MMD Equipment MMD 70 Operator, Maintenance And Parts Manual

Text of MMD Equipment MMD 70 User Guide:

• MMD Equipment MMD 70, 30 LUBRICATION LUBRICANT RECOMMENDATIONS WARNING IT IS IMPORTANT THAT THE COMPRESSOR FLUID BE OF A RECOM- MENDED TYPE AND THAT THIS OIL, AS WELL AS THE AIR FILTER, OIL FILTER AND SEPARATOR ELEMENTS BE INSPECTED AND REPLACED AS STATED IN THIS MANUAL. THE COMBINATION OF A SEPARATOR ELEMENT LOADED WITH DIRT AND OXIDIZED OIL PRODUCTS, TOGETHER WITH INCREASED AIR VELOCITY AS A RESULT OF THIS CLOGGED CONDITION, MAY PRODUCE A CRITICAL POINT, WHILE THE MACHINE IS IN OPERATION, WHERE IGNITION CAN TAKE PLACE AND COULD CAUSE A FIRE

• MMD Equipment MMD 70, 4 SAFETY PARKING OR LOCATING COMPRESSOR Locate compressor on level areas, if possible. If not, locate compressor across grade, so the compressor does not tend to roll down hill. Do not locate compressor on grades exceeding 15 degrees (27%). Make sure compressor is parked or located on a firm surface that can support its weight. Locate compressor so the wind, if any, tends to carry the engine exhaust fumes and radiator heat away from the compressor air inlet openings and also where the compressor will not be exposed to excessive dust from the work site. Muffler side of package must have 12 inches of clearance so engine-cooling air can escape from the unit w

• 42 RECOMMENDED SPARE PARTS LIST ENGINE MAINTENANCE PARTS DESCRIPTION MMD P/N Engine Oil Filter 304968 Engine Fuel Filter 304969 Engine Air Cleaner Element 304967 Spark Plugs 304971 Spare Keys 305404 COMPRESSOR MAINTENANCE PARTS DESCRIPTION MMD P/N Drive Belts (Need two) 300742-530 Compressor Air Cleaner Element 302091 Compressor Oil Filter 302601 Compressor Coalescing Element 302600 Fan Sens

• MMD Equipment MMD 70, 48 SCREW COMPRESSOR AIR-END EXCHANGE PROGRAM Replacement air-ends are available from the factory. For current prices and availability, contact MMD Equipment or an authorized dealer. Prices are F.O.B. shipping point. Prices do not include labor for removal or installation.

• MMD Equipment MMD 70, 13 SAFETY NOTE THE OWNER, LESSOR, OR OPERATOR OF THE COMPRESSOR IS HEREBY NOTI- FIED AND FOREWARNED THAT ANY FAILURE TO OBSERVE THESE SAFETY PRE- CAUTIONS MAY RESULT IN DAMAGE OR INJURY. MMD EXPRESSLY DISCLAIMS RESPONSIBILITY OR LIABILITY FOR ANY INJURY OR DAMAGE CAUSED BY FAILURE TO OBSERVE THESE SPECIFIED PRECAU- TIONS OR BY FAILURE TO EXERCISE THAT ORDINARY CAUTION AND DUE CARE, REQUIRED WHEN OPERATING OR HANDLING THE COMPRESSOR IS TAKEN, EVEN THOUGH NOT EXPRESSLY SPECIFIED ABOVE. Compliments of warning decals are supplied with each unit. These decals are affixed t

• MMD Equipment MMD 70, 11 SAFETY JUMP STARTING Observe all safety precautions mentioned elsewhere in this manual. Batteries may contain and/or generate gases that are flammable and explosive. Keep flames, sparks and other sources of ignition away. Batteries contain acid that is corrosive. Do not allow battery acid to contact eyes, fabrics, or painted surfaces, as serious personal injury or property damage may result. Flush any con- tacted areas thoroughly with water immediately. Wear an acid resistant apron and face shield when attempting to jump-start the compressor. *Remove all vent caps from the battery in the compressor. Do not permit dirt or foreign matter to enter the open cells. Do

