Snorkel S2770RT Operator's Manual
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OPERATOR’S MANUAL Model S2770RT IS – Intrinsically Safe Part Number 0102094 November 2017 The aerial platform is not electrically insulated. Death or serious injury will result from contact with, or inadequate clearance from, an energized conductor. Do not go closer than the minimum safe approach distance as defined by the Minimum Safe Approach Distance section in Chapter 3–Safety. Regard all conductors as energized. Allow for electrical wire sag and aerial platform sway. If the platform, scissor structure, or any part of the aerial platform contacts a high-voltage electrical conductor, the entire machine can become electrically charged. If that happens, remain on the machine and do not contact any other structure or object. This includes the ground, adjacent buildings, poles, and any other objects that are not part of the aerial platform. Such contact could make your body a conductor to the other object, creating an electrical shock hazard resulting in death or serious injury. If an aerial platform is in contact with an energized conductor the platform operator must warn ground personnel in the vicinity to stay away. Their bodies can conduct electricity creating an electrical shock hazard resulting in death or serious injury. Do not approach or leave the aerial platform until the electricity has been turned off. Do not attempt to operate the lower controls when the platform, scissor structure, or any part of the aerial platform is in contact with a high-voltage electrical conductor or if there is an immediate danger of such contact. Personnel on or near an aerial platform must be continuously aware of electrical hazards, recognizing that death or serious injury can result from contact with an energized conductor. California Proposition 65 Warning Diesel and gasoline engine exhaust and some of its constituents are known by the State of California to cause cancer, birth defects or other reproductive harm. Table of Contents Electrical Danger............................. Inside Front Cover California Proposition 65................. Inside Front Cover Chapter 1 – Introduction Aerial Platform Features..............................................1 Operator’s Manual.......................................................1 Safety Alerts................................................................1 Operation.....................................................................1 Maintenance................................................................2 Manual of Responsibilities...........................................2 Additional Information..................................................2 Chapter 2 – Specifications Component Identification.............................................3 General Specifications................................................4 Aerial Platform..........................................................4 Platform....................................................................4 Function Speed........................................................4 Drive System............................................................4 Tires.........................................................................4 Hydraulic System.....................................................4 Ambient Air Temperature Operating Range.............4 Maximum Wind Speed.............................................4 Chapter 3 – Safety Electrocution Hazards.................................................5 Minimum Safe Approach Distance..............................5 Prestart Inspection......................................................6 Work Place Inspection and Practices..........................6 Operation.....................................................................6 Tip-Over and Falling Hazards......................................7 Hydraulic System........................................................7 Engine and Fuel Handling Precautions.......................7 Placards and Decals...................................................8 Chapter 4 – Safety Devices Emergency Stop Controls...........................................9 Manual Emergency Lowering Pump...........................9 Ground Operation Button............................................9 Outriggers..................................................................10 Bubble Levels............................................................10 Platform Foot Valve...................................................10 Tilt Alarm....................................................................10 Guardrails..................................................................10 Lanyard Anchors.......................................................10 Horn Button............................................................... 11 Safety Prop................................................................ 11 Chapter 5 – Gauges and Displays Fuel...........................................................................13 Engine Oil..................................................................13 Hydraulic Fluid Filter Gauge......................................13 Hydraulic Fluid Level Gauge.....................................13 Bubble Levels............................................................13 Chapter 6 – Controls Outrigger Controls.....................................................15 Lower Controls..........................................................15 Emergency Stop Button.........................................15 Control Selector.....................................................15 Ground Operation Button.......................................15 Platform Raise Button............................................15 Platform Lower Button............................................15 Upper Controls..........................................................16 Emergency Stop Button.........................................16 Lift/Drive Handle.....................................................16 Steer Handle..........................................................16 Drive Speed Handle...............................................16 High Speed Drive – Rabbit.....................................16 Low Speed Drive – Turtle.......................................16 Joystick..................................................................16 Horn Button............................................................17 Platform Foot Valve...................................................17 Chapter 7 – Prestart Inspection Operator’s Manual.....................................................19 Engine.......................................................................19 Oil Level.................................................................19 Air Intake................................................................19 Fuel Tank................................................................19 Fuel Line................................................................20 Hydraulic System......................................................20 Fluid Level..............................................................20 Fluid Filter..............................................................20 Hoses, Tubes, and Fittings.....................................20 Tires and Wheels.......................................................21 Outrigger Controls.....................................................21 Bubble Levels............................................................21 Lower Control Station................................................21 Operating Controls.................................................21 Emergency Stop.....................................................22 Manual Emergency Lowering Pump.........................22 Structures..................................................................22 Weldments.............................................................22 Rollers and Slide Blocks........................................22 Fasteners...............................................................23 Upper Control Station................................................23 Guardrail System...................................................23 Lanyard Anchors.......................................................23 Platform Extension Deck...........................................24 Operating Controls.................................................24 Emergency Stop.....................................................25 Horn Button............................................................25 Placards and Decals.................................................25 Prestart Inspection Checklist.....................................29 Chapter 8 – Operation Hydraulic System Cold Weather Warm-Up ..............31 Manually Warming The Hydraulic System.............31 Preparing for Operation.............................................31 Outriggers..................................................................31 Operating with Outriggers Lowered on Slopes......32 Lower Controls..........................................................33 S2770RT IS – 0102094 Table of Contents Upper Controls..........................................................33 Platform.....................................................................34 Raising and Lowering.............................................34 Driving and Steering..................................................34 Drive Speeds .........................................................35 Fold Down Guardrails................................................35 Platform Extension Deck...........................................36 Chapter 9 – Stowing and Transporting Stowing......................................................................37 Transporting..............................................................37 Driving....................................................................37 Lifting With a Forklift...............................................37 Winching................................................................38 Hoisting..................................................................38 Securing for Transport............................................39 Chapter 10 – Emergency Operation Manual Emergency Lowering Pump.........................41 Chapter 11 – Troubleshooting Troubleshooting Chart...............................................43 Appendix A – Glossary Limited Warranty S2770RT IS – 0102094 Chapter 1 – Introduction Aerial Platform Features The aerial platform is a self-propelled work platform that has been designed to raise personnel, their tools, and material to the workstation. The platform is raised and lowered with hydraulic cylinders. A hydraulic motor on each wheel provides power to move the aerial platform. The standard machine includes the following features: Proportional controls Multi-position extension deck Lanyard anchors Swinging entry gate Four wheel drive Easy access side trays for engine and hydraulics Lockable hinged covers Independently operated hydraulic outriggers Horn Drivable at full height Tie-down/lifting lugs Forklift pockets • Manual emergency lowering pump yy Five year limited warranty yy yy yy yy yy yy yy yy yy yy yy yy The aerial platform has been manufactured, when applicable, to conform to all applicable requirements of the following organizations: yy yy Occupational Safety and Health Administration (OSHA) American National Standards Institute (ANSI) Operator’s Manual This manual provides information for safe and proper operation of the aerial platform. Read and understand the information in this Operator’s Manual before operating the aerial platform on the job. Additional copies of this manual may be ordered from Snorkel. Supply the model and manual part number from the front cover to assure that the correct manual will be supplied. Danger Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This signal word is to be used in the most extreme situations. Warning Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. Notes Notes are used to provide special information or helpful hints to assist in aerial platform operation, but do not indicate a hazardous situation. Operation The aerial platform has built-in safety features and has been factory tested for compliance with Snorkel specifications and industry standards. However, any personnel lifting aerial platform can be potentially dangerous in the hands of untrained or careless operators. Warning The potential for an accident increases when the aerial platform is operated by personnel who are not trained and authorized. Death or serious injury could result from such accidents. Read and understand the information in this manual and on the placards and decals on the machine before operating the aerial platform on the job. Training is essential and must be performed by a qualified person. yy All information in this manual is based on the latest product information at the time of publication. Snorkel reserves the right to make product changes at any time without obligation. Become proficient in knowledge and actual operation before using the aerial platform on the job. yy The operator must be trained and authorized to perform any functions of the aerial platform. Safety Alerts yy Operation of the aerial platform must be within the scope of the machine specifications. A safety alert symbol is used throughout this manual to indicate danger, warning, and caution instructions. Follow these instructions to reduce the likelihood of personal injury and property damage. The terms danger, warning, and caution indicate varying degrees of personal injury or property damage that can result if the instruction is not followed. S2770RT IS – 0102094 