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Landa MHC
Hot Water - Gasoline Powered - Diesel/Oil Heated
Operator's Manual
E
0 0
3 5
C 4
M H
Pressure Washer
MODELS:
MHC3-25124
MHC4-30324
MHC4-35324E
MHC3-30324
MHC4-30324E/S
MHC4-30324E
For the Landa Dealer nearest
you, consult our web page at
www.landa.com
9.800-950.0-V
®
1.110-037.0
1.110-039.0
1.110-042.0
1.110-038.0
1.110-041.0
1.110-040.0
07/19/17
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Table of Contents
Related Manuals for Landa MHC3-25124
Summary of Contents for Landa MHC3-25124
- Page 1 Landa MHC Hot Water - Gasoline Powered - Diesel/Oil Heated Operator’s Manual Pressure Washer MODELS: MHC3-25124 1.110-037.0 MHC4-30324 1.110-039.0 MHC4-35324E 1.110-042.0 MHC3-30324 1.110-038.0 MHC4-30324E/S 1.110-041.0 MHC4-30324E 1.110-040.0 For the Landa Dealer nearest you, consult our web page at www.landa.com 9.800-950.0-V 07/19/17...
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Page 2: Machine Data Label
Machine Data Label Landa MHC 9.800-950.0 - V... -
Page 3: Table Of Contents
Parts Landa MHC......24 Landa MHC Coil ......25 Landa MHC. -
Page 4: How To Use This Manual
• Burner Nozzle Sales Representative: • Landa Surefire Oil Burner • Landa Surefire Burner Air Adjustment The model and serial number of your machine is • Fuel Pressure Adjustment located on the back of the machine. • Removal of Soot and Heating Coil •... -
Page 5: Safety
When ordering parts, please specify model and serial number. Use only identical replacement parts. This machine is to be used only by trained operators. Landa MHC 9.800-950.0 - V... -
Page 6: Important Safety Information
10. Use No. 1 or No. 2 heating oil (ASTM D306) only. NEVER use gasoline in your fuel oil tank. Gasoline is more combustible than fuel oil and could result in a serious explosion. NEVER use crankcase or Landa MHC 9.800-950.0 - V... - Page 7 RISK OF INJECTION sharp objects. Inspect condition of high pressure OR SEVERE INJURY severe injury or death will result. TO PERSONS. KEEP hose before using or bodily injury may result. CLEAR OF NOZZLE. Landa MHC 9.800-950.0 - V...
- Page 8 28. Use only kerosene, No. 1 home heating fuel, or diesel in burner fuel tank. If diesel is used, add a soot remover to every tankful. Follow the maintenance instructions specified in the manual. Landa MHC 9.800-950.0 - V...
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Page 9: Operations
Wand — Must be connected to the spray gun. protector onto floor. This system prevents internal pump damage. High Pressure Hose — Connect one end to water pump high pressure discharge nipple and the other end to spray gun. Landa MHC 9.800-950.0 - V... -
Page 10: Assembly Instructions
Use a Group U1 garden by using the dipstick on the top of tractor style type of battery rated for the pump. 300 CCA (battery not included). CAUTION: These machines are intended to be protected from outside environments. Landa MHC 9.800-950.0 - V... -
Page 11: Operation Instructions
Burner will light automatically. NOTE: High pressure nozzle must be inserted at end of wand to obtain high pressure. To apply soap read Detergents and General Operating NOTE: Do not start machine with Techniques section. burner switch on. Landa MHC 9.800-950.0 - V... -
Page 12: Detergents And General Operating Techniques
Select and install the water onto the ground. This thermal device prevents desired high pressure nozzle. NOTE: You can also stop internal damage to the pump. detergent from flowing by simply removing detergent siphon tube from bottle. Landa MHC 9.800-950.0 - V... -
Page 13: Shutdown Instructions
