Table of Contents
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NITCHI-MATIC
ELECTRIC CHAIN HOIST
MODELS
• MH-5 • MHT-5 • MHC-5
TROLLEYS (MECHANICAL JOINING TYPE)
MODELS: M-ET-5, M-GT-5 AND M-PT-5
Operating Instructions Booklet
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Thoroughly read this operating instructions booklet before operating the
trolley and electric chain hoist.
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Carefully store this operating instructions booklet after reading it.
This operating instructions booklet contains important information that will be
necessary when inspecting and maintaining the trolley and electric chain hoist.
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The hoist operator must receive this operating instructions booklet!
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The hoist operator must read this operating instructions booklet!
Customer's notes:
Model
Serial No.
Date Purchased
N.B.
The above information will be required when purchasing spare parts and when making inquiries.
Copy them from the name plate on the hoist and save them for future reference.
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Table of Contents
Related Manuals for Nitchi MH-5
Summary of Contents for Nitchi MH-5
- Page 1 NITCHI-MATIC ELECTRIC CHAIN HOIST MODELS • MH-5 • MHT-5 • MHC-5 TROLLEYS (MECHANICAL JOINING TYPE) MODELS: M-ET-5, M-GT-5 AND M-PT-5 Operating Instructions Booklet Thoroughly read this operating instructions booklet before operating the trolley and electric chain hoist. Carefully store this operating instructions booklet after reading it.
- Page 2 NITCHI engineers under severe quality control. To assure absolute safety, dependability and satisfactory performance, rigid final inspections and tests in accordance with our own standards are carried out on the NITCHI products before they leave the plant.
- Page 3 ALWAYS Check the brake before use. ALWAYS Check the safety latches to see if they work properly. Broken and missing safety latches must be replaced immediately. ALWAYS Use genuine NITCHI parts and chains. NEVER Modify the hoist. NEVER Use modified or deformed hooks.
- Page 4 SAFETY PROCEDURES DURING OPERATION CAUTION ALWAYS Set the load properly in the hook. ALWAYS Confirm that the safety latch has closed completely. ALWAYS Take up the slack of the load chain and sling carefully, and make the initial load liftoff shock as small as possible. ALWAYS Use a hoist within the “...
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Page 5: Table Of Contents
3. CONDITIONS OF USE The MH-5 Series electric chain hoists and trolleys are designed for the vertically lifting, lowering and ho- rizontal transportation of loads by operating the pendant push button switch, and must be used within the following conditions: Power source : As specified on name plate of the electric chain hoist, and motorized trolley. -
Page 6: Standard Specifications
STANDARD SPECIFICATIONS Hook Suspended Type Electric Chain Hoist MH-5 0.5-3 ton MH-5 / 5 ton Diagrammatic only Diagrammatic only STANDARD SPECIFICATIONS: MH-5 Electric Chain Hoist Hoist Motor 3-phase Load chain Hoisting Speed Weight Minimum Rated Test (m/min) Lift headroom Output (kW) Item No. - Page 7 Electric Chain Hoist with Motorized Trolley EMT-MH-5 0.5 - 3 ton Diagrammatic only EMT-MH-5 5 ton Diagrammatic only Beam drawing Standard Specifications: EMT-MH-5 Electric Chain Hoist with Electric Trolley Hoist Motor Trolley motor Traversing 3-phase Load chain Speed (m/ 3-phase...
- Page 8 Electric Chain Hoists with Geared Trolley or Plain Trolley MHG-5 0.5-3 ton Diagrammatic only MHG-5 5 ton Diagrammatic only Beam drawing STANDARD SPECIFICATIONS : MHG-5 Electric Chain Hoist with Geared Trolley & MHP-5 Electric Chain Hoist with Plain Trolley Hoisting Speed (m/ Hoist Motor 3-phase Load Chain...
- Page 9 Hook Suspended Type 2-Speed Electric Chain Hoist MHT-05 0.5 - 2.5 ton MHT-5 / 5 ton Diagrammatic only Diagrammatic only STANDARD SPECIFICATIONS: MHT-5 2-Speed Electric Chain Hoist (Single-voltage) Hoisting Speed (m/min) Hoist Motor 3-phase Load Chain Minimum Fast Slow Output (kw) Rating (min) Weight Test...
- Page 10 Hook Suspended Type Single-Phase Electric Chain Hoist MHC-5 0.5-1 ton Diagrammatic only STANDARD SPECIFICATIONS: MHC-5 Electric Chain Hoist (Single-phase) Hoisting Speed Minimum Hoist Motor 1-phase Load Chain Rated Test Weight (m/min) Headroom Item No. Load Lift (m) Load Grade (Max.) G Output Rating Nos.
