Hotsy 1.109-037.0 Operator'S Manual Download Page 1

Page: 1 / 42

8.941-246.0-Y 07/29/22

771/772

Hot Water - Gas Fired

Operator’s Manual

Pressure Washer

MODELS:

771

1.109-611.0

772

1.109-037.0

For the Hotsy Dealer nearest you,

consult our web page at

www.hotsy.com

Summary of Contents for 1.109-037.0

Page 1: ...8 941 246 0 Y 07 29 22 771 772 Hot Water Gas Fired Operator s Manual Pressure Washer MODELS 771 1 109 611 0 772 1 109 037 0 For the Hotsy Dealer nearest you consult our web page at www hotsy com ...

Page 2: ...2 Hotsy 771 772 8 941 246 0 Y Machine Data Label ...

Page 3: ...onent Identification 10 Assembly Instructions 11 Installation Instructions 12 Operation Instructions 16 Maintenance Storage 18 Pump 18 Heating Coil 19 Troubleshooting 20 Parts Hotsy 771 772 Left Side 24 Hotsy 771 772 Right Side 25 Coil Outlet 28 Control Panel 30 Detergent Injector 32 Float Tank 33 Burner 34 Hose Gun Wand 35 Pump 36 VBT Unloader Valve 38 HFP Series Pump 40 Hotsy 771 772 8 941 246 0...

Page 4: ...e 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 Storage Pump Heating Coil Troubleshooting The PARTS LIST section contains assembled parts illustrations and corresponding parts list The parts lists include a number of columns of in...

Page 5: ...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 engine without proper instructions SAVE THESE INSTRUCTIONS This manual should be considered a permanent part o...

Page 6: ...tal electric shock may result 6 To protect the operator from electrical shock the machine must be electrically grounded It is the responsibility of the owner to connect this 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 servi...

Page 7: ...erious bodily injury and or property damage Follow storage instructions specified in this manual 14 Inlet water must be clean fresh water and no hotter then 90 F WARNING Risk of asphyxiation Use this product only in a well ventilated area 15 Avoid installing machines in small areas or near exhaust fans Adequate oxygen is needed for combustion or dangerous carbon monoxide will result 16 Manufacture...

Page 8: ...allow acids caustic or abrasive fluids to pass through the pump 28 Never run pump dry or leave spray gun closed longer than 1 2 minutes 29 Before disconnecting discharge hose from water outlet turn burner off and open spray gun to allow water to cool below 100 before stopping the machine Then open the spray gun to relieve pressure Failure to properly cool down or maintain the heating coil may resu...

Page 9: ...GPM 180 GPH 1500 PSI LP Gas Fired 376 000 BTU Hr 230VAC 60Hz 1Ph 13 Amps 772 3 0 GPM 180 GPH 1500 PSI Natural Gas Fired 378 000 BTU Hr 230VAC 60Hz 1Ph 13 Amps Model Machine Weight Shipping Weight Exhaust Stack Size Machine Dimensions 771 355 Lbs 390 Lbs 10 L 31 5 X W 20 X H 36 5 772 355 Lbs 390 Lbs 10 L 31 5 X W 20 X H 36 5 Hotsy 771 772 8 941 246 0 Y ...

Page 10: ... spray gun Relief Valve Secondary pressure release in the unlikely event the unloader valve fails Unloader Valve Safety device which when the spray gun closes prevents over pressurization Hotsy 771 772 8 941 246 0 Y W A R N IN G H on ey w el l PV MV M P V V O N O FF PS I IN OF F F 10 0 203 3 200 165 130 95 235 270 30 0 TEMPERATURE BURNER RES ET PILO T LIGHT PUMP ON OFF MO TO R OV ER LO AD PUS H TO...

Page 11: ...sconnect Quick Disconnect Plug Tools Required 10 Adjustable Wrench 1 ea Medium Phillips Head Screwdriver 1 ea Large Slotted Head Screwdriver 1 ea 3 16 Allen Wrench 1 ea Pipe Thread Sealing Compound For Gas Con nectors Teflon Tape 1 Install Hose GFCI Cord Hanger on coil tank as shown Pressure Hose Trigger Gun and Wand 1 When assembling use teflon tape on all plumbing connections to prevent leakage ...

Page 12: ...here Be sure the flue is the same size as the burner exhaust vent on the pressure washer lid Poor draft will cause the pressure washer to soot and not operate properly When selecting the location for installation beware of poorly ventilated locations or areas where exhaust fans may cause an insufficient supply of oxygen Proper combustion can only be obtained when there is a sufficient supply of ox...

Page 13: ...a level is the jurisdiction of local authorities You should not readjust the burner ring gas pressure If you replace your gas valve you will need to adjust the new valve Refer to your machine s specifica tion plate for the correct pressure setting Follow the installation and adjustment instructions provided with your replacement valve NOTE Air for combustion and ventilation along with exhaust flue...

