1260140 Gasket support ring 3
61 1260130 H.P. gasket 3
62 1260151 Piston guide 3
63 1260420 O-Ring 3
64 1260440 L.P. gasket 3
65 1260460 Seal 3
66 1260010 Pump housing 1
67 1260050 Roller bearing 1
48
Repair Kits for Pump
Pos. Qty. Pos. Qty. Pos. Qty. Pos. Qty.
Water Seals Valves Pistons Oil Seals
Kit 1866 Kit 1864 Kit 2628 Kit 1865
60 3 51 6 43 3 33 1
61 3 52 6 44 3 39 1
63 3 45 3 65 3
64 3 46 3
47 3
Kit 2767
44 3
50 6
52 6
56 1
59 3
63 3
O-Rings
Pos. Qty.

AR620 / AR630
Combiset
See Next Page
asseMBling
1. Connect the high pressure hose to the pressure washer with the
twist fast coupler and tighten securely. Fasten wand and gun
together and connect gun/wand to high pressure hose.
Tighten all connections and replace worn
parts before starting the machine. Sudden
release of high pressure streams may result
if connections detach during use. This can
cause serious injury. Never disconnect any
part of the unit while the machine is running
or before relieving system pressure, it is
dangerous. Seek medical attention if an
injury ever occurs.
2. Remove the red plug from the pump crankcase and install the
black dipstick. Always check that the oil level is full before
operating.
3. Oil level can be checked in two places. First, on back side of
pump sight glass, level should be half way. Second, on dip stick
oil should read between the indentation on the dip stick.

oPerating instrUctions
Before starting the PressUre Washer
1. Read all safety instructions throughout the manual.
2. Place unit on dry, firm, level ground for optimum lubrication of
pump.
3. Check oil levels prior to each use.
4. Tighten all hoses and connections. Check parts and replace if
needed.
5. When the unit is attached to a pressure main and the nozzle is in
the low pressure setting, purge air from system by squeezing gun
trigger before starting machine. Let water run until there is a
steady stream of water coming out of the nozzle.
!

troUBleshooting
loW nozzle PressUre
caUses solUtions
Plugged nozzle. Clean and check for blockage.
Insufficient flow of water to the pump. Increase water flow to the pump.
Plugged inlet screen. Pull out and clean screen carefully.
Using restrictive supply hose. Use larger diameter supply hose.
sUrging PressUre
caUses solUtions
Restricted supply by under-sized Use larger fittings and clean the inlet
fittings or inlet. screen.
Insufficient flow of water to the pump. Increase water flow to the pump.
Air trapped in the pump head. Set nozzle on low pressure setting,
squeeze gun trigger before starting
machine. Start engine and run water
until air is purged out of the system.
soaP injector not Working
caUses solUtions
Adjustable nozzle set on high pressure Set nozzle to low pressure. Injector
mode. only works on low pressure setting.
Back pressure from the addition of Do not use additional high pressure
extra hose. hose.
Detergent adjustment knob turned off. Turn detergent adjustment knob
counter-clockwise to open.
Plugged injector valve. Check and clean the injector.
starting the PressUre Washer
1. Turn on the water supply to the proper gpm flow rate.
2. Plug power cord into properly grounded outlet.
3. Turn nozzle to low pressure and squeeze trigger.
4. Turn “ON/OFF” switch to the “ON” position and wait until a
constant stream of water comes out. Adjust nozzle sleeves to
achieve proper pressure and coverage area.
dUring oPeration
1. Observe all safety instructions through this manual.
2. Do not allow the machine to run with the wand not squeezed,
“OFF”, for more than 2 minutes (30 seconds with water
temperature above 80° F.)
When the wand trigger is released the pump
does not stop pumping. Water is routed through
a bypass circuit which builds up heat. If the water
temperature becomes too high, damage to the
seals, packings and other parts may result.
3. Check pump, connections and hose for water and oil leaks.
Replace worn parts.
stoPPing the PressUre Washer
1. Rinse and close the downstream chemical injector.
2. Turn the motor power switch to the “OFF” position.
3. Turn off water supply.
4. Squeeze the trigger on the wand to relieve the system water
pressure and drain as much water as possible.
5. Spray the backside of the nozzle with a lubricant and work the
nozzle back and forth from high pressure to low pressure. This
will help keep the nozzle from sticking.
6. Follow this procedure each time the machine is stopped. Having
the nozzle set at low pressure and squeezing the trigger on the
gun when you start the unit will reduce the startup load of the
unit.

!