The operator bears ultimate responsibility for following all manufacturer’s instructions and warnings, regulations and safety rules of their employer and/or any state or federal law. 1 Chapter 1 – Introduction Maintenance Manual of Responsibilities Do not modify this aerial platform without prior written consent of the Snorkel Engineering Department. Modification may void the warranty, adversely affect stability, or affect the operational characteristics of the aerial platform. ANSI publications clearly identify the responsibilities of all personnel who may be involved with the aerial platform. A reprint of the “Manual of Responsibilities for Dealers, Owners, Users, Operators, Lessors and Lessees of ANSI/SIA A92.6–2006 Self-Propelled Elevating Work Platforms” is available from Snorkel dealers or from the factory upon request. Every person who maintains, inspects, tests, or repairs the aerial platform must be qualified to do so. Following the daily prestart inspection in this Operator’s Manual will help keep the aerial platform in optimum working condition. Other maintenance functions must be performed by maintenance personnel who are qualified to work on the aerial platform. All owners and users of the aerial platform must read, understand, and comply with all applicable regulations. Ultimate compliance to OSHA regulations is the responsibility of the user and their employer. Copies are also available from: Scaffold Industry Association, Inc. P. O. Box 20574 Phoenix, AZ 85036-0574 USA Additional Information For additional information contact your local dealer or Snorkel at: Snorkel International P.O. Box 1160 St. Joseph, MO 64502-1160 USA 1-800-255-0317 http://www.snorkellifts.com 2 S2770RT IS – 0102094 Chapter 2 – Specifications Component Identification Top Rail Extension Deck Platform Mid Rail Toeboards Lower Controls Scissors Structure Serial Number Placard Serial Number Model Number Fuel Tank Tie-Down/Lifting Lugs Hydraulic Compartment Rear Hydraulic Reservoir • Hydraulic Fluid Filter Emergency Lowering Pump Front Steer Wheels Tie-Down/Lifting Lugs Right Side Upper Controls Operator’s Manual Entry Gate Engine Compartment Engine • Hydraulic Pump Entry Steps Chassis Outriggers Forklift Pockets Both Sides Rear Front Left Side S2770RT IS – 0102094 3 Chapter 2 – Specifications General Specifications Aerial Platform Working height 33′ 9″ (10.28 m) Maximum platform height 27′ 2″ (8.28 m) Maximum outreach – deck extended 4′ (1.2 m) Turning radius Inside 9′ 3″ (2.83 m) Outside 15′ 1″ (4.6 m) Ground clearance 14.6″ (37 cm) Maximum wheel load 3,820 lbs (1,733 kg) Empty vehicle weight (EVW) Approximate 7,600 lbs (3,455 kg) Stowed width 5′ 9″ (1.77 m) Stowed length 11′ (3.36 m) Stowed height Rails up 8′ 2″ (2.5 m) Rails down 5′ 8″ (1.7 m) Platform Dimensions Deck retracted Deck extended Guardrail height Toeboard height 8′ 11″ x 5′ 5″ (2.73 m x 1.65 m) 12′ 8″ x 5′ 5″ (3.86 m x 1.65 m) 45″ (1.14 m) 6″ (152 mm) Rated work load Deck retracted Deck extended Main deck Extension Maximum number of occupants 4 1,275 lbs (580 kg) 1,015 lbs (460 kg) 265 lbs (120 kg) 4 people Function Speed Platform raise Platform lower Drive speed maximum Elevated Stowed Drive System Standard Gradeability – theoretical Maximum drive height Tires Air filled 26 seconds 35 seconds 0.64 mph (1 km/h) 2.8 mph (4.5 km/h) Four wheel drive 30% 27′ 2″ (8.28 m) 26 x 12.00 - 16.5 NHs Hydraulic System Maximum pressure 3,300 psi (22,750 kPa) Reservoir capacity 13 US gal (50 l) Maximum operating temperature 180°F (82°C) Hydraulic fluid recommended Above 10°F (-13°C) ISO VG32 Below 10°F (-13°C) ISO VG15 Fuel Tank Capacity Diesel 11 US gal (41.5 l) Ambient Air Temperature Operating Range Fahrenheit 0°F to 110°F Celsius -18°C to 43°C Maximum Wind Speed Gust or steady 28 mph (45 km/h) S2770RT IS – 0102094 Chapter 3 – Safety Knowledge of the information in this manual, and proper training, provide a basis for safely operating the aerial platform. Know the location of all controls and how they operate to act quickly and responsibly in an emergency. Minimum Safe Approach Distance Minimum safe approach distances to energized power lines and their associated parts must be observed while operating the aerial platform. Safety devices reduce the likelihood of an accident. yy Never disable, modify, or ignore any safety device. yy Safety alerts in this manual indicate situations where accidents may occur. If any malfunction, hazard or potentially unsafe condition relating to capacity, intended use, or safe operation is suspected, stop aerial platform operation and seek assistance. The operator bears ultimate responsibility for following all manufacturer’s instructions and warnings, regulations and safety rules of their employer and/or any state or federal law. Electrocution Hazards ADanger The aerial platform is not electrically insulated. Death or serious injury will result from contact with, or inadequate clearance from, an energized conductor. Do not go closer than the minimum safe approach distance as defined by ANSI. ANSI publications define minimum distances that must be observed when working near bus bars and energized power lines. Table 1 and Figure 3 are reprinted courtesy of Scaffold Industry Association, ANSI/SIA A92.6. Voltage Range (Phase to Phase) 0 to 300V The aerial platform is made of metal components and is not insulated. Regard all conductors as energized. Do not operate outside during a thunderstorm. Minimum Safe Approach Distance Feet Meters Avoid Contact Over 300V to 50kV 10 3.05 Over 50kV to 200kV 15 4.60 Over 200kV to 350Kv 20 6.10 Over 350kV to 500kV 25 7.62 Over 500kV to 750kV 35 10.67 Over 750kV to 1000kV 45 13.72 Table 1 – Minimum Safe Approach Distance Figure 3 – Minimum Safe Approach Distance S2770RT IS – 0102094 5 Chapter 3 – Safety Prestart Inspection Perform a prestart inspection before each shift as described in Chapter 7. Do not use the aerial platform on the job unless you are trained and authorized to do so. Work Place Inspection and Practices chassis or platform. Allow sufficient room and time to stop movement to avoid contact with structures or other hazards. Always look in the direction of movement. Do not use the aerial platform as a ground connection when welding. yy Drive with care and at speeds compatible with the work place conditions. yy The welding ground clamp must be attached to the same structure that is being welded. yy Use caution when driving over rough ground, on slopes and when turning. yy Electrical current flow can be very intense, causing serious internal damage to some components. yy Do not engage in any form of horseplay or permit riders any place other than in the platform. Inspect the area before and during aerial platform use. The following are some potential hazards that may be in the work place: yy yy yy yy yy yy yy yy yy Debris Slopes Drop-offs or holes Bumps and floor obstructions Overhead obstructions Unauthorized persons High voltage conductors Wind and weather conditions Inadequate surface and support to withstand load forces applied by the aerial platform in all operating configurations Before using the aerial platform in any hazardous (classified) location, make certain it is approved and of the type required by ANSI/NFPA 505 for use in that particular location. Secure all accessories, containers, tools and other materials in the platform to prevent them from accidentally falling or being kicked off the platform. Remove all objects that do not belong in or on the aerial platform. Never steady the platform by positioning it against another platform. AWarning The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury could result from such accidents. Do not operate the aerial platform if it is damaged or malfunctioning. Do not operate the aerial platform if it is damaged or not functioning properly. Qualified maintenance personnel must correct the problem before putting the aerial platform back into service. Operation Know and understand the job site traffic-flow patterns and obey the flagmen, road signs and signals. Use three points of support when entering or exiting the platform. For example, use two hands and one foot when climbing into the platform. While operating the aerial platform, a good safety practice is to have qualified personnel in the immediate work area to: Make sure the area below the platform is free of personnel before lowering. yy yy yy yy yy yy Help in case of an emergency Operate emergency controls as required Watch for loss of control by platform operator Warn the operator of any obstructions or hazards that may not be obvious to them Watch for soft terrain, sloping surfaces, drop-offs, etc. where stability could be jeopardized Watch for bystanders and never allow anyone to be under, or to reach through the elevating assembly while operating the aerial platform ADanger Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components, buildings, structures, or other obstacles. Make sure there is sufficient clearance around the machine before moving the 6 Make sure the area below the platform is free of personnel before lowering. Keep both feet positioned firmly on the platform floor. yy Operate the controls slowly and deliberately to avoid jerky and erratic operation. yy Always stop the controls in neutral before going in the opposite direction. Do not dismount while the aerial platform is in motion or jump off the platform. Properly stow the aerial platform and secure it against unauthorized operation at the end of each work day, before transporting, or if it is left unattended. S2770RT IS – 0102094 Chapter 3 – Safety Tip-Over and Falling Hazards Operate the aerial platform only on a firm, flat, level surface capable of withstanding all load forces imposed by the aerial platform in all operating conditions. Refer to the General Specifications chart for the maximum wheel load and ground pressure. Raise the platform only when the aerial platform is on level ground. Do not climb on the guardrails or use ladders, planks, or other devices to extend or increase the work position from the platform. Take care to prevent rope, electrical cords, hoses, etc., from becoming caught in or on the aerial platform. yy If the platform or elevating assembly becomes caught on an adjacent structure or other obstacle and is prevented from normal motion, reverse the control to free the platform. yy If control reversal does not free the platform, evacuate the platform before attempting to free it. ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Do not drive or position the aerial platform for elevated use near any drop-off, hole, slope, soft or uneven ground, or other tip-over hazard. On scissor lifts, personal fall protection is not required by ANSI, Federal OSHA, nor Snorkel. However, fall restraint might be required by work regulations. If so, the user is responsible for fitness and method of use. It is best not to transfer from the platform to another structure or from the structure to the platform, unless that is the safest way to do the job. Judge each situation separately taking the work environment into account. If it is necessary to transfer from the platform to another structure the following guidelines apply: 1. If you are using a fall restraint, transfer your anchorage from one structure to the other before stepping across. 2. Remember that you might be transferring to a structure where personal fall arrest is required. 3. Use the platform entrance, do not climb over or through the guardrails. Hydraulic System The hydraulic system contains hoses with hydraulic fluid under pressure. ADanger Hydraulic fluid escaping under pressure can have enough force to inject fluid into the flesh. Serious infection or reaction will result if medical treatment is not given immediately. In case of injury by escaping hydraulic fluid, seek medical attention at once. Do not place your hand or any part of your body in front of escaping hydraulic fluid. Use a piece of cardboard or wood to search for hydraulic leaks. Engine and Fuel Handling Precautions Refer to the engine manufacturer’s Operator’s Manual for complete information on safe engine operation, maintenance, and specifications. ADanger Do not operate the aerial platform in windy or gusty conditions. Do not add anything to the aerial platform that will increase the wind loading such as billboards, banners, flags, etc. Engine exhaust contains carbon monoxide, a poisonous gas that is invisible and odorless. Breathing engine exhaust fumes will cause death or serious illness. Do not run the engine in an enclosed area or indoors without adequate ventilation. Never operate the aerial platform without all parts of the guardrail system in place and the gate closed. Make sure that all protective guards, cowlings, and doors are securely fastened. Be careful not to run the diesel fuel tank empty. Bleed the fuel system if air enters the lines between the tank and the injection pump. Do not exceed the platform capacity nor the platformextension capacity as indicated on the platform rating placard on the platform. Do not carry loads that extend beyond the platform guardrails without prior written consent from Snorkel. Do not operate the aerial platform from trucks, trailers, railway cars, floating vessels, scaffolds, or similar equipment unless the application is approved in writing by Snorkel. Do not use the aerial platform as a crane, hoist, jack or for any purpose other than to position personnel, tools, and materials. S2770RT IS – 0102094 Allow the engine to return to idle before shutting the engine off. Do not smoke or permit open flames while fueling or near fueling operations. Never remove the fuel cap or fill the fuel tank while the engine is running or hot. Never allow fuel to spill on hot machine components. Maintain control of the fuel filler nozzle when filling the tank. Spilled fuel is a potential fire hazard. Do not overfill the fuel tank. Allow room for expansion. 