Table of Contents
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Please be sure to hand it over to the customer using.
The customer using should read it before use.
Hitachi Electric Chain Hoist
• This instruction manual explains the handling of Hitachi L-type Electric chain hoist in details so please
ensure to read over it until the end and use it correctly. Facility managers and workers who will use the
equipment should read this manual.
• This instruction manual describes the items specific to the L-type Electric chain hoist. The attached
"Electric chain hoist owner's manual" describes the general handling method of Electric chain hoists, so
read the manuals together and use them correctly.
• When the installation / operation / maintenance are inappropriate, the electric chain hoist cannot be used
smoothly, and may cause unexpected troubles and accidents.
• After reading, please carefully store all the manuals together and utilize these during maintenance and
inspection.
• Please note that we do not guarantee Electric chain hoists that are remodeled.
L - type (single speed)
LN - type (dual speed)
LS - type (single phase)
Service Manual
Original version
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Table of Contents
Related Manuals for Hitachi LS Series
Summarization of Contents
Safety Precautions
Warning Display Ranks Explained
Details DANGER, WARNING, and CAUTION ranks for hazard classification.
Prohibited and Instruction Symbols
Explains symbols indicating prohibited actions and required instructions.
Product Introduction and Guarantee
Confirming Product and Accessories
Check product arrival, condition, and presence of accessories like manuals.
Instruction Manual Content
Details that manual contents are subject to change without notice.
Product Guarantee Terms
Explains warranty period, conditions for free repair, and situations requiring charges.
Product Specifications
Standard and Rated Specifications
Details power supply, capacity, dimensions, environment, noise, duty factor, and start frequency.
Speed, Motor, and Weight Specifications
Lists hoisting speeds, motor insulation class, and approximate weight by capacity and function.
Component Identification Diagram
Illustrates and labels key components of the Hitachi Electric Chain Hoist.
Outer Dimensions and Measurements
Provides diagrams and a table detailing the outer dimensions (Z, A, B, C, D, etc.) in mm.
Mounting and Wiring Procedures
Precautions for Safe Mounting
Highlights extremely dangerous conditions and locations to avoid during mounting.
Power Source Connection and Grounding
Details power source connection, wiring, and essential grounding for safety.
Wiring Diagrams
L-Type (Single Speed) Wiring Diagram
Provides the detailed wiring diagram for the L-type (single speed) electric chain hoist.
LN-Type (Dual Speed) Wiring Diagram
Presents the comprehensive wiring diagram specific to the LN-type (dual speed) hoist.
LS-Type (Single Phase) Wiring Diagram
Details the electrical connection diagram for the LS-type (single phase) hoist.
Installation Steps
Attaching the Chain Container
Step-by-step instructions for securely attaching the chain container to the hoist body.
Installing Power and Push-Button Cables
Guides on connecting power and push-button cables, ensuring secure connections.
Cautions for Safe Operation
Operational Precautions and Trial Run
Advice on correct operation, trial run, avoiding reverse rotation, and duty factor limits.
Maintenance and Inspection - Core Tasks
Daily Inspection Procedures
Mandatory routine checks before each use to ensure safe and proper operation.
Pre-Operation Inspection Checks
Detailed checks for load operation, braking effectiveness, and unusual sounds or smells.
Maintenance and Inspection - Periodic
Periodic Voluntary Inspections
Guidelines for monthly and annual inspections by qualified personnel.
Maintenance and Inspection - Disassembly
Disassembly: Housing, Rotor, and Brake
Detailed steps for removing housing, rotor, and brake components.
Disassembly: Gear Components
Instructions for removing the gear case cover, transformer, and gear parts.
Disassembly: Upper Hook and Sprocket
Steps to remove the upper hook and sprocket assembly.
Disassembly: Lower Hook
Procedure for removing the lower hook, chain, and hanger pin.
Specific Maintenance Inspections
Chain Inspection and Maintenance
Guidance on applying lubricant and measuring chain wear, elongation, and diameter limits.
Electromagnetic Brake Inspection and Adjustment
Details inspection criteria for brake slip value, gap, and adjustment procedures.
Hook Inspection and Wear Limits
Checks for hook cracks, wear, opening size, and thickness to ensure integrity.
Gear Inspection and Wear Limits
Details gear wear criteria, measurement methods, and wear limits for pinions and gears.
Sprocket Inspection and Wear Limits
Methods for inspecting sprocket wear and judging usability based on dimensions.
Switch Inspection and Lubrication
Push-Button Switch Inspection
Checks for correct operation, damage, loose wires, and contact wear in the push-button switch.
Limit Switch Inspection and Margins
Inspects limit switch operation, levers, springs, and confirms hoist/lowering margins.
Lubrication Criteria and Oil Types
Specifies oiling locations, types of oil, application amounts, and frequency.
Part Lists and Bills of Material
Part List for Overload Prevention Unit
Lists parts for the overload prevention unit with part numbers and quantities.
Bill of Material for L-type
Detailed breakdown of components for the L-type electric chain hoist.
Bill of Material for LN-type
Detailed breakdown of components for the LN-type electric chain hoist.
Bill of Material for LS-type
Detailed breakdown of components for the LS-type electric chain hoist.
Part List for L/LN/LS Types
Consolidated part list for L, LN, and LS types across different capacities.
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