Using the soaP injector
Your pressure washer is supplied with a downstream low pressure
soap/chemical injector. Soap is added after the water flows through
the pump. The injector is used to add liquids to the water. The
injector works only on low pressure.
To draw soap/chemical into the pressure washer, insert the filter end
of the pick-up hose into the soap/chemical. Adjust the nozzle to the
low pressure position. Do not use powders, granulars, high viscosity
detergents or acidic based detergents/chemicals in the injector.
To shutdown the injector, remove pick up tube and filter from
detergent/chemical tank and place it in a container of clear water.
Run water through the entire system to wash out the chemical you
were using.
storing the PressUre Washer
Severe damage could occur by water freezing inside the components.
To prevent costly repairs, follow these steps:
1. Make sure the unit is “OFF”, water supply is disconnected and
system pressure has been relieved.
2. Install a suction hose from the pump inlet (garden hose fitting)
into a gallon of NON-TOXIC RV anti-freeze. Following operating
instructions start the machine and squeeze trigger on the spray
gun allowing the pump to draw anti-freeze through the entire
system. Once the anti-freeze appears at the end of the wand,
turn the machine “OFF”.
3. Squeeze gun trigger to relieve pressure from system. Disconnect
the high pressure hose from the high pressure outlet and put the
hose, gun/wand and owners manual in a secure place to prevent
unauthorized people from using the machine.
4. When preparing to use the pressure washer again, simply
reconnect the high pressure hose assembly and water supply to
the unit, turn the water on and squeeze the trigger on the spray
gun to send water through the system. Dispose of the anti-
freeze/water solution safely where it will not be harmful to the
environment, people or animals.
starting the Machine after a Period of non-Use
Long periods of non-use can cause calcium and iron deposits inside
the pump. Starting the machine could cause damage to the pump.
Insert the allen key provided with the unit through the hole in the
motor end housing and rotate the motor one revolution clockwise
and counter-clockwise. Remove the key and start the motor. It
should start up easily.
Maintenance
Change oil after the first 50 hours of use. Use a SAE20 or 30 non-
detergent oil. After that, change oil every 200 hours, once a year
or when it looks milky, more frequently if used in demanding
environments. Changing oil is one of the most important and least
expensive maintenance items, it will prolong the life of your pressure
washer.
roUtine checks – do these Before every Use.
1. Check water inlet screens for signs of debris.
2. Check nozzle for debris and signs of extensive wear. Worn
nozzle will result in poor performance. Only check nozzle with
the motor turned “OFF” and the pressure relieved from the
system!
3. Check all fittings and connections for leaks and worn areas.

cleaning tiPs
The gun nozzle supplied with the pressure washer provides optimum
cleaning for universal cleaning applications if used properly.
Cleaning agents are most effective when the surface is rinsed first
to loosen dirt. After pre-rinsing to loosen dirt, then clean with
detergent.
Detergent should be applied from the bottom to the top of the
washing area. Apply detergent and allow the detergent to react
with the dirt, then rinse from the top to the bottom. This detergent
applying and rinsing technique will help to avoid streaks and skips in
the washing area.
Never use more detergent than is necessary to clean the surface.
Always follow directions supplied by the detergent manufacturer on
the container.
For best spraying results, hold the gun 6-12” away from the washing
surface and use long, slow deliberate side to side strokes, similar to
using a paint sprayer. This technique will provide the most effective
cleaning impact and minimize streaks and skips in the cleaning
process. Waving the spray gun aimlessly across the surface wastes
water and expensive detergent and prolongs the cleaning process.
If the pressure washer is used to apply wax, the gun should be held
further from the surface to optimize the “misting” effect when
applying the wax. For best results, follow the directions supplied by
the wax manufacturer.
gUn, Wand and nozzle
Hold the gun/wand in the normal operating position. Turn the
nozzle sleeve clockwise for a fan spray and counterclockwise for
a stream. (Pull the nozzle sleeve forward for high pressure while
pushing the sleeve away from the gun for low pressure.) After
shutting down the unit and draining the hose, spray a lubricant,
such as WD40, on the backside of the nozzle and work the nozzle
back and forth from high to low pressure. This will help prevent
the nozzle from sticking. Examine nozzle tip for blockage only with
pressure washer “OFF” and pressure relieved from system.
setting nozzle PressUre / cheMical injection
high PressUre
1. For high pressure pull back on nozzle. Make sure to keep all
parts of hand away from out coming water.
Diagram A
loW PressUre
2. For low pressure and chemical suction push the nozzle forward.
Keep all parts of hand away from out coming water.
Diagram B
fan sPray
3. For adjusting the water spray pattern turn nozzle clockwise for
wide spray fan pattern and counter clockwise for narrow stream
spray pattern.
Diagram C


high PressUre

loW PressUre



!
!