Manitowoc NTC55 Operator's Manual
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Manitowoc NTC55 Operator's Manual

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National Crane NTC55
Operator Manual

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  • Page 1 National Crane NTC55 Operator Manual...
  • Page 3 OPERATOR MANUAL This manual has been prepared for and is considered part of the NTC55 Cranes This Manual is divided into the following sections: SECTION 1 INTRODUCTION SECTION 2 SAFETY PRECAUTIONS SECTION 3 CONTROLS AND OPERATING PROCEDURES SECTION 4 SET-UP...
  • Page 4 WARNING California Proposition 65 Breathing diesel engine exhaust exposes you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. • Always start and operate the engine in a well- ventilated area. •...

  • Page 5: Table Of Contents

    NTC55 OPERATOR MANUAL TABLE OF CONTENTS SECTION 1 ..........Introduction General .
  • Page 6 TABLE OF CONTENTS OPERATOR MANUAL NTC55 Lifting ............2-34 Hand Signals .
  • Page 7 NTC55 OPERATOR MANUAL TABLE OF CONTENTS Work Light Switch ..........3-15 Skylight Wiper Switch .
  • Page 8 TABLE OF CONTENTS OPERATOR MANUAL NTC55 Setting the Outriggers ..........4-2 Jib Safety Information.
  • Page 9 NTC55 OPERATOR MANUAL TABLE OF CONTENTS SECTION 6 ........Maintenance Checklist Crane Inspection And Maintenance.
  • Page 10 Diagnostic............7-19 About the Manitowoc Diagnostic Code Application ......7-21...

  • Page 11: Section 1

    If you are the new owner of a National crane, please register local regulations, safety codes or insurance requirements. it with Manitowoc Crane Care so we have the ability to contact you if the need arises. The NTC55 has been designed for maximum performance with minimum maintenance.
  • Page 12 INTRODUCTION OPERATOR MANUAL NTC55 8800-1 FIGURE 1-1 Published 9-26-2018 Control # 646-02...
  • Page 13 NTC55 OPERATOR MANUAL INTRODUCTION FIGURE 1-2 7449-1 7449-2 7765 Item Component Cab Crane Controls (Inside Cab) RCL, Display Screen (Inside Cab) Rated Capacity Limiter (RCL) Reel 7450 Boom Boom Nose Item Component Boom Rest Ground Outrigger Control Lift Cylinder Hydraulic Pump...
  • Page 14 Care. The crane must not be returned to service until it is thoroughly inspected for any evidence of damage. All damaged parts must be repaired or replaced as authorized by your local National Crane distributor or Manitowoc Crane Care. Published 9-26-2018 Control # 646-02...

  • Page 15: Safety Messages

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS SECTION 2 SAFETY PRECAUTIONS Environmental Protection....2-27 Safety Messages......2-1 General .

  • Page 16: General

    Should the distributor not be immediately available, contact should be made directly with Manitowoc Product Safety at the address below. The crane must not be returned to service until it is thoroughly inspected for any evidence of damage.

  • Page 17: Operator Qualifications

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS No personnel shall be allowed to climb onto the crane or Refer to the Parts Manual for this crane for the locations of all enter the crane cab or operator’s station unless performance safety decals.

  • Page 18: Operational Aids

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL As operator of this crane, you are granted the authority to supported personnel platforms. Personnel shall not be stop and refuse to lift loads until safety is assured. lifted when anti-two-block devices are not functioning properly.

  • Page 19: Working Area Limiter (If Equipped)

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS b o o m e x t e n s i o n n o s e r e s p e c t i v e l y. A n o p e r a t o r, block conditions.

  • Page 20: Load Charts

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Use adequate cribbing under outrigger floats to distribute weight over a greater area. Check frequently for settling. Read and follow the following safety decal for cranes with center front stabilizers. KEEP THE BOOM SHORT. Swinging loads with a long line can create an unstable condition and possible structural failure of the boom.

