OPERATOR’S MANUAL PRESSURE WASHERS Electrically Heated Mi-T-M® CORPORATION, 8650 Enterprise Drive, Peosta, IA 52068 Tel: (800) 553-9053 Fax: (563) 556-1235 e-mail: corp@mitm.com Website: http://www.mitm.
TABLE OF CONTENTS Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pre-Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6 Changing Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Safety Components . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT SAFETY INSTRUCTIONS 1. Read all safety and operating instructions before using the unit. 2. Read all electrical hook up instructions. 3. Read warnings on additive containers. 4. Ventilate work area when using toxic or pungent additives to reduce your exposure to toxic fumes. 5. Use protective wear, especially for the eyes and skin. 6. Be careful of slippery floors. Some additives make a normally safe area extremely slippery and dangerous. 7. Keep children away from the machine and wash area. 8.
PRE-OPERATING INSTRUCTIONS When unpacking the unit, if you find damage due to shipping, contact your dealer or Mi-T-M Corporation immediately, ELECTRICAL SUPPLY Arrange with an electrician to install a properly grounded, three phase service. To protect the receptacle from splashes, the recommended height above the ground level is a minimum of four feet. A ground fault interrupter (GFI) should be used. Make sure the supply voltage is correct.
OPERATING INSTRUCTIONS When unpacking the unit, if you find damage due to shipping, contact your dealer or Mi-T-M Corporation immediately, HOT PRESSURE WASHER MODE (P Units only) SET-UP PROCEDURE: 1. Connect water supply to inlet on back of unit (minimum pressure 15 psi and maximum inlet pressure 60 psi) (maximum temperature 55° F or 13° C). 2. Connect high pressure hose and trigger gun to outlet on lower front of unit. 3.
OPERATING INSTRUCTIONS Continued HOT PRESSURE WASHER MODE (PS Units only) SET-UP PROCEDURE: 1. Connect water supply to inlet on back of unit (minimum pressure 15 psi and maximum inlet pressure 60 psi) (maximum temperature 55° F or 13° C). 2. Connect high pressure hose and trigger gun to outlet on lower front of unit. OPERATING PROCEDURE: Control (see 'Electrical Control Panel') Number 3 1. Turn selector switch on the Electrical Panel to "Pressure Wash" 8 2.
SAFETY COMPONENTS FLOW SWITCH The flow switch prevents the burner from being turned on if there is insufficient water. Proper water flow causes the magnetic core to be pushed up, causing the reed contact to close. This contact is interlocked with the main heater contactor. UNLOADER VALVE The Unloader allows all of the water delivered by the pump to return to the pump suction side. If the trigger gun is closed (shut) the valve goes into the “bypass mode”. The pump runs without pressure.
THINGS TO CHECK REGULARLY 1. Check for SYSTEMS LEAKS. Leaks in the pressure side of the system can cause premature wear (or even failure) of the pump. The WARNING signal for this kind of leak is “frequent” cycling of the Unloader. (“FREQUENT” means more than once every 2 minutes in the “Gun-Off” position.) Check the gun and swivel joints for leaks. 2. Check the OIL LEVEL at least once a week. Add ONLY the type and grade of oil specified for this pump. (See Parts List.) 3. CHANGE OIL as recommended. 4.
SERVICE AND MAINTENANCE Before carrying out maintenance work or repairs, disconnect the plug from the power supply. MAINTENANCE SCHEDULE: WEEKLY: Check the oil level of the high pressure pump. If the oil is milky or the oil level is below the minimum mark, change or fill with SAE 20W or 30W non-detergent oil. YEARLY: Oil Change: Remove the drain plug of the water pump, drain the oil, and clean and replace the drain plug. Fill oil up to the red dot inside the oil glass (Use SAE 20W or 30W non-detergent oil).
SPECIFICATIONS, FEATURES & OPTIONS Electric Model Specifications *Output temperatures are based on an input temperature of 55 deg. F EH-2303-0M30 EH-3004-0M30 – 2300 – 3.0 6.0 4.0 – – 60 140 – 3000 – 3.9 8.0 4.5 – – 82 180 5 7.