Page 14: ...ng 12 Install the replacement spring supplied in the Natural Gas Conversion Kit 13 Install the new plastic pressure regulator adjust ment screw Assure that the screw top is flush with the regulator top 14 Replace the natural gas pilot Inspect compression fittings on aluminum gas line If fittings are damaged replace with compression fitting supplied with orifice kit To replace compression fittings ...

Page 15: ...o several compo nents within the washer Before starting disconnect gas and electrical power supply from the machine You will need the following items Gas pressure gauge or gas manometer 10 Adjustable wrench Medium Phillips head screwdriver Large slot head screwdriver 3 16 Allen wrench 44 gas nozzles 66 orifice Part Number 908260 LP Vapor gas pilot Part Number 829858 LP Vapor gas conversion kit Par...

Page 16: ...apor Fuel and Converting to Natural Gas 5 Check pump oil level 6 If detergents are to be used only use detergents intended for pressure washers Follow instructions on the detergent container IMPORTANT Before installing nozzle on initial start up turn on the water supply and pump switch and allow water to run from the end of the wand until clear to prevent the nozzle from clogging IMPORTANT If the ...

Page 17: ...t metering valve on the chassis allows the detergent flow to be controlled 2 Adjust the width of the pressure nozzle spray pattern to meet your cleaning needs Adjustment is made by rotating the outer housing of the pressure nozzle The spray pattern can be adjusted from 0 degrees solid stream to 80 fan spray Release the trigger of the trigger gun prior to making any spray pattern adjustments 3 Wash...

Page 18: ...achine and remove the coil drain plug After coil has drained replace pressure hose and coil drain plug If the pressure washer is not to be used for an extended length of time it is recommended that the system be flushed with antifreeze for rust protection Maintenance WARNING Unauthorized machine modification or use of non approved replacement parts may cause personal injury and or property damage ...

Page 19: ... nut bolt until the valve stops leaking Open and close the trigger gun and if water squirts out the valve when you close the trigger gun turn clockwise one full turn until there is no leaking when the trigger gun is closed 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 ...

Page 20: ...Before Starting Step 9 LOW SPRAY PRESSURE AT NOZZLE Inadequate water supply Fully open faucet Check for kinked or damaged hose Use 5 8 inch minimum hose Check for debris clogging inlet screen Partially clogged or damaged nozzle Clean or replace Air being drawn through detergent inlet line Refill detergent container Ensure that pick up screen is fully immersed UNEVEN SPRAY PATTERN Partially clogged...

Page 21: ...as valve on Pressure switch not operative Test pressure switch and replace if defective Manual valve on gas supply line is closed Open valve Low service supply pressure Refer to Using LP Vapor Gas From A Portable Bottle or Converting To Natural Gas and sections on how to check and set incoming pressure Air in gas line Refer to Before Starting step 10 Defective pilot flame rod Replace Defective pri...

Page 22: ...22 Notes Hotsy 771 772 8 941 246 0 Y ...

Page 23: ...23 Parts Parts 1 109 611 0 1 109 037 0 HOTSY 771 772 Hotsy 771 772 8 941 246 0 Y ...

Page 24: ...r Detail See Detergent Injector Illus For Detail See Burner Assy Illus For Detail See Float Tank Illus For Detail See Pump Illus 27 24 3 26 46 20 40 35 40 33 8 9 37 10 48 47 7 32 41 41 38 38 39 30 29 23 8 9 31 13 16 22 25 20 21 14 15 Location Of 1st Serial Plate Location Of 2nd Serial Plate Inside Of Frame Hotsy 771 772 8 941 246 0 Y ...

Page 25: ...25 Hotsy 771 772 8 941 246 0 Y Hotsy 771 772 Right Side WARNING OF F F 10 0 2033 200 165 130 95 235 270 30 0 TE MPERATU RE BURNER PUMP ON OFF 1 4 49 12 28 36 42 34 2 6 11 18 17 43 19 44 5 25 45 ...

Page 26: ... 8 900 989 0 1 DECAL WARNING 12 8 719 935 0 1 RING INSUL RETAIN 13 8 911 998 0 1 FRONT PANEL 14 8 912 000 0 1 BACK PANEL 15 9 802 907 0 1 INSULATION 16 8 706 732 0 1 SNAP BUSHING 17 8 711 785 0 1 HOSE 3 8 18 8 757 338 0 1 NIPPLE 1 2 HEX STEEL W SLNT 19 8 918 211 0 1 HOSE 3 8 X 40 2 WIRE 20 9 802 778 0 6 FLANGE NUT 5 16 21 8 718 980 0 2 FLAT WASHER 5 16 22 8 718 648 0 1 U BOLT 1 4 20 X 1 1 4 X 2 1 ...