7 Chapter 3 – Safety Clean up spilled fuel immediately. Tighten the fuel tank cap securely. If the fuel cap is lost, replace it with an approved cap from Snorkel. Use of a non-approved cap without proper venting may result in pressurization of the tank. Never use fuel for cleaning purposes. Use the correct fuel grade for the operating season. Placards and Decals The aerial platform is equipped with placards and decals that provide instruction for operation and accident prevention. Do not operate the aerial platform if any placards or decals are missing, damaged, or illegible. 8 S2770RT IS – 0102094 Chapter 4 – Safety Devices This aerial work platform is manufactured with safety devices, placards, and decals to reduce the likelihood of an accident. yy For the safety of all personnel, do not disable, modify, or ignore any safety device. yy Safety devices are included in the daily prestart inspection. At the upper controls, the emergency stop is a two-position red push button (refer to Figure 4.2). Emergency Stop Button AWarning The potential for an accident increases when safety devices do not function properly. Death or serious injury could result from such accidents. Do not alter, disable, or override any safety device. If any safety devices are defective, remove the aerial platform from service until qualified maintenance personnel can make repairs. Emergency Stop Controls There is an emergency stop control at the lower and upper controls. At the lower controls, the emergency stop is a two-position red push button (refer to Figure 4.1). Ground Operation Button Figure 4.2 – Upper Controls yy Push the emergency stop button inward to disconnect power to all the control circuits. yy Pull the button outward to restore power. Manual Emergency Lowering Pump The manual emergency lowering pump may be used to lower the platform and to release the brakes if the engine will not start. The pump (refer to Figure 4.3) is behind the cowling door on the right side of the chassis. Scissor Lower Knob Brake Release Knob Emergency Stop Button Pump Main Control Valve Assembly Figure 4.1 – Lower Controls Note The lower controls override the upper controls. If the upper control emergency stop button is engaged, the lower controls can still be used to operate the aerial platform. Figure 4.3 – Manual Emergency Lowering Pump yy Push the emergency stop button inward to disconnect power to all control circuits. After selecting either the scissor lower or brake release valve, the hand pump may be used for emergency operation. yy Pull the button outward to restore power. Ground Operation Button The ground operation button (refer to Figure 4.1) prevents platform movement if a control button on the lower control panel is accidentally pressed. Press and hold the button to operate the machine from the lower controls. S2770RT IS – 0102094 9 Chapter 4 – Safety Devices Outriggers Four outriggers, one on each corner of the machine are used to level the chassis before raising the platform. The machine should not be driven unless the outriggers are completely raised. Bubble Levels Bubble levels (refer to Figure 4.4) are located on the right front and left rear of the chassis. When the bubbles are centered, the chassis is level and the platform can safely be raised. Guardrails The guardrails (refer to Figure 4.6) help protect personnel from falling off the platform. The guardrail system includes: yy yy yy yy A top rail A mid rail An entry gate Toeboards around the sides of the platform. Top Rail Swinging Gate Mid Rail Toeboard Figure 4.4 – Bubble Level Platform Foot Valve The platform foot valve is on the platform floor beneath the upper controls. Stepping down on the platform foot valve (refer to Figure 4.5) activates the upper controls. Figure 4.6 – Platform The gates close automatically after entering or exiting the platform. The gate is part of the guardrail system and must be securely fastened after entering the platform. Lanyard Anchors Four lanyard anchors for fall restraint anchorage are provided on the floor of the platform (refer to Figure 4.7). Platform Foot Valve Lanyard Anchor Figure 4.5 – Platform Foot Valve The foot valve must be engaged and a control must be moved to operate the scissor and drive functions from the upper controls. Figure 4.7 – Platform Floor yy If local work rules require the use of a fall restraint device, properly connect it to a lanyard anchor before raising the platform. yy Attach only one fall restraint device to each lanyard anchor. Tilt Alarm The tilt alarm sounds when the platform is elevated out of the rest and the machine is not level. Note While the alarm is sounding, the drive and platform functions will not operate. 10 S2770RT IS – 0102094 Chapter 4 – Safety Devices yy Do not use the lanyard anchors for personal fall arrest anchorage. Note The lanyard anchors are not designed for lifting or tying the machine down. Horn Button The horn button may be used to warn personnel on the ground. The horn button is located on the left side of the upper control panel. Safety Prop The safety prop (refer to Figure 4.8) is used to support the scissors structure when access to the scissors arm components or the chassis is required. Always use the safety prop when the platform is raised during inspection and maintenance. Figure 4.8 – Safety Prop S2770RT IS – 0102094 11 Chapter 4 – Safety Devices 12 S2770RT IS – 0102094 Chapter 5 – Gauges and Displays The aerial platform is equipped with several gauges to monitor the condition of the machine before and during operation. Fuel The fuel tank is translucent. The amount of fuel in the tank can be gauged by opening the door on the front of the machine (refer to Figure 5.1) and looking at the tank. Figure 5.2 – Hydraulic Fluid Filter Gauge Hydraulic Fluid Level Gauge Fuel Level The hydraulic fluid level gauge is on the front of the hydraulic oil tank (refer to Figure 5.3) located behind the doors on the left side of the chassis. Figure 5.1 – Front of Chassis Note Do not run a diesel fuel tank empty. Air in the fuel line makes the engine hard to start. Engine Oil The engine oil level is measured with a dipstick. The dipstick is the only way to accurately determine the engine oil level. The engine oil level should always be between the add and full marks on the dipstick. Hydraulic Fluid Filter Gauge The fluid filter gauge (refer to Figure 5.2) is located on the return line filter on the left side of the reservoir. The reservoir is behind the door on the left side of the turntable. yy During high pump flow situations, the gauge indicates the condition of the filter. yy When the needle on the gauge is in the red zone, its time to change the filter. Figure 5.3 – Hydraulic Tank Only read the fluid level when the scissor structure is completely lowered. Otherwise, the lift cylinders become large reservoirs for hydraulic oil and the oil level in the tank will be low. The fluid should be between the Full and Add lines. Bubble Levels Bubble levels (refer to Figure 5.4) are located on the right front and left rear of the chassis. When the bubbles are centered, the chassis is level and the platform can safely be raised. Figure 5.4 – Bubble Level S2770RT IS – 0102094 13 Chapter 5 – Gauges and Displays 14 S2770RT IS – 0102094 Chapter 6 – Controls ADanger Ground Operation Button Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components, buildings, structures, or other obstacles. Make sure all personnel stand clear while operating the aerial platform. yy Controls to position the platform are located on the lower control panel on the chassis and on the upper control panel in the platform. yy Controls to drive the aerial platform are located on the upper control panel only. Control Selector Emergency Stop Button Outrigger Controls The outrigger controls (refer to Figure 6.1) are located on the right side of the chassis. Each handle corresponds to one of the outriggers. ENABLE LEFT REAR RIGHT REAR LEFT FRONT RIGHT FRONT yy Hold the enable handle downward to activate the outrigger controls. yy Hold an outrigger handle downward to lower the corresponding outrigger leg. yy Hold an outrigger handle upward to raise the corresponding outrigger leg. Lower Controls The lower controls (refer to Figure 6.2) are located on the right side of the chassis. Only platform functions can be operated from the lower controls. The following are located on the lower control panel: yy yy yy yy yy Emergency stop button Control selector Ground operation button Platform raise button Platform lower button S2770RT IS – 0102094 Platform Lower Button Figure 6.2 – Lower Controls Emergency Stop Button The emergency stop is a two-position, red push button. yy Push the button inward to disconnect power to all control circuits. yy Pull the button outward to restore power. Control Selector Use the control selector to select between lower control and upper control operation. yy Place the arrow in the upper control position to operate the aerial platform from the upper controls. yy Place the arrow in the lower control position to operate the aerial platform from the lower controls. 0102102 Figure 6.1 – Outrigger Controls Platform Raise Button Ground Operation Button The ground operation button must be pressed when operating the platform raise or lower buttons from the lower controls. The engine speed increases when the button is held inward. yy Hold the button inward continually to operate the platform raise or lower buttons from the lower controls. Platform Raise Button The platform raise button is used to raise the platform. yy To raise the platform, press and hold the ground operation button and the platform raise button. Release the buttons when the desired height is reached. Platform Lower Button The platform lower button is used to lower the platform. yy To lower the platform, press and hold the ground operation button and the platform lower button. Release the buttons when the desired height is reached. 15 Chapter 6 – Controls Upper Controls The upper controls (refer to Figure 6.3) are located on the control panel at the platform. Scissor, platform, and drive functions can be operated from the upper controls. The following controls are located on the upper control panel. yy yy yy yy yy yy Emergency stop button Lift/drive handle Steer handle Drive range handle Joystick Horn Lift/Drive Handle yy Hold the steer handle in the left position to steer to the left. yy Hold the steer handle in the right position to steer to the right. Note The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn. Drive Speed Handle Drive Speed Handle The drive range handle has two positions to select drive wheel operation when the platform is in the stowed position. Emergency Stop Button Steer Handle Steer Handle The steer handle is used to adjust the direction of the steer wheels. High Speed Drive – Rabbit The high speed drive position is used to set the drive speed to high while the platform is in the stowed position. Joystick yy Place the handle in the Rabbit position to double the top speed of the machine. yy To drive the machine forward at high speed, place the handle in the Rabbit position and push the joystick forward, the direction of the white arrow. yy To drive the machine in reverse at high speed, place the handle in the Rabbit position and pull the joystick backward, the direction of the black arrow. Figure 6.3 – Upper Control Panel Emergency Stop Button The emergency stop is a two-position, red push button on the top of the upper control panel (refer to Figure 6.3). Push the button inward to disconnect power to all control circuits at the upper controls. Pull the button outward to restore power. Note The lower controls override the upper controls. If the upper control emergency stop button is engaged the lower controls can still be used to operate the aerial platform. Low Speed Drive – Turtle The low speed drive position is used to set the drive speed to low. yy Place the handle in Turtle position when working in close quarters, climbing grades, or when unfamiliar with the machine operation. Push the emergency stop button inward when the upper controls are not in use to protect against unintentional operation. yy To drive the machine forward at low speed, place the handle in the Turtle position and push the joystick forward, the direction of the white arrow. Lift/Drive Handle Use the lift/drive handle to select between platform raise/ lower and machine drive operation. yy To drive the machine in reverse at low speed, place the handle in the Turtle position and pull the joystick backward, the direction of the black arrow. yy Place the handle in the platform position to operate the aerial platform raise and lower functions. yy Place the handle in the drive position to operate the machine drive and steer functions. Note The platform may either be raised or lowered or driven. Raise and lower function and drive functions cannot be operated simultaneously. 