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Chapter.1. Noteworthy for installing an electric chain hoist

1.Checkup before installing

● There are several check points as follow;

1) Model 2) Voltage (3 phase, Voltage 220V, 380V, 440V. 460V)

3) Proof load 4) Trolley type 5) Lift

6) Push button type 7) Power cable length

8) Operating instruction 9) Any damage during moving and loading

2. Check point for particular cases

* Do no exposure to explosive places (explosion disposal hoists are available)

* Do not use or make an inquiry to the service center in a particular situation as

follows;

Under high temperature (over 40°C), Under low temperature (under -15°C),

in high humidity (over 85%), in the high elevated areas (over2000m)

In a basin(IP54)

* Especially to use in a low temperature, need to have extra capacities against

breakdown.

* lighting fixtures - keep 150LUX at the least from the driver's sit against any

accidents caused by mishandling.

* It produce around 71dB. For the quiet order, make inquiries at an office

* Control voltage...

3. Power

* Hold a power sauce failure or power transmission failure against a fire.

* Keep the Instruction for setup.

* Check the voltage and so on

4. Working rate

* Load time rate

* Safety index

5. Safety supervision

* Have safety wears such as gloves, boots, a crash helmet keep free from the

danger

6. Checking HOIST SPARE PART

1)CHAIN GAUGE (see the page 24 ,

2)OIL funnel (see the page27

LT,LD-TYPE HOIST is designed to stop operating hoist by the CLUTCH SLIP

action for avoid over loading. Therefore, when you use LT ,LD type of hoist,

need to observe the proof load.

Содержание LD Series

Страница 1: ... 1 LT LD Series Electric chain hoist USER S INSTRUCTION LK CO LTD ...

Страница 2: ...8 Notice Trolley adhered case Chapter 2 Notice for operating 1 Do not over load 2 Prevention of breakdown SAFETY LEVER 3 Putting up on hook SLINGING 4 Suspending and lifting up on hook 5 Lifting on a slant 6 Handling double hoists 7 No sudden reverse 8 INCHING handling travelling load collision 9 Handling for PUSH BUTTON CODE and SWITCH CASE 10 Do not come close under the machine no matter the hoi...

Страница 3: ...ad chain 7 Push button switch 8 Comprehensive check 3 Check line for upkeeping and repairing 4 Check point and components replacement 1 Motor break 2 Load chain 3 Cultch 4 Chain stopper bolt 5 Chain stopper 6 Gear oil 7 Hook 8 Weared trolley wheel 5 Assemble every piece into a hoist 6 Breakdown indications and solutions 7 Appropriate hoist handling 8 LT LD TYPE Hoist assembling 9 WORM Trolley asse...

Страница 4: ... 4 Ⅰ Operator s Instruction LT LD Type symbol classified by machine Please conform product s type number which you us S or W is for number of Chain S Single chain W Double Chain ...

Страница 5: ...000m In a basin IP54 Especially to use in a low temperature need to have extra capacities against breakdown lighting fixtures keep 150LUX at the least from the driver s sit against any accidents caused by mishandling It produce around 71dB For the quiet order make inquiries at an office Control voltage 3 Power Hold a power sauce failure or power transmission failure against a fire Keep the Instruc...

Страница 6: ...he dust before setting up or operating the hoist When you operate more than double load chain the low class chain can possibly slip out between the chains to make a twist Do not operate it with the twist still on It is dangerous Let the low class hook to be get out in opposite way see the picture no 3 2 Chain back install It is necessary to install a chain bag If you don t install a chain bag unlo...

Страница 7: ...t can make trouble and danger Also it is dangerous if the chain bag is much longer than the load chain If you change the load chain into longer one the chain bag should be the appropriately long enough 3 Torque Limiter Sleep Clutch Do not set the torque Limiter on power for nothing Torque Limiter is only for emergency No matter it has regular durability clutch part would be worn out and unable for...

Страница 8: ...ter in a safe from a rain The chain should be free form the rain 8 Notice Trolley adhered cases 1 ADJUST COLLAR As you convert the adjust collars trolley is available to be organized with various rank rail width 12 5mm There should be the same number of collars in the both sides of the connector Do not install like picture no10 It cause the accident 2 Installing in a rounded horizontal rail As you...

Страница 9: ...es disturb operating see the picture no 13 3 Do not exceed the limit of the across for up and down ward right and left Finish with the grinder for the rail part where the wheel passes by Stopper at the end of the rail 1 Attach a stopper at the spacious spot a Therefore you can avoid the hoist crashing to breakdown minimum a 500mm 2 Stopper should be attached with a shock absorber to stand up to th...

Страница 10: ... 10 4 You can avoid any impact by installing the Stopper and Limit switch for operation Crain only 5 Additional signal Mark on the bottom to avoid operate failure and damage ...

