Vestil EPT-30 - Manual (Page 135)

135
04/26/07 15-126-013
V ESTIL M FG . C O . 4
Problem: Possible cause(s): Action:
Unit will not raise; motor does not
run
Loose wire
Bad solenoid
Upper limit switch out of
adjustment
Verify 24 volts at coil when raise is
pushed, if no voltage, trace
wiring back to till her head
looking for voltage on each side of
the connectors until the bad
connection is found.
If voltage is present at the solenoid
and the unit does not raise,
remove the two wires to the coil
and measure the coil resistance.
It should be around 19 ohms. If
it’s open, or shorted replace the
solenoid.
Bypass upper limit switch and see if
the unit raises…DO NOT TAKE IT
ALL THE WAY UP… If it does
raise, verify the limit switch is
normally closed and will open
when activated. If the limit
switch is ok, try to adjust the
switch accordingly so that the
units raise height is approximately
7 to 8”
Unit will not raise; motor runs Lower solenoid stuck on Check to see if the lowering switch
is stuck on. If it is, remove the
tiller head via 3 screws on bottom
and replace switch, or tap on switch
to see if it can be freed up.
Unit will not lower
Loose wire; bad coil
Verify 24 volts at coil when lower is
pushed, if no voltage, trace
wiring back to tiller head looking
for voltage on each side of the
connectors until the bad
connection is found.
If voltage is present at the coil and
the unit does not lower, remove
the connector to the coil and
measure the coil resistance. It
should be around 39 ohms. If it’s
open, or shorted replace the coil.
Unit keeps blowing fuses when the
raise button is pressed
Shorted solenoid for motor raise Remove the wire to the solenoid coil
on the pump motor. Measure the
resistance, it should be around 19
ohms. If it is nearly zero ohms
replace the solenoid.