16 Note The drive range operates in Lo when the platform is out of the stowed position, regardless of the drive speed button selected. Joystick The joystick (refer to Figure 6.3) is used to either drive the aerial platform or to raise and lower the platform after selecting the appropriate function. yy Place the lift/drive handle in the drive position to use the joystick to drive the aerial platform. S2770RT IS – 0102094 Chapter 6 – Controls yy Place the lift/drive handle in the platform position to use the joystick to raise and lower the aerial platform. Movement of the joystick in a given direction produces a corresponding movement of the aerial platform. The steering and drive functions may be operated separately or simultaneously. Horn Button The horn button is located on the left side of the upper control panel. Press the button to sound the horn. Platform Foot Valve The upper controls are interlocked through the platform foot valve (refer to Figure 6.4). Step down on and hold the platform foot valve to activate the drive and platform functions from the upper controls. Platform Foot Valve Figure 6.4 – Platform S2770RT IS – 0102094 17 Chapter 6 – Controls 18 S2770RT IS – 0102094 Chapter 7 – Prestart Inspection Potential service and safety problems may be detected by inspecting the aerial platform. This chapter includes information on properly inspecting the aerial platform and includes a prestart inspection check list at the end of this chapter to ensure that no areas are overlooked. AWarning The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury could result from such accidents. Do not operate the aerial platform if it is damaged or malfunctioning. To inspect the engine: 1. Open the engine compartment doors and visually inspect the engine and its components with the engine off. 2. Inspect the latch mechanisms to make certain they are in good working condition to hold the engine cover in place. 3. Make sure that the engine compartment doors are fully closed and latched before operating the machine after inspection or service. Perform a prestart inspection at the beginning of each shift, before using the aerial platform on the job. The inspection site must have a smooth and level surface. Oil Level The proper oil level is between the add and full marks on the dipstick. Operator’s Manual To inspect the oil level: The manual holder is located at the front of the platform (refer to Figure 7.1). Operator’s Manual Holder 1. Make sure the engine has been off for at least five minutes before checking the oil level. This will allow time for the oil to drain to the pan for a more accurate oil level reading. 2. Remove the dipstick and check to see that the oil level is between the two marks. 3. If necessary, add oil before starting the engine. Note Refer to the engine manufacturers operations manuals for the correct engine oil grade and weight. Figure 7.1 – Operator’s Manual Holder To inspect the operator’s manual and manual holder: Air Intake Deutz engines are air cooled. Visually inspect the air intake and fan (refer to Figure 7.2) to be sure they are free of obstructions that could stop or slow the flow of air. Inspect the fan belt to see that it is in place and not cracked. 1. Make certain the Operator’s Manual holder is securely fastened in place. Fan 2. Check to see that the proper Operator’s Manual is in the holder. Fan Belt 3. Check to see that the manual is complete with all pages intact and in readable condition. 4. Make certain ANSI publication “Manual of Responsibilities for Dealers, Owners, Users, Operators, Lessors and Lessees of ANSI/SIA A92.6–2006 SelfPropelled Elevating Work Platforms” must also be in the manual holder. Engine Visually inspect the engine and its components with the engine off. The engine is located behind the doors on the left side of the chassis. S2770RT IS – 0102094 Figure 7.2 – Deutz Air Intake Fuel Tank The fuel tank is translucent. The amount of fuel in the tank can be gauged by opening the door on the front of the machine (refer to Figure 7.3) and looking at the tank. 19 Chapter 7 – Prestart Inspection 2. Open the doors on the right side of the chassis to access the hydraulic fluid level gauge (refer to Figure 7.4). Fuel Level Figure 7.3 – Front of Chassis To inspect the fuel tank: 1. Open the door on the front of the chassis to access the fuel tank. 2. Visually check fuel level. 3. If necessary, add fuel. Note Refer to the engine manufacturers operations manuals for the correct fuel grade specifications. 4. Make sure the cap is securely fastened. Fuel Line To inspect the fuel line: 1. Visually inspect the entire length of the fuel line starting at the fuel tank. 2. Trace the line to the engine, inspecting for leaks and damage. Hydraulic System Hydraulic power is supplied from an engine driven variable displacement piston pump. ADanger Hydraulic fluid escaping under pressure can have enough force to inject fluid into the flesh. Serious infection or reaction will result if medical treatment is not given immediately. In case of injury by escaping hydraulic fluid, seek medical attention at once. Figure 7.4 – Hydraulic Tank 3. Make sure the fluid level is between the Full and Add lines. ACaution Not all hydraulic fluid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and may increase component wear. Only use hydraulic fluid as recommended. 4. If necessary, remove the filler cap and add fluid of the proper type. Replace the cap making sure it is tightly in place. Note Refer to the engine manufacturers operations manuals for the proper type and grade of hydraulic fluid to use. The need to regularly add fluid indicates a leak that should be corrected. Fluid Filter Checking the condition of the hydraulic fluid filter is part of the machine maintenance schedule and should not be performed by the operator. Hoses, Tubes, and Fittings To inspect the hoses, tubes and fittings: 1. Inspect all hydraulic hoses, tubes, and fittings for wear, leakage, or damage (refer to Figure 7.5). The hydraulic reservoir is behind the door on the right side of the chassis. The pump is mounted on the engine. Fluid Level To inspect the fluid level: 1. Place the aerial platform on a level surface with the platform fully stowed. 20 S2770RT IS – 0102094 Chapter 7 – Prestart Inspection Punctures caused by bolts, screws, or nails are not a problem for foam filled tires. Outrigger Controls Visually inspect and test the operation of each outrigger from the outrigger controls (refer to Figure 7.7). ENABLE LEFT REAR RIGHT REAR LEFT FRONT RIGHT FRONT Figure 7.5 – Hoses, Tubes, and Fittings 2. Make sure the hoses are properly routed to avoid sharp edges, kinking, and scuffing. 0102102 3. Inspect the tubes for dents or other damage that may restrict fluid flow. 4. Make sure all hoses and tubes are held firmly in their support brackets. 5. Check under the chassis for fluid that has leaked. Hydraulic fluid leaks are easily visible on the ground. Tires and Wheels Visually inspect the tires and wheels (refer to Figure 7.6) to make sure they are suitable for service. Figure 7.7 – Outrigger Controls To inspect the outriggers: yy Inspect for hydraulic oil leaks and make sure the legs and shoes are free of deformation and damage. yy Make sure that each outrigger leg will fully extend and retract. Bubble Levels Visually inspect the bubble levels. Make sure they are properly attached to the chassis and are not damaged. Lower Control Station With no personnel or materials in the platform, test the operation of each control from the lower controls (refer to Figure 7.8). Ground Operation Button Control Selector Figure 7.6 – Tires and Wheels Platform Raise Button The aerial platform has foam filled tires. Foam filled tires do not have a pressure decal or a valve core. To inspect the tires and wheels: 1. Check the wheel lug nuts to see that none are missing, damaged, or loose. 2. Inspect for large holes or cuts where foam is coming out of the tire. Look for large embedded objects, such as angle iron, that can rip a tire open. S2770RT IS – 0102094 Emergency Stop Button Platform Lower Button Figure 7.8 – Lower Controls Operating Controls Use the following procedure to operate the machine from the lower controls. 21 Chapter 7 – Prestart Inspection 1. At the lower controls, pull the emergency stop button outward. Place the control selector in the lower control position. 2. Start the engine. 3. Let the engine warm to operating temperature. 4. Press and hold the ground operation button. Danger Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components. Stand clear of moving components while test operating the machine. 3. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure 7.9). ADanger Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings, structures, or other obstacles. Make sure all personnel stand clear of the aerial platform while performing the prestart inspection. AWarning The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury could result from such accidents. Do not operate the aerial platform if it is damaged or malfunctioning. 5. Test the operation of the platform raise and lower buttons in both directions. yy To raise the platform press and hold the platform raise button. yy To lower the platform press and hold the platform lower button. Emergency Stop To test the emergency stop button from the lower controls: 1. Push the emergency stop button (refer to Figure 7.8) inward. 2. Test the lower control functions to insure they no longer operate. Manual Emergency Lowering Pump The platform can be lowered in an emergency using the emergency lowering pump. The emergency lowering pump is behind the cowling door on the right side of the machine. Use the following procedure to test the emergency lowering system. 1. Use the lower controls to raise the platform a few feet. 2. Turn the engine off. 22 Scissor Lower Knob Brake Release Knob Pump Main Control Valve Assembly Figure 7.9 – Manual Emergency Lowering Pump 4. Pull and hold the scissor lower knob outward while pumping to lower the platform. Stop pumping and release the knob to stop descent of the platform. 5. Place the pump handle back in its holder. Structures Visually inspect all weldments and related components. It is important to inspect the fasteners that connect the components. Weldments To inspect the weldments: 1. Visually inspect all weldments for abnormal wear, abrasion, or deformation that could cause interference between moving parts. 2. Inspect the welds on the structural components. Pay particular attention to arm welds around pin bosses. The area to be inspected should be clean and free of dirt and grease. 3. Look for visible cracks in the welds and at the weld to parent material joints. A bright light may be used to provide adequate visibility of the inspection area. Rollers and Slide Blocks To inspect the rollers and slide blocks: 1. Visually inspect the scissors arm rollers at the front of the platform (refer to Figure 7.10). They must be free to move without obstruction. There is one roller on each side of the platform. S2770RT IS – 0102094 Chapter 7 – Prestart Inspection Top Rail Mid Rail Entry Gate Roller Figure 7.10 – Front of Platform 2. Raise the platform from the lower controls and visually inspect the slide blocks at the rear of the chassis (refer to Figure 7.11). There is one slide block on each side of the chassis. The slide blocks must be in good condition and free to move without obstruction. Toeboard Figure 7.12 – Platform To inspect the guardrail system: 1. Inspect all components of the guardrail system. The rails and toeboards must all be in place and free of any damage or deformation. 2. Visually check the rail and toeboard welds for cracks. 3. Visually check all bolts and nuts fastening the platform in place. They must be present and not show any signs of looseness. Slide Block 4. Inspect the entry gate so see that it swings freely, latches securely, and is not deformed in any way. Lanyard Anchors There are six lanyard anchors on the floor of the platform (refer to Figure 7.13): Figure 7.11 – Front of Chassis Fasteners To inspect the fasteners: 1. Visually inspect all fasteners to see that none are missing or loose. 2. Inspect all of the bolts, nuts, rollpins, collars, and snap rings that connect the elevating assembly. They should all be present, tight, and not damaged in any way. Upper Control Station Inspect the platform and upper controls, after verifying all functions operated properly from the lower controls. Guardrail System The guardrail system includes (refer to Figure 7.12): yy yy yy yy A top rail A mid rail An entry gate Toeboards around the sides of the platform. S2770RT IS – 0102094 Lanyard Anchor Figure 7.13 – Platform Floor To inspect the lanyard anchors: 1. Visually inspect the lanyard anchors to make sure they are in place and are not deformed. 2. Make sure the brackets are not deformed and that they are securely fastened to the platform floor. 23 Chapter 7 – Prestart Inspection Platform Extension Deck Latch handles on each side of the extension deck secures the extension deck to the main platform deck. ACaution The extension deck is free to move when the extension handle locks are disengaged. Personal injury may result from accidentally extending or retracting the deck. Make certain both extension handle locks are fully engaged when the deck is extended in the working position and when it is stowed. Do not attempt to extend or retract the platform unless the aerial platform is on a level surface. 7. Make sure the platform extension deck is locked in position. Operating Controls Use the following procedure to operate the machine from the upper controls. 1. At the lower controls, pull the emergency stop button outward and place the control selector in the upper control position. 2. At the upper controls (refer to Figure 7.15), pull the emergency stop button outward. Lift/Drive Handle To inspect the platform extension: 1. Inspect the extension handles and locks (refer to Figure 7.14) on each side of the platform to ensure they release to extend the platform. Slot on Guardrail Drive Speed Handle Emergency Stop Button Steer Handle Joystick Extension Handle Figure 7.15 – Upper Controls Lock Figure 7.14 – Platform Extension Handle 2. While facing the front of the platform, release the platform extension handle locks. Grasp the handles, raise them and push the extension deck forward to the desired position. Fully lower the handles and ensure the lock on each handle is engaged in the slot on the platform guardrail (refer to Figure 7.14). 