(1) gallon of fresh water. Pull water to cool below 100° F. trigger on spray gun and siphon water for one minute. STEP 4: Turn off water supply. STEP 5: Open spray gun to relieve remaining pressure. Landa MHC 9.800-950.0 - V... -
Page 14: Maintenance
5. Do not allow acidic, caustic or abrasive fluids to be instructions: pumped through system. 1. Replenish engine oil to upper level. 6. Always use high grade quality Landa cleaning 2. Drain gasoline from fuel tank, fuel line, fuel valve products. and carburetor. -
Page 15: Maintenance And Service
Maintenance Maintenance And Service Periodic descaling of the heating coil is recom- mended so please consult your local Landa Dealer for instructions. Unloader Valves Unloader valves are preset and tested at the factory Rupture Disk before shipping. Tampering with the factory setting may... -
Page 16: Burner Nozzle
Tighten locking screws. Landa MHC Burner Air Adjustment For higher altitudes, the air band opening may need to CAUTION: If white smoke appears from burner be increased; for lower altitude, the .air band may need exhaust vent during start-up or operation, discon- to be decreased. -
Page 17: Removal Of Soot And Heating Coil
For such motors to run properly, the battery and engine charging system must be kept in good condi- tion, and the engine must run fast enough to adequately charge the battery. Do not throttle down the engine for any length of time. Landa MHC 9.800-950.0 - V... -
Page 18: Troubleshooting
Test and replace. 12V DC relay defective Test and replace. Check fuel pump for proper flow. Check solenoid flow Fuel is not reaching combustion chamber switch on machines with spray gun control for proper on-off flow control. Landa MHC 9.800-950.0 - V... - Page 19 Check and replace if necessary. Tighten all clamps. Check detergent lines for Air is leaking holes. DETERGENT Filter screen on detergent suction hose is Clean or replace. DRAWING plugged Detergent has high viscosity Dilute detergent to specifications. Landa MHC 9.800-950.0 - V...
- Page 20 Replace switch. WILL NOT RUN There is a loose wire Check and replace or tighten wiring. Burner motor is defective Replace motor. RELIEF VALVE Relief valve is defective Replace or repair relief valve. LEAKS WATER Landa MHC 9.800-950.0 - V...
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Page 21: Preventative Maintenance
Check pump oil level before first use of your new Power Washer. Change pump oil after first 50 hours and every month or 500 hours thereafter. Use SAE 10W-40 non-foaming oil. Estimated Operating Estimated Operating Date Oil Changed Date Oil Changed Hours Since Last Oil Hours Since Last Oil Month/Day/Year Month/Day/Year Change Change Landa MHC 9.800-950.0 - V... - Page 22 Notes Landa MHC 9.800-950.0 - V...
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Page 23: Parts
Parts Parts LANDA MHC MHC3-25124 1.110-037.0 MHC4-30324 1.110-039.0 MHC4-30324E 1.110-042.0 MHC3-30324 1.110-038.0 MHC4-30324E/S 1.110-41.0 MHC4-30324E 1.110-040.0 Landa MHC 9.800-950.0 - V... -
Page 24: Landa Mhc
Landa MHC Detail See Pump Illus. Details See Control Box Illus. 69, 70 Landa MHC 9.800-950.0 - V... -
Page 25: Landa Mhc Coil
Landa MHC Coil Landa MHC 9.800-950.0 - V... -
Page 26: Landa Mhc
8.709-090.0 CLIP, .75 ID ROUND (ELEC. START) 8.709-152.0 FILTER, FUEL, DISPOSABLE 9.802-896.0 INSULATION, BLANKET, NO FOIL 24" X 57" 8.731-284.0 FIBER, DISK DONUT, HORZ MHC 8.735-002.0 FIBER, DISK, HORIZ MHC 8.705-445.0 NIPPLE, 3/8" X 4" Landa MHC 9.800-950.0 - V... - Page 27 SWIVEL, 1/4" JIC FEM, PUSH-ON 9.802-154.0 PLUG, PUSH-ON, OIL DRAIN, HONDA 9.802-170.0 COUPLER, 3/8 PLUG, FEM STEEL 9.803-559.0 CLAMP,SCREW, 9/16"W, 1-1/4"D, SS 9.802-193.0 15" GASKET, NEOPRENE, 9.802-207.0 CLAMP, ROUND, 0.687 DIA 8.709-069.0 CLAMP, SCREW 5/16"W, 1/4-5/8" D, SS Landa MHC 9.800-950.0 - V...