ELECTRICAL CONTROL PANEL 11
EH-2303-0M30 SCHEMATIC 12
EH-3004-0M30 SCHEMATIC 13
ELECTRICALLY HEATED PARTS BREAKDOWN ITEM NO. PART NO. 1 EP: 24751 2 EP: 24757 3 FA: 315-006 4 EL: 2191L1-24V 4 EL: 2191L5-24V 5 EL: GGC5 6 EL: 345603 7 EL: 110PMOFF 8 EL: N3030 9 EP: 703701 10 EL: 1131/26 11 EL: CA11 12 EL: CA201-73 13 EL: TRV 14 EP: 40034 15 EP: 22208 16 PU: SRI ITEM NO. PART NO.
ELECTRICALLY HEATED PARTS BREAKDOWN ITEM NO. PART NO. 41 42 43 44 45 45 46 47 47 48 49 50 51 51 52 52 52 54 55 56 ITEM NO. PART NO.
UNLOADER VALVE UVP 1060 ITEM DESCRIPTION 1 Inlet Fitting 2 O Ring 3 Ball spring 4 S. S. Ball 5 O Ring 6 Seat 7 Valve Housing 8, 10 Plug 9, 11 Washer 12 Back Ring 13 O Ring 14 Piston Rod 15 Back Ring 16 O Ring 17 Piston Housing 18 Pin 19 Spring 20 Spring Guide 21 Nut 22 Washer 23 Plug 24 O Ring 25 Check Valve 26 Spring 27 Outlet Fitting 28 Nut 29 Handle 30 Washer 16 PART NUMBER 60.0024.31 10.3068.00 60.0015.51 14.7443.10 10.3059.01 30.0011.51 60.0020.35 60.0028.31 14.4042.00 10.4013.00 10.3060.00 60.
UNLOADER - MTM Part # Code Description 1 OT354127 2 BK400111 3 OR403043 4 IX402552 4 IX384244/1 5 BK400109 6 OR400272 7 OR403062 8 OT402549 9 SE406873 10 M0354240 10 M0354241 11 OT402550 12 Vl387473 13 OT354458 14 OR350112 15 SF351332 16 M0354676/1 17 OT384674 18 Vl355588/1 19 OR400117 20 OT402554 21 IX402553 22 SF230000 23 M0400001 24 MA350000/1 25 PL354152 26 OT354457 27 OT355293 Cental Body Ring Antiextrusion SR111 O-Ring 3043 NBR Threaded Stelo M8x1 L.94 Threaded Stelo M8x1 L.
GENERAL PUMP TS1331 ITEM 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 DESCRIPTION PART # QTY Pump Head Screws Washers O-Rings Valve Seals Valve Plates Springs Valve Guides O-Rings Caps Valve Assembly Screws O-Rings Tapered Roller Bearings Oil Seals Bushings Crankcase Oil Dip Stick Cover Gasket Crankshaft - T1331 Snap Rings Key Wrist Pins Piston Guides Connection Rods Screws Rear Crankcase Cover Oil Level Indicator 47.1208.41 99.3206.00 96.7020.00 90.3841.00 36.2003.66 36.
GENERAL PUMP T2011 ITEM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 DESCRIPTION PART # Pump Head 47.1209.41 Screws 99.3206.00 Washers 96.7020.00 O-Rings 90.3841.00 Valve Seats 36.2003.66 Valve 36.2001.76 Springs 94.7376.00 Valve Guides 36.2002.51 O-Rings 90.3847.00 Caps 98.2222.00 Valve Assembly 36.7032.01 Screws 99.3039.00 Crankcase Cover 47.1501.22 O-Rings 90.3913.00 Tapered Roller Bearings91.8375.00 Oil Seals 90.1625.00 Bushings 90.9126.00 Crankcase 47.0104.
TROUBLESHOOTING TROUBLE POSSIBLE CAUSE REMEDY Low Pressure Loose belt on pump Tighten pump Leaks in water system Tighten all fittings Insufficient water supply Fill tank or increase line size to machine Outlet orifice worn or wrong size Replace with correct orifice. CAUTION: Do not use smaller than recommended. Excessive pressure will damage pump. Gun control unloader valve bypass leak Repair or replace unloader valve Dirty or worn check valves in pump Replace or clean.
MI-T-M® WARRANTY Warranty does not include damage from negligence, abuse or freezing and is limited to the repair or replacement of the part(s). Warranty parts(s) will be repaired or replaced F. O. B. our factory or at any Mi-T-M® authorized depot, without charge, providing permission is first obtained from our factory and the part(s) returned prepaid. If on site inspection is requested, a labour charge will apply. All parts will be repaired or replaced at Mi-T-M® discretion.