3. Inspect the rollers on the platform extension. They must be in place, in good condition, and free to move without obstruction. 4. Inspect the weldments for deformation and damage. Try to move the rails back and forth to make sure the platform extension deck fully locks in position. 5. Visually check the platform welds for cracks. 6. While facing the front of the platform, release the platform extension handle locks. Grasp the handles, raise them and pull the extension deck backward to retract the deck. Fully lower the handles at the fully retracted, stowed position. Ensure the lock on each handle is engaged in the slot on the platform guardrail (refer to Figure 7.14). 24 3. Start the engine and let it warm to operating temperature. Danger Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings, structures, or other obstacles. Make sure all personnel stand clear of the aerial platform while performing the prestart inspection. Warning The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such accidents. Do not operate the aerial platform if it is damaged or malfunctioning. 4. Test the platform foot valve by moving the joystick without stepping on the foot valve. If movement occurs the interlock is not functioning properly. Do not operate the machine until the problem is corrected. 5. Test the operation of each control in both directions from the upper controls. 6. The drive range and maximum travel speeds are interlocked through a limit switch on the chassis that senses the platform position. When the platform is S2770RT IS – 0102094 Chapter 7 – Prestart Inspection raised approximately 1′ (0.3 m) the machine should travel in low speed only. To operate in high speed the platform must be stowed. Emergency Stop To test the emergency stop button from the upper controls: 1. Push the emergency stop button (refer to Figure 7.15) inward to block hydraulic power to the upper controls. 2. Test the upper controls to ensure they no longer operate. Horn Button The horn button is operational when the pressure in the air tank is sufficient to sound the horn. With the engine running, press the horn button to ensure that it sounds to warn personnel in the area. Placards and Decals To inspect the placards and decals: 1. Inspect all safety and operational placards and decals. Make certain they are in place, in good condition, and are legible. 2. Clean the placards and decals with soap and water, and a soft cloth if the words or pictures cannot be seen. ACaution Solvents may contain hazardous ingredients. Follow the manufacturer’s label for proper use and disposal. Wear protective gloves and splash-proof safety glasses when using solvents. 3. Remove wet paint overspray with a natural biodegradable solvent and a soft cloth. 4. Replace any missing, damaged, or illegible placards or decals before operating the aerial platform. Placard and decal kits are available from Snorkel. The safety related placards and decals are illustrated on the following pages. S2770RT IS – 0102094 25 Chapter 7 – Prestart Inspection Left Side DEATH OR SERIOUS INJURY CAN RESULT FROM TIPPING OVER. TO KEEP FROM TIPPING THIS MACHINE OVER FOLLOW THESE RULES. DO NOT RAISE OR DRIVE AN ELEVATED PLATFORM ON A SLOPE DO NOT RAISE OR DRIVE AN ELEVATED PLATFORM ON SOFT OR UNEVEN SURFACES GO NO CLOSER THAN 4 feet (1.2m) to ANY DROP OFF OR HOLE DO NOT RAISE A PLATFORM IN WIND ABOVE 28 MPH (12.5 M/S) 4 FT/1.2M OTHER ACTIONS CAN ALSO CAUSE THIS MACHINE TO TIP OVER DO NOT override safety devices. DO NOT overload the machine. DO NOT stand or sit on guardrails. DO NOT attach ropes or chains to guardrails. DO NOT carry loads outside the railing or use as a crane. TWO-TONE ALARM MEANS TIPOVER DANGER! LOWER PLATFORM IMMEDIATELY 1. 2. DO NOT ride platform while machine is on a truck, fork lift or other device. DO NOT use ladder, scaffold, or other means to increase size or platform height. DO NOT use with improperly inflated or damaged tires or wheels. OK 3. OK 4 FT/1.2M DO NOT use this machine without the railings and the entry gate in place. You could fall out and hurt or kill yourself. DO NOT use this machine if it is not operating correctly, or if any part of it is damaged, worn, or missing. An accident could cause injury or death. TO AVOID TIPOVER HAZARDS USE ON FLAT, LEVEL, AND SOLID SURFACES ONLY DO NOT let an untrained or unauthorized person use this machine. When you leave the machine unattended, remove the key, or turn off the battery switch on the base of the machine and lock the battery switch in the off position. DO NOT replace components critical to machine stability, such as batteries and wheel equipment, with lighter NOTE: STUDY THE OPERATOR'S MANUAL BEFORE OPERATING THIS MACHINE. 12574 Rear 26 S2770RT IS – 0102094 Chapter 7 – Prestart Inspection DANGER SHEARING HAZARD/CRUSHING HAZARD Death or serious injury might result from having body parts sheared or crushed as the platform descends. Keep away from closing scissor arms and keep out from under the platform as the platform comes down. 300700 DANGER YOU MUST NOT OPERATE THIS DEVICE UNLESS: 1. YOU HAVE BEEN TRAINED IN THE SAFE OPERATION OF THIS DEVICE AND HHHH 2. YOU KNOW AND FOLLOW THE SAFETY AND OPERATING RECOMMENDATIONS CONTAINED IN THE MANUFACTURER'S MANUALS, YOUR EMPLOYER'S WORK RULES, AND APPLICABLE GOVERNMENTAL REGULATIONS. HHHHHHHH AN UNTRAINED OPERATOR SUBJECTS HIMSELF AND OTHERS TO Right Side DEATH OR SERIOUS INJURY. 0323897 SAFETY BAR 24” STORAGE POSITION PROPER POSITION FOR USE S2770RT IS – 0102094 27 Chapter 7 – Prestart Inspection 28 S2770RT IS – 0102094 Chapter 7 – Prestart Inspection Prestart Inspection Checklist Item Operator’s Manual Engine Oil Level Fuel tank and line Hydraulic System Fluid level Hoses, tubes and fittings Tires Wheels Lower Control Station Operating controls Emergency stop Outriggers Operating controls Bubble levels Manual Emergency Lowering Pump Structures Weldments Rollers and slide blocks Fasteners Upper Control Station Guardrail system Platform extension/latch handles Lanyard anchors Operating controls Emergency stop Horn Placards and Decals S2770RT IS – 0102094 Inspect For In place, all pages readable and intact OK Between full and add marks Tank full, cap in place and tight/no leaks Between minimum and maximum marks, cap in place and tight No leaks Good condition All wheel lug nuts present and properly torqued Proper operation Shuts off lower controls/proper operation Proper operation In place, no deformation or damage Proper operation Welds intact, no damage or deformation In place, no damage or deformation In place, tight, and no damage Welds intact, no damage or deformation Proper operation, no damage or deformation In place, no damage or deformation Proper operation Shuts off upper controls/proper operation Sounds when activated In place and readable 29 Chapter 7 – Prestart Inspection 30 S2770RT IS – 0102094 Chapter 8 – Operation The aerial platform may be operated from either the lower or upper controls. ADanger The aerial platform is not electrically insulated. Death or serious injury will result from contact with, or inadequate clearance from, an energized conductor. Do not go closer than the minimum safe approach distance as defined by ANSI. ACaution Not all hydraulic fluid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only use hydraulic fluid as recommended. Use cold weather hydraulic oil as recommended in the machine General Specifications in temperatures of 10°F (0°C) or below. Pinch points may exist between moving components. Death or serious injury will result from becoming trapped between components, buildings, structures, or other obstacles. Make sure there is sufficient clearance around the machine before moving the chassis or platform. Allow sufficient room and time to stop movement to avoid contact with structures or other hazards. Preparing for Operation The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Operate the aerial platform on a firm, flat, level surface. Avoid travel speeds and/or rough terrain that could cause sudden changes in platform position. Do not drive or position the aerial platform for elevated use near any drop-off, hole, slope, soft or uneven ground, or other tip-over hazard. Before operating the outrigger controls, properly set up the aerial platform as described under Preparing for Operation. The platform rated work load is the total weight of the personnel and equipment that may be lifted in the platform. The work loads are stated on the platform rating placard at the entrance to the platform. ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Do not exceed the capacity values indicated on the platform rating placard. Use the following procedure to prepare the aerial platform for operation: 1. Perform a prestart inspection as described in Chapter 7. 2. Close and latch the doors. Outriggers ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Make certain that the ground surface is capable of supporting the weight of the machine including personnel and work equipment in the platform. Use the following procedure to properly set the outriggers using the outrigger controls: 1. Start the engine and let it warm to operating temperature. 2. Hold the enable handle (refer to Figure 8.1) downward while operating the outrigger controls. Capacity values indicate the rated lifting capacity and do not indicate aerial platform stability. The operator bears ultimate responsibility for ensuring that the aerial platform is properly set up for the particular conditions encountered. ENABLE LEFT REAR RIGHT REAR LEFT FRONT RIGHT FRONT Hydraulic System Cold Weather Warm-Up Cold, thick hydraulic oil does not flow well and may cause delay in response to control movement. Cold hydraulic oil may also cause cavitation and pump damage. Manually Warming The Hydraulic System The hydraulic oil may be warmed by bottoming out the platform lift cylinder. Lower the platform so the cylinder is completely retracted and continue to operate the platform lower function. With the cylinder bottomed out the oil flow will produce heat to warm the hydraulic oil. S2770RT IS – 0102094 0102102 Figure 8.1 – Outrigger Controls 3. Hold an outrigger handle downward to lower the outrigger leg until the pad contacts the ground. Repeat until all four outriggers have been lowered. At least one of the outriggers should raise a tire above ground. 31 Chapter 8 – Operation 4. Watch the bubble level while setting the outriggers. Lower the outriggers, one at a time, just enough to center the bubble in the circle on top of the gauge. 5. Adjust the position of the outrigger legs until the bubbles (refer to Figure 8.2) are centered between the marks on the levels, indicating that the chassis is level. Figure 8.2 – Bubble Levels Use the following procedure to raise the outriggers using the outrigger controls: 1. Fully lower the platform to the stowed position. 2. Hold the enable handle (refer to Figure 8.1) downward while operating the outrigger controls. 3. Hold an outrigger handle upward to raise the outrigger leg. Repeat until all four outriggers have been fully raised. Operating with Outriggers Lowered on Slopes If the machine is raised off the ground using the outriggers, there is risk of it sliding if it is on a slope or ramp. Contributing factors include newly painted surfaces, icy, wet or oily surfaces, as well as sandy or any loosely covered surface. Do not position the machine on surfaces where there is risk of it sliding. Sliding can occur if the platform is elevated or when fully lowered. Figure 8.3 – Stepped Level Surfaces Do not position the machine where there is risk of it sliding due to unstable surfaces (refer to Figure 8.4). Do not attempt to use wheel chocks or outrigger pads beneath the outrigger foot or the tires. The outrigger feet must be lowered only onto a firm surface that can fully support the weight of the machine and its rated capacity. Positioning the outrigger feet on stepped level surfaces is acceptable (refer to Figure 8.3). 32 S2770RT IS – 0102094 Chapter 8 – Operation Use the following procedure to operate the machine from the lower controls: 1. Pull the emergency stop button (refer to Figure 8.5) outward, to the on position and place the control selector in the lower control position. Ground Operation Button Platform Raise Button Control Selector Emergency Stop Button Platform Lower Button Figure 8.5 – Lower Controls 2. Start the engine and let it warm to operating temperature. ADanger Pinch points exist on the elevating assembly. Death or serious injury will result if the platform lowers onto personnel. Stand clear while raising and lowering the platform. 3. Press and hold the ground operation button while operating the appropriate platform raise or lower button to raise or lower the platform. 4. Release the function button to stop movement. Figure 8.4 – Sloped Surfaces Lower Controls The lower controls override the upper controls. This means that the lower controls can always be used to operate the platform regardless of the position of the upper control emergency stop button. Only the platform raise and lower functions may be operated from the lower controls. The lower controls may be used for initial set up of the aerial platform, and for positioning the platform while testing and during inspection. Before operating the lower controls, properly set up the aerial platform as described under Preparing for Operation. Upper Controls The upper controls may be used for driving and positioning the aerial platform while on the job. Before operating the upper controls, properly set up the aerial platform as described under Preparing for Operation. Use the following procedure to operate the aerial platform from the upper controls: 1. At the lower controls, pull the emergency stop button (refer to Figure 8.5) outward, to the on position and place the control selector in the upper control position. 