  • Page 21: Wind Speeds

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS provided to assist in determining safe operation in windy decreased backward stability, wind on the side of the boom conditions. can result in structural damages, etc.) Always use extreme caution when windy conditions exist. Wind forces can exert extreme dynamic loads. National NEVER exceed the rated capacity shown on the Load Chart.
  • Page 22 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL NOTE: This condition is limited to operation with the main In both cases a) and b) above, the lift may also be limited by boom on fully extended outriggers only. the projected wind area of the load Ap and by the wind drag coefficient Cd: This limit can be determined by comparing c) If V(z) is >...
  • Page 23 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Simplified Method to Determine Maximum Permissible Wind Speed Determine 3-Second Gust 0.14 V(z) = [(z/10) + 0.4]v [m/s] Wind Speed at boom tip, 0.14 V(z) = [(z/33) + 0.4]v [mph] V(z) 13.4 m/s < V(z) < 20.1 m/s V(z) >...
  • Page 24 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Determination of 3-second wind gust speed at boom Size and Shape of the load: tip height: These rated capacities are also based on the assumption that the Wind Resistance Area of load, Awr is not more...
  • Page 25 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Calculation of Projected Wind Area (Ap) Wind Wind = 8 m = 24 m 25 ft 25 ft Wind Wind 10 ft 3 ft = 75 ft = 250 ft 10 ft 3 ft 8384-1...
  • Page 26 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Table 2-2 Wind Drag Coefficient Maximum Permissible Wind Speed If the wind resistant area of the load Awr is greater than (load) Shape the allowable wind resistant area Awr , the ratio can be (allow) used to determine a permissible wind speed V(z) for the load 1.1 to 2.0...
  • Page 27 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Rated Load Chart Example - Metric 8383-1 FIGURE 2-3 NATIONAL CRANE 2-13 Published 9-26-2018 Control # 646-02...
  • Page 28 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Table 2-4 Example-Capacity Reduction Factors for Wind Speed V(z) Greater than 13.4 m/s - Metric (Only for lifting with main boom on fully extended outriggers, with or without stowed extension) For wind speed V(z) (3-second gust speed at boom tip height) V(z) > 13.4 m/s ≤ 20.1 m/s, the Reduced Capacity...
  • Page 29 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS At wind speeds greater than 13.4 m/s, it is not permissible to Load example 1.3a: lift a load greater than 12,040 kg, even if the wind resistance With large wind resistance area of the load Awr (load) area of the load is less than 14.45 m...
  • Page 30 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL • Is the load to be lifted less than allowable load? Ratio = 1.37 8,000 kg ≤ 12,040 kg • Is Awr less than Awr (load) (allow) From Table 2-5, the maximum permissible wind speed at 19.83 m...
  • Page 31 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Rated Load Chart Example - Non-metric 8382-1 FIGURE 2-4 NATIONAL CRANE 2-17 Published 9-26-2018 Control # 646-02...
  • Page 32 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Table 2-6 Example-Capacity Reduction Factors for Wind Speed V(z) Greater than 30 mph - Non-metric (Only for lifting with main boom on fully extended outriggers, with or without stowed extension) For wind speed Vz (3-second gust speed at boom tip height) is greater > 30> mph ≤ 45 mph, the Reduced Capacity...
  • Page 33 NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS • Is Awr less than Awr (load) (allow) 108 ft ≤ 119 ft L i f t i n g L i m i t s a t w i n d s p e e d V ( z ) > 3 0 m p h Conclusion: This load is permissible to lift in wind speed up and ≤...

  • Page 34: Lifting Operations

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Refer to the above Lifting Limits at wind speed V(z) injury could result from the crane tipping over or failing > 30 mph and ≤ 45 mph. Comparing the load and wind structurally from overload.

  • Page 35: Counterweight

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Counterweight • Maintain communication between all parties throughout the entire operation. If possible, provide approved radio On cranes equipped with removable counterweights, ensure equipment for voice communication between all parties the appropriate counterweight sections are properly installed engaged in the lift.

  • Page 36: Pile Driving And Extracting

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL • The panel shall be lifted so that the hoist lines are in line • The pile driver and piling shall be suspended from a with the crane. hoist cable with sufficient line speed to meet or exceed the rate of descent of the driver and piling to preclude •...

  • Page 37: Electrocution Hazard

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS ELECTROCUTION HAZARD 29CFR1926.1408 and ASME B30.5 American National Standard. Thoroughly read, understand, and abide by all applicable federal, state, and local regulations regarding operation of cranes near electric power lines or equipment. United States federal law prohibits the use of...

  • Page 38: Set-Up And Operation

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL The rules in this Operator Manual must be followed at all or load moves near a power source. This person shall have times, even if the electrical power lines or equipment have no other duties while the crane is working.

  • Page 39: Electrical Contact

    Should the distributor not be immediately • If a thunder storm is forecast available, contact Manitowoc Crane Care. The crane must not be returned to service until it is thoroughly inspected for Use electrically conducting material for grounding.

  • Page 40: Personnel Handling

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Connect the free end of the cable with a clamp (1) to a General requirements. The use of a crane or der- rick to hoist employees on a personnel platform is good electrically conductive location on the frame.

  • Page 41: Environmental Protection

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS The platform is properly attached and secured to the • Always drain waste fluids into leak proof containers that load hook. are clearly marked with what they contain. • For boom mounted platforms: • Always fill or add fluids with a funnel or a filling pump.

  • Page 42: Lubrication

    Do not attempt to repair or tighten any hydraulic hose or • Consult with Manitowoc Crane Care to determine if load fitting while the engine is running, or when the hydraulic testing is required after a structural repair is performed.

  • Page 43: Tires

    K100™ Synthetic Crane Hoist Line Manual P/N • Core deterioration, usually observed as a rapid 9828100734 available by contacting Manitowoc Crane Care. reduction in rope diameter, is cause for immediate removal of the rope. During installation and setup, care must be taken to avoid overlap and crossing of wire rope and synthetic hoist ropes.

  • Page 44: Sheaves

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL • Never “shock load” a rope. A sudden application of force Evidence of abuse or contact with another object. or load can cause both visible external and internal Heat damage. damage. There is no practical way to estimate the force applied by shock loading a rope.

  • Page 45: Batteries

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Engine Ensure sheaves carrying ropes that can be momentarily unloaded are equipped with close fitting guards or other Fuel the crane only with the engine turned off. Do not smoke devices to guide the rope back into the groove when the load while fueling the crane.

  • Page 46: Travel Operation

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL exercised anytime any crane function is being performed Watch clearances when traveling. Do not take a chance of while the cable is hooked into the hookblock tie down. running into overhead or side obstructions. When moving in tight quarters, post a signal person to help TRAVEL OPERATION guard against collisions or bumping structures.

  • Page 47: Work Practices

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS WORK PRACTICES or walking/working surfaces could cause a slipping accident. A shoe that is not clean might slip off a control pedal during Personal Considerations operation. Do not allow ground personnel to store their personal...

  • Page 48: Lifting

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL Sparks from the crane’s electrical system and/or engine exhaust can cause an explosion. Do not operate this crane in an area with flammable dust or vapors, unless good ventilation has removed the hazard. Carbon monoxide fumes from the engine exhaust can cause suffocation in an enclosed area.