• MMD Equipment MMD 70, 29 COMPRESSOR INSPECTION, LUBRICATION, AND MAINTENANCE NOTE OBSERVE ALL GAUGE READINGS. NOTE ANY CHANGE FROM THE NOR- MAL READING AND DETERMINE THE CAUSE. HAVE NECESSARY REPAIRS MADE. “NORMAL” IS THE USUAL GAUGE READING WHEN OPERATING AT SIMILAR CONDITIONS ON A DAY-TO-DAY OPERATION. FIRST COMPRESSOR OIL AND OIL FILTER ELEMENT CHANGE SHOULD BE MADE AT 50 HOURS. ALSO, MORE FREQUENT OIL CHANGES WILL BE RE- QUIRED UNDER EXTREME OPERATING CONDITIONS OF EXTREMELY HIGH OR LOW TEMPERATURES, AND HIGH HUMIDITY. CHANGE OIL EVERY SIX MONTHS, EVEN IF THE NORMAL OIL CHANGE PERIOD IN HOURS, HAS NOT YET ELAPSED. ALWAYS WARM UP THOROUGHLY PRIOR TO

• 21 DESCRIPTION OF COMPONENTS ELECTRICAL AND PROTECTIVE CIRCUIT SYSTEM The compressor electrical system is a 12-volt negative ground type. It is equipped with a protective circuit to minimize damage which could be caused by high compressor discharge temperature, or high discharge pressure. See wiring diagram and electrical system in the illustrations section. The following c

• MMD Equipment MMD 70, 44 WARRANTY MMD Equipment 121 High Hill Road Swedesboro, NJ 08085 MMD Equipment (MMD) warrants that this Rotary Screw Compressor unit conforms to applicable drawings and specifications. The compressor assembly will be free from defects in material and workmanship for a period of two (2) years from the date of initial operation or thirty (30) months from the date of shipment, whichever period first expires. All other components and parts of manufacture will be free from defects in material and workmanship for a period of one (1) year

• MMD Equipment MMD 70, 37 COMPRESSOR INSPECTION, LUBRICATION, AND MAIN- TENANCE CHART NOTE: See Maintenance Section for clarification on above. INTERVAL ACTION EVERY 10 HOURS OR DAILY 1. Check compressors oil level. 2. Check air filter. 3. Check for oil and air leaks. 4. Check fuel supply after running. 5. Check for fuel, oil and compressor fluid leaks. EVERY 50 HOURS OR WEEKLY 1. Drain water from compressor oil at sump. 2. Check belt tension. 3. Drain water and sediment from fuel tank. EVERY 500 HOURS OR 6 MONTHS 1. Change compressor oil and

• MMD Equipment MMD 70, 31 LUBRICATION APPLICATION GUIDE Not all lubricating oils are suitable for rotary screw compressor use. The most satisfactory oils are the non-detergent types that contain high levels of corrosion, oxidation, and foam inhibitors. Your AC70 compressor is factory filled with Dextron III ATF. Other non-detergent motor oils, SAE 10W, class SE or CD, and SAE 30 that meet the requipments below can be used. However, MMD recomends that you use Dextron III ATF. The viscosity of the oil chosen depends largely on the ambient operatin

• MMD Equipment MMD 70, 36 MAINTENANCE NOTE PARTS REQUIRED FOR ENGINE MAINTENANCE MAY BE FOUND IN THE ENGINE PARTS MANUAL, A COPY OF WHICH IS PROVIDED WITH EACH UNIT. FULL LOAD SPEED Using an air flow silencer, open service air valve until 100 PSI is being held on receiver pressure gauge. Be sure there is no air leakage from pressure regulator vent hole. With the use of an electronic photo tachometer, set the full load speed at 3500 - 3600 RPM. The governor spring tension held by an anchor bolt allows adjustments to be made. IDLE SPEED To adjust idle speed, close service air valve and set idle speed to 2000 - 2500 RPM by moving

• MMD Equipment MMD 70, 45 SUMMARY OF MAIN WARRANTY PROVISIONS As claims, policies and procedure are governed by the terms of MMD Equipment’s warranty, it is necessary to outline some of the more important provisions. The MMD Equipment warranty applies only to new and unused products which, after shipment from the factory, have not been altered, changed, repaired or mistreated in any manner whatsoever. Normal mainte- nance items such as lubricants, filters, and shaft seals are not warrantable items. Parts not of MMD licensed manufacture are warranted only to the extent that they are warranted by their original manufacturer. Damage resulting f

• MMD Equipment MMD 70, 6 SAFETY FIRE AND EXPLOSION (CONT.) Disconnect the ground (negative) battery connection prior to attempting any repairs or clean- ing inside the enclosure. Tag the battery connection so others will not unexpectedly recon- nect it. Keep electrical wiring, including the battery terminals and other terminals, in good condi- tion. Replace any wiring that has cracked, been cut, abraded, or otherwise has degraded insula- tion; or terminals that are worn, discolored or corroded. Keep all terminals clean and tight. Turn off battery charger before making or breaking connections to the battery. Keep grounded conductive objects, such as tools, away from exposed live electric