2. Start the engine and let it warm to operating temperature. 3. Enter the platform and securely close the gate. S2770RT IS – 0102094 33 Chapter 8 – Operation 4. Determine the desired drive range for the specific driving conditions. Place the drive range handle (refer to Figure 8.6) in the appropriate position to achieve the desired drive wheel operation. • Use high range – Rabbit when traveling across firm, flat, level surfaces. High range can only be activated when the platform is stowed. High range is for high speed, low torque operation. 2. Place the lift/drive handle in the lift position. 3. Step down on the platform foot valve (refer to Figure 8.7). This valve must be held down to operate the upper controls. • Use low range – Turtle for driving on loading ramps or other steep grades and when safety considerations demand slow deliberate machine movement. Low range is for low speed, high torque operation. Lift/Drive Handle Platform Foot Valve Drive Speed Handle Emergency Stop Button Figure 8.7 – Platform 4. Push the joystick forward to raise the platform. Steer Handle Joystick 5. Pull the joystick backward to lower the platform. 6. If the tilt alarm sounds, lower the platform and drive to a level surface or activate the speed level to level the platform. Figure 8.6 – Upper Controls Platform Use care when entering and exiting the platform to avoid slipping and/or falling. Fully close the entry gate when the platform is occupied. ADanger The potential for an accident increases when the fold down rails are lowered. Death or serious injury can result in such accidents. Do not elevate the platform with the fold down rails lowered. Use extreme care when moving the aerial platform while the fold down rails are lowered. Be sure the fold down guardrails are up and the hardware is securely tightened, anytime the machine is not being transported. Raising and Lowering The raise speed is proportional to the joystick position. The farther the joystick is moved, the faster the platform raises. There is only one lowering speed. 7. Releasing the control to its neutral position, or releasing the foot valve will stop movement. Driving and Steering ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Do not drive an elevated aerial platform on soft, uneven, or sloping surfaces. Do not drive the machine on grades that exceed 30 percent. A fully stowed machine may be operated on grades up to 30 percent. A grade of 30 percent is a 36″ (0.91 m) vertical rise in 10′ (3.05 m) horizontal length. AWarning Death or serious injury could result from improperly driving or steering the aerial platform. Read and understand the information in this manual and on the placards and decals on the machine before operating the aerial platform on the job. Use the following procedure to raise the platform: 1. Move the aerial platform to a firm, flat, level surface. 34 S2770RT IS – 0102094 Chapter 8 – Operation Use the following procedure to operate the drive and steer functions. 1. Place the lift/drive handle (refer to Figure 8.6) in the drive position. 2. Step down on the platform foot valve. Do not use the aerial platform if it drives faster than 0.64 mph (1 km/h) when the platform is out of the stowed position. Fold Down Guardrails The platform guardrails may be folded down to pass the machine under low height obstructions. 3. Push the drive joystick forward to move the chassis forward. Pull the joystick backward to move the chassis backward. The drive speed is proportional to the joystick position. A ½″ wrench and socket will be needed to remove the hardware from the guardrail. 4. To stop drive motion, return the joystick to neutral. The potential for an accident increases when the fold down rails are lowered. Death or serious injury can result in such accidents. Do not elevate the platform with the fold down rails lowered. Use extreme care when moving the aerial platform while the fold down rails are lowered. Note To make an emergency stop push the emergency stop inward button to apply the parking brakes. 5. The steer handle controls the two front wheels to steer the aerial platform. yy To steer to the right, hold the handle in the steer right position. yy To steer to the left, hold the handle in the steer left position. Note The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn. 6. After driving to the desired location, release the foot valve, or push the emergency stop button inward to apply the parking brakes. Drive Speeds The drive speed is proportional to the joystick position. The farther the joystick is moved, the faster the travel speed. Always slow down and switch the drive system to low range before traveling over rough terrain or any sloped surface. ADanger Use the following procedure to fold down the guardrails: 1. From the lower controls, fully lower the platform and turn the machine off. 2. Enter the platform and close the gate. 3. Remove the upper control panel from the side guardrail and place it on the floor of the platform. ACaution The rails are free to move downward after removing the hardware. Improper lifting can cause personal injury. Be prepared to hold the weight of the rails before beginning to lower them onto the platform. 4. At the front of the platform, remove the snapper pins from the corners of the front guardrail. Refer to Figure 8.8. Drive speed ranges are interlocked through limit switches that sense the platform position. yy When the platform is elevated, only the slowest drive speed will work regardless of the drive speed selected. yy To avoid a sudden speed change from high to low, always bring the machine to a stop before raising the platform from the stowed position. AWarning The potential for an accident increases when safety devices do not function properly. Death or serious injury could result from such accidents. Do not alter, disable, or override any safety device. S2770RT IS – 0102094 Front Guardrail Hardware Figure 8.8 – Platform 5. Fold the front guardrail inward so it rests on the platform. 35 Chapter 8 – Operation 6. At the rear of the platform, close and latch the entry gate and remove the hardware snapper pins from the corners of the rear guardrail. Refer to Figure 8.9. Rear Guardrail Hardware Side Guardrail Hardware ACaution The extension deck is free to move when the extension handle locks are disengaged. Personal injury may result from accidentally extending or retracting the deck. Make certain both extension handle locks are fully engaged when the deck is extended in the working position and when it is stowed. Do not attempt to extend or retract the platform unless the aerial platform is on a level surface. 2. While facing the front of the platform, release the platform extension handle locks. Grasp the handles, raise them and push the extension deck forward to the desired position. Fully lower the handles and ensure the lock on each handle is engaged in the slot on the platform guardrail (refer to Figure 8.10). Slot on Guardrail Figure 8.9 – Lower Controls 7. Fold the rear guardrail inward so it rests on the platform being careful to keep the entry gate latched. 8. Lift up on the right guardrail and fold it inward so it rests on the platform. Repeat with the left guardrail. yy Extension Handle If the guardrail will not fold down, loosen the hardware at the bottom of the side guardrail. Use the following procedure to reassemble the guardrails before operating the aerial platform from the upper controls: 1. Fully raise the right guardrail to the upright position and push downward on the guardrail making sure it securely sets into the platform. Repeat with the left guardrail. 2. Fully raise the rear guardrail to the upright position, being careful to keep the entry gate latched. Connect the rear guardrail to the left and right guardrail by reinstalling the hardware (nuts, bolts, spacer, washers etc.) to the corners of the guardrails and tighten securely. 3. Fully raise the front guardrail to the upright position. Connect the rear guardrail to the left and right guardrail by reinstalling the snapper pins to the corners of the guardrails. Platform Extension Deck The platform extension deck can be securely locked into eleven different positions. Use the following procedure to extend the platform. 1. Enter the platform and secure the door. Lock Figure 8.10 – Platform Extension Handles 3. Lock the extension handles in the downward position. Use the following procedure to retract the platform. 1. Enter the platform and secure the door. ACaution The extension deck is free to move when the extension handle locks are disengaged. Personal injury may result from accidentally extending or retracting the deck. Make certain both extension handle locks are fully engaged when the deck is extended in the working position and when it is stowed. Do not attempt to extend or retract the platform unless the aerial platform is on a level surface. 2. While facing the front of the platform, release the platform extension handle locks. Grasp the handles, raise them and pull the extension deck backward to retract the deck. Fully lower the handles at the fully retracted, stowed position. Ensure the lock on each handle is engaged in the slot on the platform guardrail (refer to Figure 8.10). 3. Lock the extension handles in the downward position. 36 S2770RT IS – 0102094 Chapter 9 – Stowing and Transporting To prevent unauthorized use and damage, properly stow the aerial platform at the end of each work day. It must also be properly stowed while transporting. Stowing Use the following procedure to properly stow the aerial platform. 1. Fully retract the extension deck and lower the platform. 2. At the upper controls, push the emergency stop button inward. 3. Close and latch the platform entry gate. yy Choosing the proper selection and use of transportation and tie-down devices. yy Making sure the equipment used is capable of supporting the weight of the aerial platform. yy Making sure all manufacturer’s instructions and warnings, regulations and safety rules of their employer, the DOT, and/or any other state or federal law are followed. Driving Use the following procedure to drive the aerial platform onto the transport vehicle: 4. Completely raise all four outriggers.. 1. Locate the transport vehicle so it is in a straight line with the loading ramp. 5. At the lower controls, push the emergency stop button inward. 2. Chock the vehicle wheels so it cannot roll away from the ramp while the machine is loaded. 6. If the engine has just been under load and is hot, let it idle for five minutes before turning it off. 3. Remove tools, materials, or other loose objects from the platform. 7. Close and latch the cowling doors. 4. Fully lower the aerial platform into the stowed position. Transporting The aerial platform may be moved on a transport vehicle. Depending on the particular situation, the aerial platform may be driven, lifted with a forklift, winched, or hoisted onto a vehicle such as a truck or trailer. Driving is the preferred method. ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Do not drive on ramps that exceed 30 percent grade, or where conditions of the ramp could cause driving to be hazardous. Drive the aerial platform onto the transport vehicle if the ramp incline is within the 30 percent grade capability of the aerial platform. A 30 percent grade is a 36″ (0.91 m) vertical rise in 10′ (3.05 m) horizontal length. Use a winch to load and unload the aerial platform on ramps that exceed the grade capability of the machine. A winch may also be used when conditions of the ramp could cause driving to be hazardous. The equipment used to load, unload, and transport the aerial platform must have adequate capacity. Refer to Chapter 2 to determine the approximate weight of the aerial platform. The user assumes all responsibility for: yy Choosing the proper method of transportation. S2770RT IS – 0102094 ACaution The aerial platform has low ground clearance. Make certain that the transition from the loading ramp to the trailer is not sharp enough that the bottom of the machine drags while loading. 5. Using the upper controls, drive the aerial platform to the foot of the loading ramp with the front wheels nearest the ramp. Make sure the aerial platform is centered with the ramps and that the steering wheels are straight. ADanger The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over accident. Set the drive range to low before driving up or down a grade. 6. Place the drive speed handle in the low position. 7. Drive the aerial platform onto the transport vehicle in a straight line through the grade transitions with minimal turning. 8. Chock the machine wheels. Lifting With a Forklift Use the following procedure to lift the aerial platform with a forklift. 1. Properly stow the aerial platform. 2. Remove all personnel, tools, materials, or other loose objects from the platform. 37 Chapter 9 – Stowing and Transporting ADanger Lifting the aerial platform with the forklift forks positioned improperly can produce enough force to damage machine components. When lifting the machine from the side, place the forklift forks directly under the designated lift points. 3. To lift the machine from the side, place the forklift forks directly under the designated points under the chassis. 4. Do not raise the aerial platform higher than necessary to transport it. Drive the forklift slowly and carefully when transporting the aerial platform. 