  • Page 49: Hand Signals

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Check the hoist brake by raising the load a few inches, If the boom should contact an object, stop immediately and stopping the hoist and holding the load. Be sure the hoist inspect the boom. Remove the crane from service if the brake is working correctly before continuing the lift.
  • Page 50 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL 8496-1 FIGURE 2-6 2-36 Published 9-26-2018 Control # 646-02...

  • Page 51: Boom Extension

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS BOOM EXTENSION that certain jobsite conditions may not permit the boom and boom extension of a crane to be fully lowered to the ground. To avoid death or serious injury, follow the procedures in this...

  • Page 52: Temperature Effects On Hook Blocks

    SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL If applicable to your crane, frequently check all air tanks for would retract approximately 196 mm (7 3/4 in) [see Table 2- water in freezing weather. 8]. A cylinder extended 1.5 m (5 ft) in which the oil cools 15.5°C (60°F) would only retract approximately 38 mm (1 1/...

  • Page 53: Model Specific Information

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Table 2-8: Boom Drift Chart (Cylinder length change in inches) Coeff. = 0.00043 (in / °F) STROKE Temperature Change (°F) (FT.) 0.26 0.52 0.77 1.03 1.29 1.55 1.81 2.06 2.32 2.58 0.52 1.03 1.55 2.06 2.58...
  • Page 54 To avoid an accident caused by overload damage to your crane: • Perform the inspections outlined in this publication for overloads up to 50%. • Stop operating the crane and contact Manitowoc Crane Care immediately for overloads of 50% and higher. 2-40 Published 9-26-2018 Control # 646-02...

  • Page 55: Boom Inspection

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Boom Inspection 8670-2 9, 10 2, 3 9, 10 Illustration for reference only. Your crane may be different. 8238-1 NATIONAL CRANE 2-41 Published 9-26-2018 Control # 646-02...
  • Page 56 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL NOTE: The following checklist includes all features that can be found on National cranes. Your crane may not have some features. Overload less than 25% Sheaves, Inspect all for damage. Rope Guides Collar-Wear Pads, Pad Inspect for damage.

  • Page 57: Superstructure Inspection

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Superstructure Inspection 10,9 7920-1 Illustration for reference only. 8238-1 Your crane may be different. NATIONAL CRANE 2-43 Published 9-26-2018 Control # 646-02...
  • Page 58 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL NOTE: The following checklist includes all features that can be found on National cranes. Your crane may not have some features. Overload less than 25% Lift Cylinder Inspect for leaks. See topic in Introduction section Wire Rope Inspect all for damage.

  • Page 59: Carrier Inspection

    NTC55 OPERATOR MANUAL SAFETY PRECAUTIONS Carrier Inspection Carrier Frame 8283-3 5, 6 Illustration for reference only. Your crane may be different. 8238-1 NATIONAL CRANE 2-45 Published 9-26-2018 Control # 646-02...
  • Page 60 SAFETY PRECAUTIONS NTC55 OPERATOR MANUAL NOTE: The following checklist includes all features that can be found on National cranes. Your crane may not have some features. Overload less than 25% Stabilizer Inspect for leaks. Cylinders Outrigger Inspect for deformation and cracked welds.

  • Page 61: Section 3

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES SECTION 3 CONTROLS AND OPERATING PROCEDURES SECTIONS CONTENTS General ........3-2 Windshield Wiper/Washer Switch .

  • Page 62: General

    Crane Software Overview • PTO must be engaged The NTC55 is equipped with a CAN bus electronic system If unable to activate the crane cab key switch, first check the that controls the majority of the devices on the crane. This is...

  • Page 63: Jump Starting The Crane

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES • Ignition State = 2 (Crane ignition switch active) To transition between Ignition State = 0 to Ignition State = 2, CAUTION the crane cab key switch should be turned to the ignition It is strongly recommended that the batteries not be position.

  • Page 64: Park Brake

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Air Shift Control sloped, you may be required to help immobilize the truck with wheel chocks. The PTO is engaged when the switch is moved to apply air to PTO and disengaged when switch is in off position. The truck...
  • Page 65 NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES 7459-16 7448-1 8798-4 8798-5 FIGURE 3-1 National Crane Published 9-26-2018 Control # 646-02...

  • Page 66: Cab Outrigger Control Panel

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Item Description Item Description Outrigger Midspan Selector Pin Ground Station Outrigger Controls Outrigger Beam Assy Long Outrigger Extend/Retract Cylinder Outrigger Beam Assy Short Console Panel Level Indicator Emergency Stop Switch Outrigger Jack Cylinder...

  • Page 67: Cab Outrigger Control

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Cab Outrigger Control 8232-5 Item Description Outrigger Beam Selector Button Outrigger Jack Selector Button Extend Button Retract Button Single Front Outrigger (SFO) Switch (if equipped) Enable Button 8798-4 Module Power Indicator Console Panel...

  • Page 68: Outrigger Selector Valve

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Pre-selection of a button or a combination of buttons (one or • The panel on the right side operates the outrigger more beams or one or more jacks) may be selected within 5 beams for right side only.
  • Page 69 NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Outrigger Control Panel hydraulic fluid to flow through the control solenoid valve and the individual solenoid valve and move the selected compo- There is one outrigger control panel on each side of the nent in the desired direction.
  • Page 70 CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 7459-4 Item Description Outrigger Beam Selector Switch Extend/Retract Switch Single Front Outrigger (SFO) Switch Jack Selector Switch Emergency Stop Switch Level Indicator FIGURE 3-3 3-10 Published 9-26-2018 Control # 646-02...