Page 27: ... 1 RETAINING CLIP 36 8 911 999 0 1 HOSE GFCI CORD HANGER 37 9 803 544 0 1 GROMMET 2 1 8 38 9 802 104 0 3 SNAP BUSHING 1 1 8 39 8 901 136 0 1 DECAL DETERGENT 40 8 718 588 0 2 SCREW 10 24 X 1 2 41 8 718 863 0 2 NUT 10 24 ESNA 42 8 717 446 0 1 INSULATION 43 8 757 625 0 1 PLUG 1 2 NPTF SQUARE HEAD 44 8 757 508 0 1 ADAPTER STEEL 1 2 SAE M X 1 2 NPTF M 45 8 758 328 0 2 LABEL HOT CALIENTE W ARROWS 46 8 7...

Page 28: ...28 Coil Outlet 1 5 3 4 2 6 Hotsy 771 772 8 941 246 0 Y ...

Page 29: ...TES 1 8 757 240 0 1 MANIFOLD COIL OUTLET DISCHARGE W SLNT 2 9 196 012 0 1 SCREW 10 24 X 1 4 HEX SET 3 8 902 433 0 1 VALVE SAFETY RELIEF VSA 4 9 802 171 0 1 NIPPLE 3 8 X 3 8 NPT ST MALE 5 8 757 241 0 1 PLUG 3 8 NPTF ALLEN COUNTER SUNK W SLNT 6 8 711 785 0 30 HOSE 3 8 PUSH ON ...

Page 30: ...30 Control Panel Hotsy 771 772 8 941 246 0 Y WARNING GROUND 19 5 4 11 6 24 20 20 8 7 22 28 10 9 7 17 18 12 29 30 26 14 8 23 26 25 27 1 3 21 2 24 15 16 ...

Page 31: ... CORD 18 3 13 9 804 072 0 10 WIRE COVER 14 9 802 587 0 16 INSULATION 15 8 716 510 0 1 TERMINAL HOUSING 16 8 716 508 0 3 TERMINAL 17 9 802 458 0 1 SWITCH PRESSURE N O 1 4 NPT SS 8 717 667 0 1 O RING KIT 8 717 256 0 1 SWITCH 18 8 758 338 0 1 LABEL WARNING SERVICE CORD 19 8 716 054 0 1 ROCKER SWITCH 20 8 718 936 0 4 SCREW 8 X 1 2 ZINC 21 8 758 327 0 1 LABEL GROUND SYMBOL 22 8 716 900 0 1 TRANSFORMER ...

Page 32: ...EF PART NO QTY DESCRIPTION NOTES 1 8 707 056 0 1 FILTER SCREEN 2 6 390 126 0 3 HOSE CLAMP 3 9 802 252 0 48 TUBING 1 4 BRAIDED 4 9 802 188 0 1 METERING VALVE 2 4 2 3 2 1 To Pump To Detergent Supply Hotsy 771 772 8 941 246 0 Y ...

Page 33: ...4 8 706 939 0 1 LOCKNUT 1 2 NPT 5 8 707 017 0 1 NIPPLE 1 2 X 3 8 90 6 8 706 641 0 1 TANK WITH COVER 7 8 707 311 0 1 FLOAT VALVE ADAPTER 8 8 707 310 0 1 VALVE FLOAT BRASS HOTSY 921369 9 9 804 082 0 2 WASHER 1 4 10 8 707 312 0 2 NUT 1 BRASS 11 9 802 147 0 1 SWIVEL 3 8 X 3 4 W STRAINER 12 9 802 759 0 2 SCREW 10 32 X 1 2 13 8 709 117 0 1 CLAMP HOSE 1 2 3 4 5 12 9 8 7 10 11 6 To Pump 13 ...

Page 34: ...NUT 5 16 WHIZ LOC FLANGE 6 8 718 980 0 6 FLAT WASHER 5 16 7 9 802 713 0 1 BOLT 5 16 18 X 1 1 2 8 8 718 101 0 PILOT NATURAL GAS 772 8 718 100 0 1 PILOT LP 771 9 9 802 911 0 18 TUBING 1 4 ALUMINUM 10 9 802 700 0 2 BOLT 1 4 20 X 3 4 NC HH 612937 11 8 718 744 0 1 SCREW 8 32 X 3 8 STAINLESS STEEL 12 8 719 957 0 1 PILOT BRACKET 13 8 706 110 0 1 PIPE NIPPLE 3 4 X 8 Hotsy 771 772 8 941 246 0 Y H o n e y w...