7. Open the door on the right side of the chassis to access the manual emergency lowering pump (refer to Figure 9.2). Scissor Lower Knob Valve Brake Release Knob Pump Main Control Valve Assembly Winching Use the following procedure to winch the aerial platform onto the transport vehicle: 1. Position the transport vehicle so the aerial platform will not roll forward after it is loaded. Figure 9.2 – Manual Emergency Lowering Pump 2. Remove tools, materials, or other loose objects from the platform. 8. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure 9.2). 3. Drive the machine to the foot of the loading ramp with the front wheels nearest the ramp. Make sure the machine is centered with the ramps and that the steering wheels are straight. 9. Pull the brake knob outward and twist to lock in position. 4. Properly stow the aerial platform. 5. Chock the wheels to prevent uncontrolled motion of the aerial platform. 6. Attach the winch to the tie-down lugs (refer to Figure 9.1) on the front of the chassis. 10. Fully turn the valve counterclockwise until loose. 11. Pump the handle several times until pressurized then stow the handle. 12. Remove the wheel chocks and use the winch to position the aerial platform on the transport vehicle. AWarning The aerial platform is free to move when the brakes are released. Death or serious injury could result. Re-enable the brakes before operating the aerial platform. 12. After moving the aerial platform, fully turn the valve clockwise until tight and twist to unlock the brake knob. 13. After unloading the aerial platform from the transport vehicle, verify that the drive system and brakes operate properly before operating the aerial platform. Tie-Down/Lifting Lugs Figure 9.1 – Front Tie-Down/Lifting Lugs AWarning The aerial platform is free to move when the brakes are released. Death or serious injury could result. Re-enable the brakes before operating the aerial platform. 38 Hoisting Use a four point sling arrangement attached to the lifting lugs when hoisting the aerial platform. Machine damage can occur if the sling is attached anywhere else. AWarning The potential for an accident increases when the aerial platform is lifted using improper equipment and/or lifting techniques. Death or serious injury S2770RT IS – 0102094 Chapter 9 – Stowing and Transporting could result from such accidents. Use proper equipment and lifting techniques when lifting the aerial platform. Know the weight of the aerial platform and the capacity of the lifting devices before hoisting. yy Lifting devices include the hoist or crane, chains, straps, cables, hooks, sheaves, shackles, slings, and other hardware used to support the machine. yy The empty vehicle weight is stamped on the serial number placard and is listed in Chapter 2. Do not run the sling cable through the lifting lugs. yy Cable damage and/or failure can result from the cable contacting the sharp corners of the lug. yy There is no effective way of putting a corner protector in the hole of the lug. 5. Use spreader bars of sufficient length to keep the chains, straps, or cables from contacting the elevating assembly or platform. yy When using cables, use rigid corner protectors at any point where the cable contacts on sharp corners to prevent damaging the cable. yy Careful rigging of the spreaders is required to prevent machine damage. The user assumes all responsibility for: yy Making sure the equipment used is capable of supporting the weight of the aerial platform. yy Making sure all manufacturer’s instructions and warnings, regulations and safety rules of their employer and/or any state or federal law are followed. Use the following procedure to hoist the aerial platform onto the transport vehicle: 1. Properly stow the aerial platform. 2. Inspect the front lifting lugs and the rear lifting lugs (refer to Figures 9.1 and 9.3) to make sure they are free of cracks and are in good condition. There are four lugs on the rear of the chassis and two on the front. Have any damage repaired by a qualified service technician before attempting to hoist the machine. 6. Adjust the length of each chain or strap so the aerial platform remains level when raised off the ground. 7. Use the hoist or crane to carefully raise and position the aerial platform onto the transport vehicle. Securing for Transport Use the following procedure to secure the aerial platform on the transport vehicle: 1. Chock the wheels. 2. Remove all personnel, tools, materials, or other loose objects from the platform. 3. Properly stow the aerial platform. 4. Place the lower controls emergency stop button in the off position. 5. Close and latch the cowling doors. ACaution Ratchets, winches, and come-alongs may produce enough force to damage machine components. Do not over tighten the straps or chains when securing the aerial platform to the transport vehicle. Tie-Down/Lifting Lugs Figure 9.3 – Rear Tie-Down/Lifting Lugs 6. Use chains or straps to securely fasten the aerial platform to the transport vehicle using the front and rear tie-down lugs as attachment points. Proper tiedown and hauling is the responsibility of the carrier. 3. Remove all personnel, tools, materials, or other loose objects from the platform. 4. Connect the chains or straps to the lifting lugs using bolted shackles. Hooks that fit properly in the lugs and that have latching mechanisms to prevent them from falling out under a slack line condition may also be used. S2770RT IS – 0102094 39 Chapter 9 – Stowing and Transporting 40 S2770RT IS – 0102094 Chapter 10 – Emergency Operation If the hydraulic system fails, the aerial platform may be lowered using the manual emergency lowering pump. Manual Emergency Lowering Pump The emergency lowering pump allows the platform to be lowered only. Only use this method if the engine will not start and the hydraulic system has failed. Use the following procedure to manually lower the platform. ADanger Pinch points exist on the elevating assembly. Death or serious injury will result if the platform lowers onto personnel. Stand clear while raising and lowering the platform. 1. Open the door on the right side of the chassis to access the manual emergency lowering pump. 2. The pump handle is mounted next to the lower controls. Insert the handle into the pump (refer to Figure 10.1). Scissor Lower Knob Brake Release Knob Pump Main Control Valve Assembly Figure 10.1 – Behind Right Cowling Door 3. Pull and hold the scissor lower knob outward while pumping to lower the platform. Stop pumping and release the knob to stop descent of the platform. AWarning The potential for an accident increases when safety devices do not function properly. Death or serious injury could result from such accidents. Fully close the platform knob before operating the aerial platform. 4. Place the pump handle back in its holder. S2770RT IS – 0102094 41 Chapter 10 – Emergency Operation 42 S2770RT IS – 0102094 Chapter 11 – Troubleshooting The troubleshooting chart may be used to locate and eliminate situations where machine operation may be interrupted. If the problem cannot be corrected with the action listed, stow the machine and remove it from service. Repairs must be made by qualified maintenance personnel. Troubleshooting Chart Symptom Possible Cause Corrective Action All functions stop working. Low fluid level in reservoir. Check fluid level. Add correct type of fluid if necessary. Engine or pump failure. Manually lower the platform using the emergency lowering knob. Emergency stop button at lower controls is pushed in to the off position. Pull the emergency stop button outward. Control selector is in the upper control position. Place the selector in the lower control position. Ground operation button not held in the on position. Press and hold the ground operation button inward while operating the control buttons. Emergency stop buttons at lower and upper controls is in the off position. Pull the emergency stop buttons outward. Control selector at lower controls is in the lower control position. Place the selector in the upper controls position. Platform foot valve not engaged. Step down on platform foot valve while operating controls. Platform and drive functions seem sluggish. Hydraulic oil is cold and thick. Use cold weather hydraulic oil as recommended for weather conditions. Warm oil before operating the machine. Platform drifts down. Hydraulic system malfunction. Stow the machine and do not operate until repairs are made. Can not reach maximum drive speed of 2.8 mph (4.5 km/h). Load capacity exceeded. Remove load from platform. Refer to platform capacity placard for maximum capacity. Machine on too steep a grade. Fully lower the platform and drive to a level surface. Drive range handle is in low. Place the handle in the high position. Platform is stowed. Normal operation. The tilt alarm is operational only when the platform is elevated. Lower controls do not work. Upper controls do not work. Tilt alarm does not work. S2770RT IS – 0102094 43 Chapter 11 – Troubleshooting Symptom Possible Cause Corrective Action Drive functions do not work. Machine on too steep a grade. Lower the booms and drive to a level surface. Low hydraulic system pressure. Stow the machine and do not operate until repairs are made. All outriggers are not fully raised. Fully raise all four outriggers. Wheels will not turn when winching. Brakes are not released. Hold the brake release knob outward while winching the machine. Hydraulic fluid temperature 200°F (93°C) or more. Prolonged operation or driving. Stop operation until fluid cools. High pressure fluid return to reservoir caused by kinked or twisted hose. Remove the kink or twist from the hose. Let fluid cool before operating. Hydraulic system component failure. Stow the machine and do not operate until repairs are made. Failure of hose, tube, fitting, seal, etc. Do not operate machine until repairs are made. Severe hydraulic leak. 44 S2770RT IS – 0102094 Appendix A – Glossary aerial platform – a mobile device that has an adjustable position platform, supported from ground level by a structure. ambient temperature – the air temperature of the immediate environment. authorized personnel – personnel approved as assigned to perform specific duties at a specific location. base – the relevant contact points of the aerial platform that form the stability support (e.g. wheels, casters, outriggers, stabilizers). center of gravity – the point in the aerial platform around which its weight is evenly balanced. chassis – the integral part of the aerial platform that provides mobility and support for the booms. elevating assembly – the assembly located between the chassis and the platform which is used to raise and lower the platform. personal fall arrest system – a fall protection system that is used while working on an unprotected edge (such as a roof top with no guardrail). This system includes a harness, lanyard or other connecting device, a fall arrestor, an energy absorber or decelerator, an anchorage connector, and a secure anchorage such as a building beam, girders or columns. An aerial platform is not a fall arrest anchorage. platform – the portion of an aerial platform intended to be occupied by personnel with their tools and materials. platform height – the vertical distance measured from the floor of the platform to the surface upon which the chassis is being supported. prestart inspection – a required safety inspection routine that is performed daily before operating the aerial platform. qualified person – a person, who by reason of knowledge, experience, or training is familiar with the operation to be performed and the hazards involved. fall restraint – a system that is used while working on a boom lift within the boundaries of platform guardrails to provide restraint from being projected upward from the platform. This system includes a harness or belt, lanyard, and a lanyard anchor. Although federal regulations, OSHA, ANSI, and Snorkel do not require the use of additional fall protection beyond the platform guardrails on scissor lift aerial platforms, local, state, or employer rules may require their use. rated work load – the designed carrying capacity of the aerial platform as specified by the manufacturer. floor or ground pressure – the maximum pressure, expressed in pounds per square inch, a single wheel concentrates on the floor or ground. gradeability – the maximum slope that the aerial platform is capable of travel. turning radius – the radius of the circle created by the wheel during a 360° turn with the steering wheels turned to maximum. Inside turning radius is the wheel closest to the center and outside turning radius is the wheel farthest from the center. guardrail system – a vertical barrier around the platform to prevent personnel from falling. unrestricted rated work load – the maximum designed carrying capacity of the aerial platform allowed by the manufacturer in all operating configurations. hazardous location – any location that contains, or has the potential to contain, an explosive or flammable atmosphere as defined by ANSI/NFPA 505. upper controls – the controls located on or beside the platform used for operating some or all of the functions of the aerial platform. level sensor – a device that detects a preset degree of variation from perfect level. The level sensor is used to sound an alarm if operating on a slope greater than the preset value. wheelbase – the distance from the center of the rear wheel to the center of the front wheel. lower controls – the controls located at ground level for operating some or all of the functions of the aerial platform. manufacturer – a person or entity who makes, builds or produces an aerial platform. safety prop – a bar that when properly positioned mechanically prevents the platform from lowering. stow – to place a component, such as the platform, in its rest position. working envelope – the area defined by the horizontal and vertical limits of travel that the platform may be