Страница 11: ... speeding Be well aware of it and follow the proof load A disaster throw you off your guard 2 Do not approach closer to the machine as long as the hoist is working It is dangerous as far as the chain moves up and down 3 A worker should be away from the load as the hoist is moving right and left 4 Be attentive to the any dangerous elements to secure the safety and help the driver to work in broaden...

Страница 12: ...ous Let the things to be reloaded Slip2 As the θ is too much wide it put stress on the lifting sling and even break latch or throw the load down For the safe transport change the way to lift up a load or find a longer lifting sling The degree of θ should be lower than 60 Slip3 As the lifting sling is too thick to send a hook lever back find another lifting sling It will be better to find metal adh...

Страница 13: ...e 20 5 Lifting on a slant It is risky to work on a slant Be sure to move the chain hoist at the very center of it and lift 6 Handling double hoists Do not operate two hoists at the same time As you see the picture 23 when you life up with double chain hoists there can be a disparity of degree from the axis of the earth and it can brings accident It is also risky to lift up eccentric things As you ...

Страница 14: ...bility and lifting speed is set up in proper way However over load still cause fatigue brake As a load chain shock loaded load chain tension waves short cycles a little shock is always loaded to a load chain see picture26 If there is shock in a row it can easily cause a sudden large tension because of duplicated tension No matter the tension change of a load chain can be controled in seconds there...

Страница 15: ...the appropriate stand for the hoist It is to prevent unexpected damages or motion failure see figure 28 Broken or dirty button switches may cause an electric shock or motion failure Keep it in safe and soundness To block the motion failure check the direction on the PUSH BUTTON Button made of super plastic switch can be deformed by a high temperature Unsystematic handling can cause double collisio...

Страница 16: ...e refueled for conserve It brings ten times of difference Try to put resonable amount of oil and do not over refuel to be spilt on the ground It can also cause accident picture 31 13 In case adhere to trolley During operation 1 No pulling a button code for horizontal move Do not pull a button code to move to left and right picture 32 Push button would be break down to cause slip sudden accident 2 ...

Страница 17: ... After powered if the up and down motion is reversed alter the black with red line such as follow picture For setting up in the out door there should be sufficient grounding facilities against lightening damage Need to found a lightening shield standardized by each country Set up the power breaker considering the height for a view point from 0 7 1 7M 2 Capacity of current switch ant fuse Power swi...

Страница 18: ...t to right find in a the intersection of the line and curved lines This intersection tells the limit of a cap tire 2 Checking up before operating 1 The metalized parts of upper and lower hooks Is it free from breakaway Isn t it damaged or deformed of a hook or others Are bolts and nuts tight enough How the sticking is fine 2 Bottom hook part Is it free from breakaway Does a hook runs easy and smoo...

Страница 19: ...me plate Is it easy to read and understand Keep in clean The next two items are memorable for an order Be sure to inform the name and serial no of attachments MODEL SERIAL NO 5 Chain back Is a chain back fine Is it free from falling Is the chain back suspended nicely Isn t there water or dust in a chain back ...

Страница 20: ...ording to the directions How long the hook sawing after a bush button stopped Does a proof load work as the machine lift up and down Doesn t it make any noise 3 Notice for up keeping and repairing 1 Before put a machine in order hold up power for avoid slipping 2 Wear a crash helmet and safety belt to be away form any scratch or hurt by burr or split pin 3 To maintain the safety against the slip o...

Страница 21: ...ts chain bag hold 10 of chain Turn down the main power 1 Brake of motor Check every 6 months or when break slips Way of disassemble the motor 1 Unscrew the bolt and remove safe lock of brake assembly Warning Be careful of 1st gear it could release which is connected with NO 5 Take out in a angle 2 Take off bearing nut washer 3 Bearing nut could be unscrewed 4 Take off brake cover 5 Remove rotor sh...

Страница 22: ...k Crack and vent of chain could damage to the hoist Without any alteration and crack Chain s wear is less than 10 which compare to standard chain diameter could be used If the chain s shape and heat alteration could examine with the unaided eye please change with new chain Table 1 Safe working load and normal diameter pitch ...

Страница 23: ... link with chain stoper pin which prevent twist of chain for 2 falls should be set vertically 3 Clutch Slip under it s standard lifting weight 1 clutch in set with right pressure at the factory But abnormal use of hoist could make slip under its standard lift Slip condition could adjust with slop clutch adjusting nut in side of clutch cover 1000kg 300kgf and 500kg 180kgf 2 Please call our dearer o...

Страница 24: ...med on the ground after hoist is down on the ground safety If you find any deformed chain anchorage bolt please change it into new one picture 9 To set a chain stopper or load chain they shall not twisted 5 Chain stopper Check it more than monthly Check if the stopper bolts nuts are loose monthly The chain stopper in unloaded part should attach itself to the third link from the end in unloaded loa...