  • Page 71: Crane Controls

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES CRANE CONTROLS 8798-2 8798-1 FIGURE 3-4 Item Description Item Description Outrigger Control Panel Diagnostic Connector Swing Brake Pedal Crane Level Indicator Boom Telescope Pedal (Optional) Truck Engine Hi/Low Switch Foot Throttle Pedal Crane Function Power Switch...
  • Page 72 CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Item Description Item Description Ignition Switch A/C Heater Fan Speed Receptacle (12v) 7459-7 7459-22 7459-23 FIGURE 3-5 Item Description Item Description Main Hoist Speed Switch-HI/OFF/LOW Dual Axis Controller- Boom Lift/Main Hoist Auxiliary Hoist Speed Switch-HI/OFF/LOW...

  • Page 73: Swing Brake Pedal

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES position and prevent accidental movement of the cab & Item Description superstructure. Single Axis Controller- Main Hoist Lever Single Axis Controller-Boom Telescope/ Auxiliary Hoist Lever Single Axis Controller-Swing Control Lever Seat (only) Slide Adjustment Lever...

  • Page 74: Rcl Bypass Switch

    RCL controls. Releasing the key allows the connector) and the appropriate electrical system software RCL controls to re-engage. are required. Contact Manitowoc Crane Care to obtain the appropriate diagnostic cable. The RCL bypass switch (6, Figure 3-4) located behind the...

  • Page 75: Work Light Switch

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Work Light Switch The lever controls the swing and telescope functions when the crane is not equipped with an auxiliary hoist. When The work light switch (18, Figure 3-4) is a two position rocker equipped with an auxiliary hoist, the lever controls swing and switch, ON and OFF, located on the right overhead console.

  • Page 76: Hoist Rotation Indicators (Hri)

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Hoist Rotation Indicators (HRI) Push the telescope lever (37) forward to extend the boom, pull the lever back to retract the boom. If equipped with an The Hoist Rotation Indicators for the auxiliary and main hoist auxiliary hoist, this lever (37) operates the auxiliary hoist is located on top of each hoist control lever.

  • Page 77: Heater Cold Weather Fuel Mixture

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES FIGURE 3-8 7459-21 7770 FIGURE 3-10 WARNING Explosion Hazard! Do not mix gasoline with diesel fuel. Death or serious OPERATING PROCEDURES injury can occur due to explosion. You need to be familiar with the safety precautions outlined...

  • Page 78: Equipment Checks

    Hoist Cable Inspection And Maintenance, page Lubrication section of your crane’s Operator Manual, by 6-3. contacting your local National Crane distributor, or by contacting Manitowoc Crane Care directly). 3-18 Published 9-26-2018 Control # 646-02...

  • Page 79: Engine

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Swing Drive and Turntable Bearing Warm-up Procedures for Temperatures Above -7°C CAUTION (20°F): Crane Damage Hazard! Setup the crane on fully extended outriggers, with the Operating the crane with the incorrect lubricants and...

  • Page 80: Anti-Two Block Check

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Anti-two Block Check HOIST SYSTEM OPERATION The Hoist may have lifting capabilities greater than that of the crane limits. Therefore, care must be taken to ensure that the DANGER load lifted is within the crane rating. General rules for hoist...

  • Page 81: Stowing And Parking

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Stowing and Parking Unattended Crane WARNING WARNING Tipping Hazard! Tipping Hazard! Never park the crane near holes, or on rocky or extremely Changing weather conditions including but not limited to: soft surfaces. This may cause the crane to overturn.

  • Page 82: Lifting The Load

    Position the crane in the work area and set the extended), one outrigger span when lifting “over-rear”, and outriggers. See Outrigger Setup, page 4-1. two counterweight configurations for the NTC55 and three counterweight configurations for the NTC55. Each part Program the RCL. Use the load chart to estimate the contains the load chart, range diagram, and hoist data sheet.
  • Page 83 NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES be removed and stowed securely before traveling. If the hook block or headache ball remains reeved on the CAUTION boom, it must be secured at the tie down on the carrier provided for that purpose.
  • Page 84 CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 There needs to be slack Wedge socket with in the anti-two-block chain bracket to support the in preparation for road anti-two-block weight. travel. See page 4-12 for proper rigging of the anti-two-block weight.
  • Page 85 NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES FIGURE 3-13 National Crane 3-25 Published 9-26-2018 Control # 646-02...
  • Page 86 CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 FIGURE 3-14 3-26 Published 9-26-2018 Control # 646-02...

  • Page 87: Standard Remote Control

    When the standard Remote Control (1) is in the stowed position as shown in Figure 3-15 the remote control power The National Crane model NTC55 is equipped with a cord (3, Figure 3-15) should be plugged into the remote standard hand held radio remote control. An optional remote...

  • Page 88: Operation

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 Operation Item Description Main Hoist Up Auxiliary Hoist Up Single Front Outrigger Retract Blank Frequency Change Stop/Off The remote control (Figure 3-17) operates only when the crane is running and the “Crane Power” switch is turned OFF, the boom length is less than 10ft extended, and the boom angle is less than 10 degrees.

  • Page 89: Crane Remote Control (Optional)

    NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES CRANE REMOTE CONTROL (OPTIONAL) 7648 FIGURE 3-18 The optional Crane Remote Control (Figure 3-18) will allow Item Description full remote control of the crane. The standard Remote Main Hoist High Speed Control is disabled when using the optional Crane Remote Control.

