R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 16-20-25 - Manual (Page 23)

LM16-20-25 I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
Remove Hoist Motor and Brake Assembly (refer to Figure 9)
1. Remove load from load block assembly.
2. Raise load block assembly to hoist body. Allow slack in chain to permit tying up bottom block
assembly to remove weight of bottom block assembly from load chain.
3. Remove and lockout power to the hoist.
4. Remove three-sided branding cover.
5. Remove three (3) screws (item 1) and take off Brake and Fan Cover (item 2).
6. Remove brake coil leads from terminals inside hoist electrical control enclosure.
7. Loosen brake cable gland on electrical control enclosure and pull out brake cable.
8. Remove hoist motor leads from K25 and K10 contactors located in hoist electrical control enclosure.
9. Loosen motor cable gland on electrical control enclosure and pull out motor leads.
10. Remove screws and remove electrical control enclosure from hoist motor.
11. Remove screw and remove mounting bracket from hoist motor.
12. Remove three lock nuts from threaded rods (item 5) and pull hoist motor and brake assembly out
away from gearbox.
Installing Hoist Motor and Brake Assembly (refer to Figure 9)
1. Mount hoist motor to gearbox making sure hoist motor is positioned properly. Push hoist motor into
gearbox until tight and threaded rods (item 5) are through end flange of hoist motor.
2. Use lock nuts to draw hoist motor in place against the gearbox. Tighten lock nuts evenly as the hoist
motor moves into place.
3. Mount brackets to hoist motor and tighten socket head cap screw.
4. Mount electrical control enclosure to hoist motor and tighten four (4) screws.
5. Insert hoist motor cable through motor cable gland on electrical control enclosure and reconnect
motor leads to K25 and K10 contactors. Tighten hoist motor cable gland.
6. Insert hoist motor brake leads through brake cable gland on electrical control enclosure and
reconnect hoist motor brake leads. Tighten hoist motor brake cable gland.
7. Recheck tightness of lock nuts holding hoist motor.
8. Mount end cap and tighten socket head cap screws. (Do not over-tighten.)
9. Replace three-sided branding panel.
10. Untie the load block assembly.
11. Unlock power and turn on.
12. Press “UP” button and check for proper phase rotation. If not correct, turn off power and change
position of two of the three power leads that were just reconnected.
13. If direction is correct, perform a no-load check and then a full load check per section 3.3 and 3.4
respectively.