Poweramp BAR - LIFT BARRIER - Manual (Page 10)

Limit switch LS1 should be set so that it is activated by the barrier arm when it
becomes vertical and stored.
Limit switch LS2 should be set so that the hydraulic cylinders rod pin lifts and
actuates the whisker as the barrier arm stores in the horizontal position.
TROUBLE
1. With Push-button
pressed, pump motor
does not run; barrier does
not raise. 1. No power. 1. Check voltage input at
control.
OR, blown fuses or overload
open. Check fuses, replace if nec-
essary with correct type.
Reset overload.
2. Barrier will not raise or
lower, single phase motor
running or humming. 2. Line voltage too low. 2. Check for low voltage.
Increase wire size to cor-
rect voltage drop.
OR, defective capacitor. Disconnect capacitor from
motor. Test. Replace if
necessary.
OR, open centrifugal switch
at zero RPM. Repair or replace centrifu-
gal switch.
3. Barrier will not raise or
lower, three phase motor
running or humming. 3. Phase reversed, motor
running. 3. Reverse any two legs at
disconnect box.
OR, Motor single-phasing
(motor humming). Check fuses, wiring and
overload reset.
4. Barrier will not lower -
motor running. 4. 4 way solenoid valve not
being energized. 4. Use piece of ferris metal
to check for magnetic pull
when energized. Replace
or find signal loss.
5. Amber light does not turn
on. 5. Blown bulb. 5. Replace.
6. Amber light does not turn
off when arm stores verti-
cally. 6. Limit switch LS1 not
opening 6. Adjust switches per page
9, figure 5.
7. Amber light does not turn
off when arm stores hori-
zontal. 7. Limit switch LS2 not
opening. 7. Adjust switch per page
9, figure 6.
POSSIBLE CAUSE PROBABLE
REMEDY
TROUBLESHOOTING THE ELECTRICAL SYSTEM
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