  • Page 90: Crane Remote Control Activation

    CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 The LCD Screen (27, Figure 3-18 and Figure 3-19) on the When finished with the remote, press the red STOP button display is used to communicate signal strength, battery level, (10). This will shut off the machine. If the remote is left turned wireless channel, remote status, and the configuration of the ON for more than 60 minutes, the remote will shut itself off.
  • Page 91 NTC55 OPERATOR MANUAL CONTROLS AND OPERATING PROCEDURES Use of rechargeable batteries or standard AA batteries is acceptable; however, the batteries can not be charged in the DANGER remote itself. Be sure to turn off the remote by pressing the red stop...
  • Page 92 CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NTC55 This Page Blank 3-32 Published 9-26-2018 Control # 646-02...

  • Page 93: Section 4

    NTC55 OPERATOR MANUAL SET-UP SECTION 4 SET-UP SECTION CONTENTS Outrigger Setup ......4-1 Setting the Offset ......4-9 Proper Leveling of the Crane .

  • Page 94: Site Selection

    SET-UP OPERATOR MANUAL NTC55 Place a miracle pointer level, carpenter level, or similar type device on a machined surface such as the turntable bearing or bearing mounting surfaces. Using the outriggers, level the crane as indicated on the leveling device used in step 3.

  • Page 95: Jib Safety Information

    NTC55 OPERATOR MANUAL SET-UP NOTE: The RCL will automatically preselect the outrigger Operate with jib by boom angle when main boom is not position based on inputs from the four outrigger fully extended. Do not exceed rated jib capacities at any beam extension monitoring sensors.

  • Page 96: Erecting And Stowing The Jib

    SET-UP OPERATOR MANUAL NTC55 ERECTING AND STOWING THE JIB JIB OPERATION General Warnings Deployment Procedure Using boom telescope function, fully retract boom. Using lift function, lower boom so that attachment pins (6 and 7, Figure 4-3) are easily accessible from the ground.
  • Page 97 NTC55 OPERATOR MANUAL SET-UP b. Extend the alignment jack (10, Figure 4-3) so that the lower left pin holes (7, Figure 4-3) are aligned. Install the lower left side attachment pin (7, Figure 4-3) and spring clip. d. Open the jack release valve and retract the jack (10, Figure 4-3).
  • Page 98 SET-UP OPERATOR MANUAL NTC55 Stow Pin Jib Stowage Bracket Hook Bracket Boom Jib Swing Pin Right Side Attachment Pins Left Side Attachment Pins Jib Retaining Pin Alignment Jack FIGURE 4-3 Published 9-26-2018 Control # 646-02...

  • Page 99: Stowing Procedure

    NTC55 OPERATOR MANUAL SET-UP FIGURE 4-4 NOTE: The hoist cable must be routed over the mast Item Description assembly and under the roller on the mast for all Boom Base Section configurations. Tele 1 Stowing Procedure Tele 2 NOTE: Depending on the length of the jib being used; the...
  • Page 100 SET-UP OPERATOR MANUAL NTC55 attachment pins (6) will be used as a pivot point to swing jib into stowed position. A slight hammer strike may be necessary to remove pins. DANGER Visually check all pin positions and make sure the jib is...

  • Page 101: Jib Removal

    NTC55 OPERATOR MANUAL SET-UP JIB REMOVAL Setting the Offset NOTE: The hoist cable must be routed over the mast assembly and under the roller on the mast for all CAUTION configurations. The mast assembly (10, Figure 4-4) must be positioned...
  • Page 102 SET-UP OPERATOR MANUAL NTC55 Extend and set the outriggers. Swing the boom over rear of truck chassis. CAUTION Use caution to avoid pinch points while positioning mast. CAUTION Install pin (3) that was removed from the stowage Do not overload the swingaway or the attachment points bracket (4) to secure the mast to the jib boom.
  • Page 103 NTC55 OPERATOR MANUAL SET-UP Mast Jib Boom Mast Stowage Bracket Retaining Clip 8277 FIGURE 4-5 NATIONAL CRANE 4-11 Published 9-26-2018 Control # 646-02...

  • Page 104: Anti-Two-Block Weight Installation

    Lifting the Rated Load The anti-two-block chain must be installed The NTC55 is rated to lift a 110,000 lb (55 tons) [45,895 kg between the slot in the (49.9 metric ton)] at an 8 ft radius with all booms retracted weight and the hoist with a 10 part block.

  • Page 105: Installing Cable On The Hoist

    The hook block must be sized to the number of line parts. For example, do not use a six part line hook block on a three part line reeving. Contact your National Crane Distributor or Manitowoc Crane Care to order the proper hook block.

  • Page 106: Wedge Sockets

    SET-UP OPERATOR MANUAL NTC55 Terminator Wedge Installation The NTC55 is shipped with a terminator wedge socket which is National Crane’s preferred type of socket (Figure 4-8). Other wedge socket types are discussed under Wedge Socket Installation, page 4-15. To attach a terminator wedge (Figure 4-8), use the following...

  • Page 107: Wedge Socket Installation

    NTC55 OPERATOR MANUAL SET-UP Wedge Socket Installation using the crane’s hoist to first apply a light load to the live-end. Inspect the wedge and socket. Remove any rough After final pin connections are made, increase the loads edges and burrs.
  • Page 108 SET-UP OPERATOR MANUAL NTC55 Table 4-1 Wire Rope Clip Torque Values Clip Sizes Torque Inches lb-ft 3.18 3/16 4.76 6.35 5/16 7.94 13.28 7/16 11.11 12.70 9/16 14.29 15.88 19.05 22.23 25.40 1-1/8 28.58 1-1/4 31.75 1-3/8 38.68 1-1/2 38.10...