positioned in. working height – platform height plus six feet. maximum travel height – the maximum platform height or the most adverse configuration(s) with respect to stability in which travel is permitted by the manufacturer. maximum wheel load – the load or weight that can be transmitted through a single wheel to the floor or ground. Minimum Safe Approach Distance – the minimum safe distance that electrical conductors may be approached when using the aerial platform. Also called M.S.A.D. operation – the performance of any aerial platform functions within the scope of its specifications and in accordance with the manufacturer’s instructions, the users work rules, and all applicable governmental regulations. operator – a qualified person who controls the movement of an aerial platform. outrigger – a mechanical tip-over prevention structure consisting of a hydraulically extended leg used to make ground contact to aid in stabilizing the machine. S2770RT IS – 0102094 Snorkel Product Warranty Policy 1. Snorkel warrants, its authorized sales and service centers (herein referred to as “SSC”), each new machine manufactured and sold by it to be free from defects in material and workmanship for a period of two (2) years from date of delivery to any customer. The warranty will apply subject to the machine being operated in accordance with the rules, precautions, instructions and maintenance requirements outlined in the relevant Snorkel Operator and Parts/ Service manuals. Snorkel further warrants the structural components, specifically the mainframe chassis, turntable, booms and/or scissor arms of each new machine manufactured by it to be free from defects in material and workmanship for an additional period of three (3) years. Any such part or parts which, upon examination by the Snorkel Warranty Department or appointed representative, are found to be defective will be replaced or repaired by Snorkel through local authorized Dealers. The structural warranty specifically excludes adverse effects on the machine structure arising from damage, abuse or misuse of the equipment. 2. Machines may be held in an authorized Distributor/ SSC’s stock for a maximum period of six (6) months from the date of shipment from Snorkel, before the warranty period is automatically initiated on each machine. 3. It is the responsibility of the Distributor/SSC to complete and return to Snorkel a Pre-delivery Inspection Record, Warranty Registration Form, before the act of rental / loan / demonstration of the machine or delivery to an end user. In the case of direct sale to end customers the same responsibility lies with the end customer. 4. Any end customer, SSC, distributor or dealer shall not be entitled to the benefits of this warranty and Snorkel shall have no obligations here under unless the “Pre-Delivery and Inspection Record” has been properly completed and returned to the Snorkel Warranty department within fifteen (15) days after delivery of the Snorkel product to the Customer or Dealer’s demonstration / rental fleet. Snorkel must be notified, in writing, within ten (10) days, of any machine sold to a Customer from a Dealer/SSC’s rental fleet during the warranty period. 5. Any part or parts which upon examination by the Snorkel Product Support Department are found to be defective within the specified warranty period, will be replaced or repaired at the sole discretion of Snorkel through its local Authorized Distributor/SSC, at no charge. Any parts replaced under warranty must be original Snorkel parts obtained through an authorized Snorkel Distributor/SSC unless expressly agreed otherwise in writing and in advance by Snorkel’s warranty department. 6. All parts claimed under warranty must be held available for return and inspection upon request for a period of 90 days from date of claim submission, it is necessary that all parts are individually tagged or marked with their part number and the warranty claim number. All parts returning should be still in a factory state, free of any alteration to the original design. If the parts are subject to repair it will need to be pre authorized by the Snorkel Product Support Group and or Warranty Department prior to the repair being completed. After 90 days all parts replaced under warranty which have not been returned, to Snorkel should be destroyed. Failure to produce parts requested by the Warranty Administrator for inspection within a period of 14 days will result in the claim being automatically rejected in full. Materials returned for warranty inspection must have the following procedure: yy yy yy yy yy Carefully packaged to prevent additional damage during shipping Drained of all contents and all open ports capped or plugged Shipped in a container tagged or marked with the RMA number Shipped PREPAID (ground service only). Any item(s) returned for warranty by any other means may be refused and returned, unless prior approval is agreed with Snorkel. Snorkel Warranty Statement Effective 1/1/2017 Snorkel Product Warranty Policy 7. At the direction of the Snorkel Warranty department, any component part(s) of Snorkel products to be replaced or repaired under this warranty program must be returned freight prepaid for inspection. An RMA (Returns material authorization) must be requested from Snorkel Warranty department, a copy to be placed with the returning component part(s). 8. All warranty replacement parts will be shipped freight prepaid (standard charges, ground shipping only) from the Snorkel Parts department, Service Department or from the Vendor to Dealer/SSC or Customer. Any other shipping method is the customer responsibility. 9. All warranty claims are subject to approval by Snorkel Service department. Snorkel reserves the right to limit or adjust claims with regard to defective parts, labor or travel time based on usual and customary guidelines. 10. Reimbursement policy, labor will be paid at 75% of posted hourly shop rate. Travel time will be paid at $50 per hour up to a maximum of 3 hours. Snorkel will pay 1 hour of troubleshooting time per warranty claim, unless expressly agreed otherwise in writing and in advance by Snorkel’s Warranty Department. An annual rate declaration must to be supplied to the Snorkel Warranty administrator by January 31st and will be used as the reimbursable rate for that calendar year. yy yy yy REPLACEMENT PARTS WARRANTY Any part replaced under this limited warranty is not subject to further warranty cover beyond the normal warranty period of the machine upon which the part was installed. Any replacement parts sold (not delivered under a warranty claim) will be subject to a warranty period of (6) six months from the date of invoice. Parts held by an authorized Distributor/SSC are covered under warranty for a period of (12) twelve months from the date of invoice, provided that those parts have been subject to appropriate storage to prevent damage and deterioration (conditional on Snorkel review). CLAIM PROCEDURE The Snorkel Warranty department must be notified within forty-eight hours (48) of any possible warranty situation during the applicable warranty period. Personnel performing major warranty repair or parts replacement must obtain specific approval by the Snorkel Warranty department prior to performing the warranty repair or replacement. When a Distributor/SSC/Customer perceive a warranty issue to exist the following steps must be adhered to: yy yy yy yy yy yy yy yy yy Customer/SSC/Distributor to place a purchase order for genuine Snorkel replacement parts. Snorkel to dispatch parts via the requested method (in line with the required response time). Confirmation that a qualified technician is available to replace the part and that this person has been accepted by Snorkel to carry out such work under the warranty of the machine. Failure to do this may nullify the warranty. Customer/SSC/Distributor to allocate a warranty claim number to the repair. All correspondence in respect of the claim to be on an official Snorkel warranty claim form as supplied by Snorkel’s warranty department. All warranty claims must be submitted within 30 days of the date of the machine repair. FREIGHT DAMAGE If a machine is received in a damaged condition, then the damage must be noted on the bill of lading and/ or delivery documents and photographs must be taken at the point of delivery, prior to signing acceptance of the consignment. The freight company and Snorkel must be contacted by the Distributor and a damage claim registered by either party immediately. The above requirements apply only to freight damage associated with equipment supplied by Snorkel transport. Customer freight issues are excluded from this warranty policy. Snorkel Warranty Statement Effective 1/1/2017 Snorkel Product Warranty Policy THIS PRODUCT WARRANTY POLICY SPECIFICALLY EXCLUDES: 1. Engines, motors, tires and batteries are manufactured by specialist suppliers to Snorkel, who furnish their own warranty policies. Snorkel will, however, to the extent permitted pass through any such warranty protection to the Distributor/SSC/Customer. 2. Any Snorkel product which has been modified or altered outside Snorkel factories without written approval, if such modification or alteration, in the sole judgment of Snorkel Engineering and/or Service Departments, adversely affects the stability, reliability or service life of the Snorkel product or any component thereof. 3. Any Snorkel product which has been subject to misuse and abuse, improper maintenance or accident. “Misuse” includes but is not limited to operation beyond the factory-rated load capacity and speeds. “Improper maintenance” includes but is not limited to failure to follow the recommendations contained in the Snorkel Operation, Maintenance, and repair Parts Manuals. 4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the type, application or type of environment in which the machine may be used; such as, but not limited to sandblasting applications. 5. Routine maintenance, routine maintenance items and minor adjustments are not covered by this warranty, including but not limited to hydraulic fluid, filters and lubrication, paint and decals, engine tune-up, brake adjustments etc. Snorkel will not cover leaks from fittings, hoses and any other connection points after the unit has been in service for 90 days or 150 hours of operation which ever comes first. 6. Any Snorkel product that has come into direct contact with any chemical or abrasive material. 7. Incidental or consequential expenses, losses, or damages related to any part or equipment failure, including but not limited to freight cost to transport the machine to a repair facility, downtime of the machine, lost time for workers, lost orders, lost rental revenue, lost profits, expenses or increased cost. This warranty is expressly in lieu of all other warranties, representations or liabilities of Snorkel, either expressed or implied, unless otherwise amended in writing by Snorkel. 8. Snorkel warranty policy does not cover any duties, taxes, environmental fees including without limitation, disposal or handling of tires, batteries and petrochemical items. 9. Items specifically excluded are: fuel injectors, motor brushes, glow plugs, contactor tips and springs, filters, lamp bulbs, lamp lenses, coolants, lubricants, brake pads and cleaning materials. 10. Failure of replacement parts due to fault misdiagnosis or incorrect fitting by the Distributor/SSC/Customer. SNORKEL MAKES NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THIS LIMITED WARRANTY. SNORKEL MAKES NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND DISCLAIMS ALL LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED TO INJURY TO PERSONS OR PROPERTY. Snorkel Warranty Statement Effective 1/1/2017 Snorkel Product Warranty Policy Wherever possible the end customer shall obtain all warranty support and make all warranty claims through the local Snorkel authorized Distributor/SSC/Dealer. Warranty support should be from the Distributor/SSC/Dealer from whom the Snorkel product was purchased. Where Snorkel equipment is supplied directly from the factory the end customer, or if unable to contact the Distributor/SSC/Dealer, may contact the Snorkel Warranty Department for further assistance. APPEAL The buyer may appeal in writing against a rejected or adjusted claim to Snorkel warranty department within a period of 21 days of receiving the rejection or adjustment notice. The appeal should be grounded on express reasons and supported by relevant evidence. Appeals received outside of this time limit will not be considered. SNORKEL WARRANTY SCHEDULE Limited Warranty Periods Item Warranty Period New machine materials and workmanship 2 year parts replacement Structural components (Chassis, Turntable, Booms, Scissors) 5 years parts replacement or repair Parts held in a Distributor’s stock 12 months from date of invoice, subject to adequate storage/protection Parts sold (non warranty) 6 months from date of invoice Batteries supplied on new machines 6 months from warranty registration date Other specifically excluded parts: Fuel injectors Motor brushes Glow plugs Contactor tips and springs Oils Filters Lamp bulbs Lamp lenses Coolants Lubricants Cleaning materials All consumable/wear parts Snorkel Warranty Statement Not covered by Warranty Effective 1/1/2017 Local Distributor / Lokaler Vertiebshändler / Distributeur local El Distribuidor local / ll Distributore locale EUROPE, MIDDLE EAST AFRICA & ASIA PHONE: +44 (0) 845 1550 058 FAX: +44 (0) 845 1557 756 NORTH & SOUTH AMERICA PHONE: +1 785 989 3000 TOLL FREE: +1 800 255 0317 FAX: +1 785 989 3070 AUSTRALIA PHONE: +61 1300 700 450 FAX: +61 2 9609 3057 NEW ZEALAND PHONE: +64 6 3689 168 FAX: +64 6 3689 164 ">

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