- Page 28 WASHER, 5/16 LOCK (7 HP ROBIN) 9.149-003.0 MANIFOLD, COIL OUTLET 9.802-959.0 KEY, 0.247 SQR X 2.125" (HONDA) 9.802-958.0 KEY.185 X 1.75 (ROBIN) 9.802-961.0 HOSE, CONNECTION BRACKET 9.802-996.0 BRACKET, BRAKE PAD, BLACK 9.802-997.0 LINKAGE, BRAKE, BLACK Landa MHC 9.800-950.0 - V...
- Page 29 BOLT, 8MM X 16MM HONDA 9 HP 114 9.802-254.0 14 in HOSE, 1/4" PUSH-ON 115 9.802-695.0 NUT, 10/32 KEPS (ELEC. START) NUT, 10/32 KEPS (PULL START) 116 9.803-277.0 SCREW, 5/16" X 1/2", WHIZ LOC 8.754-911.0 CHECK VALVE, 1 WAY, 1/4" BARB Landa MHC 9.800-950.0 - V...
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Page 30: Control Panel
Control Panel Landa MHC 9.800-950.0 - V... - Page 31 NUT, 6-32 KEPS (ELEC START) NUT, 6-32 KEPS (PULL START) 9.802-791.0 NUT, CAGE, 10/32" X 16 GA. 9.802-794.0 NUT, CAGE, 1/4" X 12 GA 8.750-097.0 KNOB, THERMOSTAT, 120°C/240°F 8.712-190.0 BEZEL, THERMOSTAT 8.718-779.0 SCREW, 4MM X 6MM Landa MHC 9.800-950.0 - V...
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Page 32: Downstream Injector
Downstream Injector #9.802-225.0 PART NO. DESCRIPTION NOTES 9.802-216.0 INJECTOR, DET, NON-ADJUST #3 6.390-126.0 CLAMP, HOSE 9.802-251.0 6 ft. TUBE, 1/4" X 1/2", CLEAR VINYL 8.707-057.0 STRAINER, 1/4", HOSE BARB Landa MHC 9.800-950.0 - V... -
Page 33: Hose & Spray Gun
8.712-331.0 NOZZLE, SAQCMEG 0003, RED (3-3000, 3-25124) 8.712-334.0 NOZZLE, SAQCMEG 2503, GREEN (3-3000, 3-25124) 8.712-335.0 NOZZLE, SAQCMEG 4003, WHITE (3-3000, 3-25124) 8.707-139.0 COUPLER, 1/4"PLUG, MALE, STEEL/ZINC NOT SHOWN 9.802-164.0 COUPLER, 1/4"SOCKET, FEMALE, BRASS NOT SHOWN Landa MHC 9.800-950.0 - V... -
Page 34: Pump - 8.915-322.0
Pump - 8.915-322.0 8.915-322.0 • MHC3-25124 PART NO. DESCRIPTION NOTES 8.923-757.0 PUMP, LANDA LP2535G, 2.5@3500, 3400 RPM 8.754-696.0 UNLOADER, VBT BANJO, 3000PSI 8.707-256.0 PUMP PROTECTOR, 140° 8.933-006.0 SWITCH, FLOW MV60 8.706-207.0 ELBOW, 3/8", STREET 90 DEG, STEEL 9.802-039.0 ELBOW, 1/2" JIC X 3/8" MPT 9.802-132.0... -
Page 35: Pump - 8.915-321.0
Pump - 8.915-321.0 8.915-321.0 MHC3-30324 PART NO. DESCRIPTION NOTES 8.923-759.0 PUMP, LANDA LP3035G1, 3.0@3500, 3400 RPM 8.754-700.0 UNLOADER, VBT BANJO, 4000PSI 8.707-256.0 PUMP PROTECTOR, 1/2" PTP, 140° 8.933-006.0 SWITCH, FLOW MV60 9.802-190.0 VALVE, EZ START, 3/8 MPT X 1/8 FPT 8.706-207.0... -
Page 36: Pump - 8.918-611.0
Pump - 8.918-611.0 8.918-611.0 MHC4-30324, 4-30324E, 4-30324E/S, 4-35324E Landa MHC 9.800-950.0 - V... - Page 37 Pump - 8.918-611.0 PART NO. DESCRIPTION NOTES 8.751-176.0 PUMP, LANDA LS3540G, 3.5 @ 4000, 3400 RPM 9.803-900.0 UNLOADER 9.803-670.0 PUMP PROTECTOR, 1/2",190° 8.933-006.0 SWITCH, FLOW MV60 9.802-190.0 VALVE, EZ START, 3/8 MPT X 1/8 FPT 8.706-168.0 ELBOW, 3/8" MALE, PIPE 8.706-955.0...