  • Page 109: Removable Counterweight

    Ensure that all mounting pins are properly installed and locked, during, and after operating the counterweight removal system. The NTC55 is equipped with a three section Removable Counterweight. The cast section weighs 3000 lb (1360 kg) 7623-20 and two sections each weighing 1250 lb (466 kg). The...
  • Page 110 SET-UP OPERATOR MANUAL NTC55 8801 Cast Section - Top Cast Section - Bottom Removal Cylinders Superstructure Attachment Pin Cylinder Attachment Pin Section Attachment Pin Carrier Deck Attachment Pin Switch Panel FIGURE 4-12 Using Counterweight Switch Panel (Figure 4-13) located If a Counterweight Removal Cylinder Raise or...

  • Page 111: Stowing The Counterweight

    NTC55 OPERATOR MANUAL SET-UP Release the left and right Counterweight Removal Cylinder Lower Buttons when cylinders are at the proper position to pin the counterweight to the cylinders. If cylinders and counterweight do not vertically align, return to cab and swing superstructure until alignment is achieved.
  • Page 112 SET-UP OPERATOR MANUAL NTC55 above the counterweight stowage area on the carrier Remove pins (4, Figure 4-12) that secure Removable deck. Counterweight to superstructure. E n s u r e v e r t i c a l a l i g n m e n t o f c o u n t e r w e i g h t t o...

  • Page 113: General

    Specific recommendations of brand and grade of lubricants extreme condition lubrication, contact your local National are not made here due to regional availability, operating Crane Distributor or Manitowoc Crane Care. conditions, and the continual development of improved Environmental Protection products. Where questions arise, contact your National Crane Distributor or Manitowoc Crane Care.

  • Page 114: Chassis Grease

    This is a special high-graphite adhesive lubricant that helps suitability of a specific fluid, check with your authorized to eliminate fretting corrosion, is water resistant, and forms a National Crane distributor or Manitowoc Crane Care. dry lubrication film which does not attract dust. Lubricant NOTE: All fluids and lubricants may be purchased by meets NLGI Class 1-2 specifications.

  • Page 115: Arctic Hydraulic Oil

    Petroleum based fluids developed especially for low level and must meet John Deere Standard JDM J20C. temperature service may be used with satisfactory results. Contact your National Crane distributor or Manitowoc Crane However, certain fluids, such as halogenated hydrocarbons, Care if you have any questions.
  • Page 116 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 National Lube Specification Symbol Description Cold Weather Standard -40°C (-40°F) Antifreeze/Coolant (for Cab Heater) 6829101130 6829104212 EP-MPG Extreme Pressure Multipurpose Grease 6829003477 6829104275 GL-5 GL-5 Gear Lubricant 6829012964 6829014058 HYDO Hydraulic Oil 6829006444...
  • Page 117 NTC55 OPERATOR MANUAL LUBRICATION PROCEDURE AND CHARTS Lubrication Points 8810-2 Tilt Cab 7765a 8802 7462-18 10a, 10b 11, 12 7449-1 FIGURE 5-1 NATIONAL CRANE Published 9-26-2018 Control # 646-02...
  • Page 118 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 Recommended Item Application Procedure Frequency Lubricant Weekly, As Required, Semi- Hydraulic oil tank reservoir HYDO Check, fill, change Annually After first 40 Hrs, Quarterly Hydraulic tank Oil filter Change or clean thereafter. After first 40 Hrs, Quarterly...

  • Page 119: Internal Cable Sheave Lubrication

    A 0.25 in (6.35 mm) diameter nozzle grease gun tip (National P/N 955045). • Contact Manitowoc Crane Care to obtain this tip. Lubrication of the extend and retract sheaves is as follows: Locate the fittings as listed in the table above.

  • Page 120: Hoist Gearbox Oil

    (1) to assist in adding oil. temperatures from -23° C to 82° C (-10° F to +180° F). For Remove fill/level plug with a hex socket and fill gear box operation outside this range, contact Manitowoc Crane Care for recommendations. Published 9-26-2018 Control # 646-02...

  • Page 121: Hydraulic Oil Reservoir Level

    It is recommended that all exposed cylinder rods be ® protected using Boeshield T-9 Premium Metal Protectant. Manitowoc Crane Care has Boeshield T-9 Premium Metal Hydraulic Oil Reservoir Level Protectant available in 12 oz. cans that can be ordered through the Parts Department.
  • Page 122 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 • have a high film strength. • swabbing • resistant to oxidation. • painting Before applying lubrication, accumulations of dirt or other • pressure spray abrasive material should be removed from the rope. Clean...

  • Page 123: Carwell® Rust Inhibitor

    This To help protect against corrosion of National cranes, red tint will turn clear on its own within approximately 24 Manitowoc Crane Care recommends washing the crane at hours after application. least monthly to remove all foreign matter. More frequent Once applied, treatment can appear to leave a slightly “oily”...

  • Page 124: Inspection And Repair

    Use of original paint colors is recommended necessary. to ensure the best color match possible. Please contact Manitowoc Crane Care should you have any For scratches and marks in areas of low visibility: questions. 5-12...

  • Page 125: Areas Of Application

    LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 Areas of Application • Superstructure applications are; hose ends and fittings, wire rope on hoist roller tensioning springs on hoists, all Refer to Figure 5-8 unpainted fasteners and hardware, valves, slew ring fasteners and all bare metal surfaces.
  • Page 126 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 7650-79 7650-80 FIGURE 5-8 5-14 Published 9-26-2018 Control # 646-02...
  • Page 127 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 Item Description Item Description Headache Ball/Hook Block Tiedown Counterweight Pins Mirror Mounting Hardware Hoist Plumbing Connections Powertrain Hardware Tension Spring Outrigger Hose Connections Pivot Shaft Outrigger Pins, Clips Valve bank, Hose Connections inside turntable...
  • Page 128 LUBRICATION PROCEDURE AND CHARTS OPERATOR MANUAL NTC55 This Page Blank 5-16 Published 9-26-2018 Control # 646-02...