Page 35: ...2 164 0 1 QUICK DISCONNECT 3 8 725 389 0 1 WAND SINGLE 36 INSULATED W SIDE GRIP 8 717 661 0 1 INSULATOR GRIP ASSEMBLY 8 706 670 0 1 SIDE HANDLE 8 701 663 0 1 VALVE ASSEMBLY UNITIZED 4 8 712 402 0 1 ADJUSTABLE NOZZLE 5 8 751 235 0 1 GUN HOTSY H1050 5000 PSI 10 4 GPM 6 8 739 011 0 1 HOSE 3 8 X 50 1 WIRE TUFF SKIN 4 5 1 2 3 6 ...

Page 36: ...36 Pump 14 1 11 3 11 12 5 7 8 6 2 To Coil Inlet To Float Tank To Detergent Injector 4 10 9 13 15 Hotsy 771 772 8 941 246 0 Y ...

Page 37: ...58 080 0 1 BARB BRASS 3 8 X 3 8 NPTF M 6 8 757 935 0 1 ADAPTER STEEL 1 2 JIC X 3 8 NPTF F 90 7 8 757 191 0 1 ELBOW 3 8 STREET BRASS 8 8 711 785 0 13 HOSE 3 8 PUSH ON 9 9 802 252 0 12 TUBING 1 4 BRAIDED 10 6 390 126 0 1 HOSE CLAMP 11 8 757 906 0 2 ADAPTER STEEL 1 2 BSPP M X 3 8 NPTF F 12 8 758 079 0 1 ADAPTER STEEL 3 8 BSPP F X 3 8 NPTF M 13 8 709 117 0 1 CLAMP HOSE 14 9 804 022 0 1 CAP VALVE 22MM ...

Page 38: ... RING Ø2 62 X 20 24 SEE KITS TABLE 6 9 803 908 0 1 BACKUP RING SEE KITS TABLE 7 9 803 907 0 1 GUIDE BUSHING 8 9 803 906 0 1 O RING Ø1 78 X 14 SEE KITS TABLE 9 8 754 959 0 1 BALL SUBASSEMBLY 696 0 703 0 SEE KITS TABLE 8 754 932 0 1 BALL SUBASSEMBLY 700 0 701 0 702 0 10 8 754 933 0 1 SEAT SEE KITS TABLE 11 8 754 934 0 1 O RING Ø1 78 X 12 42 SEE KITS TABLE 12 8 754 935 0 1 VALVE BODY 1 2 3 4 5 10 6 7...

Page 39: ...017 0 1 POPPET SPRING SEE KITS TABLE 22 8 754 939 0 1 POPPET SEE KITS TABLE 23 8 754 940 0 1 O RING Ø3 X 6 SEE KITS TABLE 24 8 754 961 0 1 PLATE 696 0 703 0 SEE KITS TABLE 9 803 922 0 1 PLATE 700 0 701 0 702 0 25 8 730 870 0 1 SPRING 1500 3000 PSI 700 0 701 0 702 0 SEE KITS TABLE 8 933 018 0 1 SPRING 1500 4000 PSI 696 0 703 0 26 8 933 021 0 1 SET SCREW 27 9 803 925 0 1 NUT 28 9 803 926 0 1 KNOB BR...

Page 40: ...ALVE ASSEMBLY SEE KITS TABLE 13 9 803 948 0 6 O RING Ø1 78 X 18 77 SEE KITS TABLE 14 9 803 949 0 6 VALVE PLUG 15 8 754 850 0 2 WASHER LOCK 16 8 929 349 0 2 BOLT MANIFOLD M14 X 60 SEE KITS TABLE 17 9 803 198 0 1 WASHER COPPER G13 8 18 8 707 262 0 2 PLUG BRASS G3 8 19 9 803 202 0 1 SIGHT GLASS G3 4 20 9 803 906 0 1 O RING Ø1 78 X 14 21 6 VALVE SEAT SEE KITS TABLE Hotsy 771 772 8 941 246 0 Y SPECS TO...

Page 41: ...OLT PLUNGER SEE KITS TABLE 39 8 754 092 0 3 SPACER COPPER SEE KITS TABLE 40 8 754 848 0 3 PLUNGER 16MM 2030S 2830S SEE KITS TABLE 8 754 849 0 3 PLUNGER 14MM 2030F 2830F 3530F SEE KITS TABLE 41 9 803 962 0 3 SPACER COPPER SEE KITS TABLE 42 8 759 032 0 3 PLUNGER ROD 43 9 803 965 0 3 CONNECTING ROD PIN 44 9 803 966 0 3 CONNECTING ROD 45 8 933 020 0 6 SCREW CONNECTING ROD 46 8 754 847 0 1 O RING Ø2 62...

Page 42: ...ocal Hotsy dealer or visit www Hotsy com Smart phone users scan the code below to link directly to the Service Request page To REGISTER your pressure washer please visit our Warranty Registration page at www hotsy com WarrantyRegistration aspx or scan the code below with your smart phone ...

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