1-800-MAGLINE
(624-5463)
Lift
Plus
®
33
How do I test switch functionality?
Please use caution when removing covers and exposing moving parts.
Diagnostic Instructions:
1. Remove battery cover and remove the wires from the battery terminals. Hook Multi-Meter
to wire terminals and set range to Kilo-Ohms.
2. Check Power Switch
• OFF
• Make sure power switch is turned OFF.
• Record the reading. Example in picture is 84.7 K-Ohms.
• ON
• Good: Turn power switch on and if the power switch and breaker are functioning
properly then the meter will read a lower resistance. Example in picture is 1.158
K-Ohms.
• Bad: If the power switch or overload circuit is bad, then the reading will not change.
• Check the overload circuit for continuity:
• Place the black power lead on the LH circuit terminal and the red power lead on the
RH terminal. A functioning overload circuit will show 0 K-Ohms.
• If the overload circuit is good, then replace the power switch.
3. Check Up/Down Switch
• Make sure power switch is turned ON.
• Up
• Good: Press the Up/Down switch to Up and the meter will read a lower resistance.
Example in picture is .1253 K-Ohmns (or 125.3 Ohms).
• Bad: If no change in meter, check the wire connections. If the wires are properly
connected, then replace the Up/Down switch.
• Down
• Press the Up/Down switch to Down and the meter will read a lower resistance.
Example in picture is .2449 K-Ohmns (or 244.9 Ohms).
• Bad: If no change in meter, check the wire connections. If the wires are properly
connected, then replace the Up/Down switch.
4. Check Control Board
• If the switches are operating correctly, then determine whether the terminals on top of the
control board are getting power to the motor.
• Remove the top covers from the LiftPlus. Remove the Multi-Meter from the battery and
reconnect the battery. Change the range on the Multi-Meter to volts.
• Connect the Multi-Meter to the motor terminals on the control board.
Readings should be:
• 0 volts when switch is OFF
• 12 volts when switch is ON and Up/Down switch is pressed Up or Down.
• If there is no voltage on the motor terminals when there should be,
contact Magline.
Motor Terminals