  • Page 129: Crane Inspection And Maintenance

    NTC55 OPERATOR MANUAL MAINTENANCE CHECKLIST SECTION 6 MAINTENANCE CHECKLIST SECTIONS CONTENTS Crane Inspection And Maintenance ... 6-1 Boom Extension Cable ..... 6-6 Inspections .

  • Page 130: Inspections

    MAINTENANCE CHECKLIST OPERATOR MANUAL NTC55 Loose parts or damage to structures or welds. Torque the T-box mounting bolts during the first month of operation and periodic inspections thereafter. Operation of lights, safety equipment and gauges. Torque the swing bearing mounting bolts during the first Condition of tires and suspension.

  • Page 131: Special Boom Inspection

    Drift from oil leaking by piston state and local regulatory agencies. d. Leaks at rod seals, welds, or holding valves. NOTE: Hoist rope may be purchased through Manitowoc Crane Care. PTO drive line system for proper alignment, lubrication and tightness.

  • Page 132: Precautions And Recommendations During Inspection

    MAINTENANCE CHECKLIST OPERATOR MANUAL NTC55 Precautions and Recommendations During • Pick-up Points: Sections of wire rope that are repeatedly stressed during each lift, such as those sections in Inspection contact with sheaves. • Always use safety glasses for eye protection.

  • Page 133: Wire Rope Replacement

    NTC55 OPERATOR MANUAL MAINTENANCE CHECKLIST the cable on the drum so that the wear is equalized along the .4 mm (0.0156 in) for rope diameters to 8 mm (0.313 total length of the cable. .8 mm (0.031) for rope diameters 9.5 mm (0.375 in) Wire Rope Replacement to 0.50 in (12.7 mm)

  • Page 134: Crane Adjustments And Repairs

    NOTE: When not in use, always leave the saddle and ram Manitowoc Crane Care. Extension cables are pre-stretched all the way down. and have special connections for proper operation. HYDRAULIC SYSTEM...

  • Page 135: Tire Load And Inflation Table

    NTC55 OPERATOR MANUAL MAINTENANCE CHECKLIST TIRE LOAD AND INFLATION TABLE NOTE: The values in the tables below are as published by the Tire and Rim Association 2005. Your vehicle Definite tire inflation pressures are established for each tire may be equipped with other tire sizes or the same size depending upon the load imposed on the tires.
  • Page 136 MAINTENANCE CHECKLIST OPERATOR MANUAL NTC55 Radial Ply Metric Tires for Trucks, Busses, and Trailers Used in Normal Highway Service Radial Ply Tires Mounted on 15° Drop Center Rims Tire and Rim Association Standard Radial Ply Metric Tires for Trucks, Busses, and Trailers Used in Normal Highway Service Radial Ply Tires Mounted on 15°...
  • Page 137 NTC55 OPERATOR MANUAL MAINTENANCE CHECKLIST Metric Wide Base Tires for Trucks, Busses, and Trailers Used in Normal Highway Service Tires Used as Singles Mounted on 15° Drop Center Rims Tire and Rim Association Standard Radial Ply Tires for Trucks, Busses, and Trailers Used in Normal Highway Service Radial Ply Tires Mounted on 15°...

  • Page 138: Specifications

    MAINTENANCE CHECKLIST OPERATOR MANUAL NTC55 SPECIFICATIONS Hydraulic Hydraulic Pump ..............286 l/min (75.5 gpm) 2200 rpm, Variable displacement, axial piston with load sense Pump Displacement ............130 cc/rev (7.93 in /rev) Pump Max Pressure............338 bar (4900 psi) Load Sense Relief Valve ..........332 bar (4663 psi) Pump Load Sense Margin..........

  • Page 139: Crane Operating Speeds

    Weight - Combined ..............2,494 kg (5,500 lb) General Capacity NTC55 ..............49.9 metric tons (55 tons) at 2.4 m (8 ft) radius Overall Length ............... 12.0 m (39.4 ft), with 31 m (128 ft) Boom Overall Width ................. 2.6 m (101.6 in) Overall Height................
  • Page 140 MAINTENANCE CHECKLIST OPERATOR MANUAL NTC55 This Page Blank 6-12 Published 9-26-2018 Control # 646-02...
  • Page 141 NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER SECTION 7 ATED APACITY IMITER SECTION CONTENTS RCL System Description ....7-2 Radius Limit ......7-13 RCL Display .

  • Page 142: Rcl System Description

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL FIGURE 7-1 8798-6 RCL SYSTEM DESCRIPTION charts loaded into the RCL module and are displayed on the screen as needed. When a load is picked, the RCL The Rated Capacity Limiter (RCL) is an operational aid that compares the actual conditions with the load chart.

  • Page 143: Rcl Display

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Main Menu RCL Setup Tools Diagnostics Return to Operating Mode Screen 8717-2 FIGURE 7-2 RCL Display Buttons 1-4 can be used to select/confirm a highlighted item, go back/escape, return to operating screen or go to a The Main Menu screen should display when: specific menu or function.