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Page 38: Lp Series Pump
SEE KITS TABLE 9.803-948.0 O-RING Ø1.78 X 18.77 SEE KITS TABLE 9.803-949.0 VALVE PLUG 8.754-854.0 BOLT, MANIFOLD M14 X 40 8.754-850.0 WASHER, LOCK 9.803-198.0 WASHER, COPPER G3/8 8.707-262.0 PLUG, BRASS G3/8 VALVE SEAT SEE KITS TABLE Landa MHC 9.800-950.0 - V... - Page 39 Plunger Oil KIT DESCRIPTION 14 mm 14 mm 14 mm Valve Seals ITEM NUMBERS 4, 6, 8 4, 5, 6, 7, 8 36, 37, 38, 39 12, 13, 14 INCLUDED NUMBER OF CYLINDERS KIT WILL SERVICE Landa MHC 9.800-950.0 - V...
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Page 40: Ls.3 Series Pump
SEE KITS TABLE 9.803-193.0 O-RING Ø2.62 X 20.29 SEE KITS TABLE 9.802-928.0 VALVE PLUG 9.802-938.0 MANIFOLD STUD BOLT 9.802-884.0 WASHER 9.803-198.0 COPPER WASHER 3/8" 9.802-925.0 BRASS PLUG 3/8" 9.803-210.0 WASHER, M6 X 16 9.802-939.0 HEXAGONAL SCREW Landa MHC 9.800-950.0 - V... - Page 41 U-Seal Packing 15 mm 15 mm Valve Seals 15 mm ITEM NUMBERS 46, 47, 48, 49, 3, 5, 7 3, 4, 5, 6, 7, 11, 12, 13 INCLUDED 50, 51 NUMBER OF CYLINDERS KIT WILL SERVICE Landa MHC 9.800-950.0 - V...
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Page 42: Vbt Unloader Valve
O-RING, Ø1.78 X 14 SEE KITS TABLE (696.0, 703.0) 8.754-959.0 BALL SUBASSEMBLY SEE KITS TABLE 8.754-932.0 BALL SUBASSEMBLY (700.0, 701.0, 702.0) 8.754-933.0 SEAT SEE KITS TABLE 8.754-934.0 O-RING, Ø1.78 X 12.42 SEE KITS TABLE 8.754-935.0 VALVE BODY Landa MHC 9.800-950.0 - V... - Page 43 NUMBERS 8, 11,15, 8, 11,15, 22, 23 22, 23 11, 24, 25 24, 25 11, 24, 25 INCLUDED 20, 23 20, 23 FITS 696.0,700.0, 696.0,700.0 700.0, 703.0 703.0 696.0 703.0 UNLOADER 701.0, 702.0 701.0,702.0 701.0,702.0 Landa MHC 9.800-950.0 - V...
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Page 44: Vba 35 Unloader Valve
VBA 35 Unloader Valve 9.803-900.0 Landa MHC 9.800-950.0 - V... - Page 45 BANJO BOLT 3/8" (SOLID CAP) 9.803-921.0 SEAL WASHER 1/2 PLATE KIT C SPRING KIT C 8.933-021.0 SET SCREW 9.803-925.0 9.803-926.0 BRASS HANDLE KIT A 8.717-672.0 O-RING REPAIR KIT KIT B 8.717-673.0 OUTLET KIT KIT C 8.717-674.0 STEM REPAIR KIT Landa MHC 9.800-950.0 - V...
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Page 46: Wayne Burner
Wayne Burner Landa MHC 9.800-950.0 - V... - Page 47 NOT SHOWN 8.756-740.0 JUNCTION BOX, MSR, BLACK BODY 8.756-743.0 PLUG, HOLE, JUNCTION BOX, M&E NOT SHOWN 8.700-819.0 CAD CELL F/HS & M SERIES BURNE 63355-001 CONTROL BOX 8.756-661.0 TIMER, BURNER DROP-OUT 62899 COVER, CONTROL BOX Landa MHC 9.800-950.0 - V...
- Page 48 ® 9.800-950.0 • Printed in U.S.A.
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