R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 10 Stepless - Manual (Page 16)

LM10 STEPLESS I&M MANUAL/EN/11.30.2010
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3.3 Correcting the Direction of Hook Travel
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WARNING: DO NOT change control leads in pushbutton enclosure or at motor relays. DO
NOT change nameplates on pushbutton assembly. The upper/lower safety limit switch is
wired in series with “UP” control circuit as furnished from factory. Changing pushbutton
control leads or nameplates will prevent the upper safety travel limit switch from functioning
properly.
Reversing any two power leads of a three-phase AC motor will reverse the direction of rotation.
Reverse any two leads of a three-phase power at the main power source or at connections to motor.
Do not change internal wiring of hoist.
After changing two of the main power leads, recheck direction of rotation. Press “ UP” button only. If
hook travel goes in “UP” direction, proceed to section 3.4. If not, redo section 3.3.
3.4 Checks before the first test run
• Turn on power from main switch and control voltage switch.
• Within about 1 second the control panel should have display.
• In a fault situation the red “FAULT” status indicator blinks and the display shows a fault code
instead of frequency.
• Check that green “RUN” status indicator is off.
• Check that external connections and selected control parameters are according to application.
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CAUTION: The supply cable must be equipped with a power switch or an isolator in
conformity with the regulation.
3.5 Operational Checks – No Load
Check hoist motor brake function. Run empty load block up or down to check that load block does not
drift more than 1.0 inch [25mm]. If so, adjust brake as described in Section 5.3 of this manual.
Run empty load block down to check that fall stop (located on free end of load chain) makes proper
contact with upper / lower travel safety limit switch and that limit switch functions properly.
Run empty load block up to check that load block makes proper contact with upper / lower travel safety
limit switch and that limit switch functions properly.
Run empty load block up and down several times while checking for proper tracking of load chain.