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Page 11: Installation
Chain bucket application table: Table 3 Lift (m) Load Chain Rated diameter x Model Load (t) nos. of fall MH-5 MHC-5 0.5 - 1 0 7.1 x 1 MHT-5 MH-5 2 - 3 0 11.2 x 1 MHT-5 MH-5 0 11.2 x 2 MHT-5 N.B. -
Page 12: Lubrication
See the table below for replacing or replenishing oil. Applicable Oil and Adequate Quantity Table 4 3. Be sure to apply oil to the load chain. MH-5. MHT-5 Type of hoist MH-5 MHT-5 Oil extractors (plug) Machine oil or gear oil is applicable. -
Page 13: Power Source Cabie
Cable length (m) Model Rated load (t) Hoist motor (kW) 50Hz / 60Hz (kW) 0.83 / 1.0 1.25 MAX. 109.9 m MH-5 1.17 / 1.4 1.25 MAX. 77.1 m 2 - 5 2.5 / 3.0 MAX. 57.3 m MAX. 103.2 m 0.83 / 1.0... -
Page 14: Adjusting The Trolley Width
ADJUSTING THE TROLLEY WIDTH Adjust the width between the trolley wheels as follows: 1. Remove the Hexagonal nuts, and remove the side-plate. 2. While referring to Table 7, move the appropriate numbers of Adjusting collars to the both sides of the Top holder. 3. -
Page 15: Setting The Trolley Onto The Beam
SETTING THE TROLLEY ONTO THE BEAM DANGER • The trolley must be installed onto the trolley beam only by qualified people with the neces- PROHIBITED sary knowledge. lnserting an assembled trolley from the end of the trolley beam: • Remove the Stoppers at the end of the trolley beam, and insert the trolley. •... -
Page 16: Connecting The Hoist To The Trolley
CONNECTING THE HOIST TO THE TROLLEY Connecting the electric chain hoist to a geared trolley (plain trolley): Geared trolley (Plain trolley) Electric chain hoist Split pin Insert the Split pin Connect the trolley to the electric into the hole of the chain hoist as shown in the drawing, Top hook pin. -
Page 17: Connecting The Power Source Cabie
CONNECTING THE POWER SOURCE CABLE DANGER • The hoist must be efficiently grounded, and an inde- pendent circuit breaker of the appropriate capacity PROHIBITED must be installed in the power source system. ELECTRIC HAZARD The power source systems of hoists connected to trolleys are as follows: lnstall a messenger wire ( 0 6 mm steel cable) parallel to the trolley beam. -
Page 18: Lnspection After Lnstallation
INSPECTION AFTER INSTALLATION Procedures to be carried out before the power source switch is turned "ON". 1. The load chain must always be free from twists. When the hoist lifts on two or more falls of load chain, twist can arise from the bottom hook being accidentally turned over through the load chain. 2. -
Page 19: Inspection & Maintenance
When inspecting the hoist, turn the power source “OFF” and hang out a sign that distinctly indicates that it is under inspection. lnspect the hoist while it is not under a load. Consult the authorized NITCHI dealer or distributor from where the hoist was purchased when repairs or MANDATORY replacement parts are required. -
Page 20: Inspection Points
INSPECTION POINTS MH-5 SERIES HOISTS Table 8 Section Check points Proper sondition External view No crack of deformation Abnormal sound Motor and other parts sound normal. Body Side-plates No wearing deformation Gears and bearings No wearing and crack. Well lubricated with oil. - Page 21 INSPECTION POINTS TROLLEYS (PLAIN/GEARED/MOTORIZED) Table 9 Section Side plates No bending, crack and ether deformations. Bolts, nuts, cotter-pins and snap-rings, ect. No looseness, breakage and missing. No excessive wear on tread and gear sections. Well Trolley wheels lubricated and rotating smoothly. All trolleys Bearings Properly engaged with shafts and rotating smoothly.
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Page 22: Hook & Chain Lnspection
Rated load Normal Normal Normal Limit Normal Limit 0.5t 21.9 29.5 25.7 MH-5 MHT-5 33.3 33.3 MHC-5 2.5t - 3t 39.9 39.9 52.3 52.3 Load chain Measure the sections of the load chain that come into contact with the load sheave with a slide calipers. Re- place the load chain when the limits of Table 12 are exceeded. -
Page 23: Adjusting The Brake
ADJUSTING THE BRAKE DANGER • The brake must be adjusted only at a NITCHI Service Shop or by a qualified MANDATORY person with the appropriate knowledge. • The power source must be turned off before the brake is adjusted. ELECTRIC •... -
Page 24: How To Use The Chain Limit Gouge
(to be adjusted between 1.3 and 1.5mm) Brake Wheel Working Limit Replace the brake wheel when its thickness has reached the critical dimension or less. Brake lining Brake wheel thickness (t) Model MH-5 MHT-5 MHC-5 Normal dimension 7 mm 6 mm Critical dimension... -
Page 25: Trouble-Shooting
TROUBLE-SHOOTING HOIST TROUBLE-SHOOTING Table 13 Condition Troubles Trouble-shooting methods Press the buttons hard. Doesn’t start when pressing Polish or clean the contact points. hoisting and lowering Repair the control cable that push- buttons. may be disconnected or faulty contacts of the terminals. Electric power is property Doesn’t start The contact of the limit switch...