  • Page 144: Alert And Limit Symbols

    Hoist Up (Main and Auxiliary) NOTE: On start up of the RCL, the Manitowoc splash Boom Down screen and the National Crane logo screen will Telescope Out appear for a few seconds each before the Main Menu Screen appears (Figure 7-2).
  • Page 145 NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER • RCL WADS Limit - The work area definition (WADS) limit is measured as a straight line from point A DANGER to point B anywhere in the work area. This sets up a Use extreme caution when operating the crane with the virtual wall that alerts the operator of a user set limit.
  • Page 146 RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL FIGURE 7-4 Published 9-26-2018 Control # 646-02...

  • Page 147: Rcl Setup

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER RCL SETUP NOTE: Screens 3-3 and 4-2 do not apply to cranes equipped with a fixed or non-telescoping jib The RCL setup is where the lifting configuration of the crane extension and should not appear as a screen is entered into the system.

  • Page 148: Counterweight Configuration

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL Selected 3 on Screen 3-1A. Now select 1 or 2; is the Select either 1 or 2 (counterweights) or 3 (no counterweight). deployed jib retracted or extended? This screen is only for the NBT55 Counterweight Configuration.
  • Page 149 NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER user can override the setup using the arrow keys as displayed on Screen 6-2. 7521-10a Screen 6-2 8807-20 FIGURE 7-6 If any of the four Outrigger Length Monitoring Sensors are out of range or not functioning properly, that beam will show at midspan position and will be colored in red (Figure 7-7).

  • Page 150: Hoist & Reeving Configuration

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL Screen 6-4 and select OK if the configuration is correct. This verifies the lift configuration of the crane. 8807-19 If the confirmation Screen 9 is not correct, use the back a r r o w k e y t o g o b a c k t o S c r e e n 8 a n d c o r r e c t t h e configuration.

  • Page 151: Tare Function

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER • Boom Length (BL) = 102.0 ft - Real Time I/O - Pressing this button will • Boom Angle (BA) = 49.9° navigate to the Real Time I/O screen. • Load Radius (LR) = 93.4 ft - General Warning - See Diagnostic Screen •...

  • Page 152: Operational Limits

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL OPERATIONAL LIMITS Rotate the crane superstructure to the desired position (the number will appear on the display screen) then: Operational limits are set by the operator to limit crane Select the SET function key (1 or 3, Figure 7-2) to operation to a defined area.

  • Page 153: Boom Angle Limit

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Tip Height Limit Center Line of Truck with Boom RCL Limit #4 in Boom Rest 8807-32 +0° Move the crane boom to the desired boom tip height point (it will appear on the display screen) then select the following:...

  • Page 154: Delete All Limits

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL Delete All Limits Each selection on the Tools Screen is made by using the arrow keys to scroll and make the selection; select OK after RCL Limit #6 making the selection. 8807-34 Yellow indicates the currently set value.

  • Page 155: Rcl Sensor Calibration

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Select function key 2 Tools on the MAIN Menu screen and Joystick Output #2 the Tools Screen will appear. Select the Joystick Output Setup icon to display the Joystick Output Setup screen. Joystick Output Setup...

  • Page 156: Slew Sensor Calibration

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL Main Sensor Calibration Menu Slew Sensor Calibration 8807-41 8807-40 The sensors are displayed in the above Sensor Calibration Position the boom on the truck centerline in the boom rest Menu screen. and select OK from the Slew Sensor Calibration screen.

  • Page 157: Boom Angle Calibration

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Boom Angle Calibration Two calibration positions are shown one at a time starting with the fully retracted position on the Boom Length Select 2 on the Main Sensor Calibration Menu screen to start Calibration screen.

  • Page 158: Outrigger Span/Length

    RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL CWT Switch Panel Calibration Base Side Pressure Sensor Calibration 7769-56 If equipped, Select 8 from the Main Sensor Calibration Menu (page 7-16) to begin CWT panel calibration. CWT Panel Calibration 7769-60 Press OK to disconnect electrical cable (port LMI 2) to rod side transducer, per top paragraph on the screen and then follow the instructions as they appear on the screen.

  • Page 159: Diagnostic

    NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Upload Screen MAIN Menu 7623-41 Tools Diagnostics 8807-35 At the Upload Screen, Select OK, check mark to start the upload from the laptop. Select function key, Diagnostics. Once enabled, the display will return to the sensor calibration menu.
  • Page 160 RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL Truck Regeneration Needed - When the truck is in need of regeneration (first stage and all Truck Engine RPM subsequent stages), the general warning light is shown on the Truck Diesel Fuel Level - The...

  • Page 161: About The Manitowoc Diagnostic Code Application

    Apple stores and compatible with most Android and Apple active, use the up/down arrows to scroll through the mobile smart devices. codes. To look up a fault code with the Manitowoc Diagnostic Code application: Press the UP/Down button to highlight the Logged Fault Code Box.
  • Page 162 . F o r m or e i nf o r m at i on , se e The NBT - Boomtrucks screen appears. “Diagnostic” on page 7-19. Open the Manitowoc Diagnostics Code Application on your smart device. The Diagnostic Code Application splash screen appears.
  • Page 163 NTC55 OPERATOR MANUAL RATED CAPACITY LIMITER Press Continue. The Fault code information is displayed. 9565 Press OK to return to the main screen. National Crane 7-23 Published 9-26-2018 Control # 646-02...
  • Page 164 RATED CAPACITY LIMITER NTC55 OPERATOR MANUAL This Page Blank 7-24 Published 9-26-2018 Control # 646-02...
  • Page 165 Specifications............6-10 About the Manitowoc Diagnostic Code Application ......7-21 Accidents .
  • Page 166 OPERATOR MANUAL NTC55 Standard Remote Control..........3-27 Temperature Effects on Hook Blocks .

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