• MMD Equipment MMD 70, 27 COMPRESSOR INSPECTION, LUBRICATION AND MAINTENANCE This section contains instructions for performing the inspection, lubrication and maintenance procedures required in maintaining the compressor in proper operating condition. The importance of performing the maintenance described herein cannot be over emphasized. Periodic maintenance procedures to be performed on the equipment covered by this manual are listed below. It should be understood that the intervals between inspections specified are maximum intervals. More frequent inspections should be made if the unit is operating in a dusty environment, in high ambient temperature, or in other unusual condi

• 25 COMPRESSOR OPERATION While MMD EQUIPMENT has built into its compressor several controls and indicators to assure you that it is running properly, you will want to recognize and interpret the readings which will call for service or indicate the beginning of a malfunction. Before starting the compressor, read this section thoroughly. Familiarize yourself w

• MMD Equipment MMD 70, 28 COMPRESSOR INSPECTION, LUBRICATION, AND MAINTENANCE CHART NOTE: See Maintenance Section for clarification on above. INTERVAL ACTION EVERY 10 HOURS OR DAILY 1. Check compressor's oil level. 2. Check air filter. 3. Check for oil and air leaks. 4. Check fuel supply after running. 5. Check for fuel, oil and compressor fluid leaks. EVERY 50 HOURS OR WEEKLY 1. Drain water from compressor oil at sump. 2. Check belt tension. 3. Drain water and sediment from fuel tank. EVERY 500 HOURS OR 6 MONTHS 1. Change compressor oil and oil filter. 2. Check air filt

• MMD Equipment MMD 70, 34 MAINTENANCE AIR/OIL COALESCER The air/oil coalescer employs an element permanently housed within a spin-on canister. This is a single piece unit that requires replacement when it fails to remove the oil from the dis- charge air. See Discharge System in the illustration section. To replace element, P/N 302600, proceed as follows: 1. Shutdown compressor and wait for complete blow down (zero pressure). 2. Turn element counterclockwise for removal (as viewed from bottom). 3. Install new rubber seal in head and

• MMD Equipment MMD 70, 12 SAFETY JUMP STARTING (CONT.) Use only jumper cables that are clean, in good condition, and are heavy enough to handle the starting current. Avoid accidental contact between jumper cable terminal clips or clamps and each other or any metallic portion of either the compressor or the starting vehicle to minimize the possibil- ity of uncontrolled arcing, which might serve as a source of ignition. Positive battery terminals are usually identified by a plus (+) sign on the terminal and the letters POS adjacent to the terminal. N

• MMD Equipment MMD 70, 33 MAINTENANCE COMPRESSOR OIL SUMP FILL, LEVEL, AND DRAIN Before adding or changing compressor oil make sure that the sump is completely relieved of pressure. Oil is added at the fill cap on the side of the compressor. A drain plug is provided at the bottom of the sump. The proper oil level, when unit is shutdown and has had time to settle, is at the midpoint of the upper oil sightglass. The unit must be level when checking the oil. DO NOT OVERFILL. The oil sump capacity is given in “Compressor Specifications”. DANGER WHILE COMPRESSOR IS RUNNING DO NOT ATTEMPT TO DRAIN CONDENSATE, RE

• MMD Equipment MMD 70, 39 TROUBLESHOOTING UNPLANNED SHUTDOWN When the operation of the machine has been interrupted by an unexplained shutdown, check the following: 1. Check to determine if compressor oil is at proper level. 2. Check the engine oil level with the engine stopped and in a level position. If the oil level is low, remove the oil filler cap, and fill to the upper limit mark on the dipstick with the rec- ommended oil. 3. Check oil cooler for dirt, slush, ice on the fins, or any other obstructions to cooling air- flow. 4. Make a thorough external check for any cause of shutdown such as broken hose, broken oil lines, loose or broken wire, etc. 5. Check electric fan motor and wiring. 6

• MMD Equipment MMD 70, 8 SAFETY HOT SURFACES, SHARP EDGES AND SHARP CORNERS, INTAKE VACUUM Avoid bodily contact with hot oil, hot coolant, hot surfaces and sharp edges and corners. Keep all parts of the body away from all points of air discharge and away from hot exhaust gases. Wear personal protective equipment, including gloves and head covering when working in, on, or around the compressor. Keep a first aid kit handy. Seek medical assistance promptly in case of injury. Do not ignore small cuts and burns, as they may lead to infection. Keep all loose clothing and parts of the body away from engine and/or compressor intakes or air filter intakes. TOXIC AND IRR

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