Страница 25: ...p of the gear case assigned oil Do not let the skin trouble to replenish some oil or grease Handling with bare handling can cause some sickness Use the filter to avoid the second accident by sideslip and so on 7 Hook Check it more than monthly Crack Checking is the characteristic for common to upper hook and lower hook It brings widen gab to a hook door if it is over loaded As a wide gabbed hook l...

Страница 26: ... much impurities in idle sheave arbor bearing or a rotation deform and clean it 1 Any trouble in arbor bearing or rotation of idle sheave 2 Any impurities in the pocket part of idle sheave 3 Any protrusion deform in idle sheave picture 15 For assembling grease the rotation part No matter a idle sheave part is cleaned check if the protrusion of a idle sheave is deformed ...

Страница 27: ...e the picture17 disassemble the lower hook part to exchange No matter there is thrust bearing which can be replaced by itself draw a line between the top and bottom The larger inside diameter goes to bottom As the arrowed point see the picture16 shows remarkable deform it should be replaced 8 Abrasion of Trolley roller please check per 6 six monthes or any time ...

Страница 28: ...semble the upper hook pin washer and a fixed nut 2 As you see the picture to the right put the trolley connecter into a side plate of a hoist After then fix the hook pin in it Next put the washer in it and fasten the nut 3 After the assembling finish the wiring work For the assembling be sure to fasten the every parts ...

Страница 29: ...pposite sided wire and pull into the hoist body as much as possible 5 Turn on the push button to run the hoist and pull the load chain out to the opposite direction step3 6 Join a rubber buffer to the unloaded load chain which is taken out of step4 7 As you see the picture to the right find the buffer equipped unloaded load chain and set the chain stopper at the end of it At this time set it at th...

Страница 30: ...stallation As the picture1 shows you put the chain back connecter No 121 up the stay bolt c No 122 and then assemble the stopper pin At this time insert the stopper equipped load chain in the chain bag It is easier to arrange the chain ...

Страница 31: ... 31 4 Electric trolley installing ...

Страница 32: ...inside collar 0 5 1ton 75 0 100 2 125 4 2ton 100 0 125 2 150 4 5 How to settle a trolley interval For L K chain hoist settle a 12 5mm collar as follows Adjust the Collar according to the Beam Put the same number of Collar for both sides ...

Страница 33: ...ar 42 and then assemble the 47 and 73 by turns Step2 Screw the82 left to the 42 and then assemble the 79 44 80 and 81 by turns Step3 Screw the 10 to the 82 and then fasten it by 190kg cm Step4 Screw the 55 and 77 to the 42 for finish 7 How to assemble a chain guide ...

Страница 34: ...bove and then assemble it again the 91 20 92 20 by turns and next screw the 19 to the 88 to fix Step3 Push the 89 down to the 88 and fix it with 86 Step4 Assemble the 26 into the 25 and fix it with 23 Step5 Finally assemble the step4 into the 88 and fix it with 24 8 Classifying a hoist ...

Страница 35: ...ad 1 3 2 3 of proof load and occasionally for proof loading Ⅰ Ⅰ Ⅱ Ⅱ Ⅱ heavy Appropriate to load more than 2 3 of proof load Often load for proof load Ⅰ Ⅱ Ⅱ Ⅱ heavier Appropriate to proof load Ⅱ Ⅱ Ⅱ 1 Chain hoist application degree 2 hoist crane sorting and grouping groupⅠ crane for power plant crane for a ceiling of a factory crane for a ceiling of a job site assembling crane for a rail road const...

Страница 36: ...ing unscrewed enough or disconnected for wiring in cable switch s non conformity for connection electric lightening Poor Grounding earthing Watered in a body main line is jammed in to be tore and then touch a body running ar random Watered in button case or a body Make a short circuit with a tore button coat Melted connector circuit breaker bouncing Over capacity of circuit breaker octopus spread ...

Страница 37: ...olling down stop for a minute Do not operate any quick turning 12 No extreme inching 13 No often use of preventive measure of over rolling 14 Hold a sudden loading for a load chain 15 Hold a inclined pulling 16 Hold a shaking of load 17 Do not tie load with a load chain 18 Hold loading from the end of load chain 19 Do not pull or move horizontally a push button code or operating rope 20 Follow the...

Страница 38: ... 38 LTU EXPLODE VIEW ...

Страница 39: ... 39 LT LD TYPE PARTS CODE TABLE ...

Страница 40: ... 40 W TROLLEY EXPLODE VIEW ...

Страница 41: ... 41 W TROLLEY 1 TON TYPE HOIST ASSEMBLING ...

Страница 42: ... 42 W TROLLEY 2TON TYPE HOIST ASSEMBLING ...

Страница 43: ... 43 ...

Страница 44: ... 44 ...

Страница 45: ... 45 ...

Страница 46: ... 46 LT TYPE HOIST DIAGRAM2 POINT TYPE ...

Страница 47: ... 47 LDS TYPE HOIST DIAGRAM2 POINT TYPE ...

Страница 48: ... 48 W TROLLEY 1SPEED ...

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