Field Controls 20+UL - Manual (Page 4)

Page 4
REPLACEMENT ITEMS
The following items are available for replacement. Refer to Figure
4 for guidance in locating and assembling replacement parts.
PART NUMBER DESCRIPTION
46297800 Main Float and Switch Assembly
46297900 Overflow Float and Switch Assembly
46298000 Check Valve*
46298100 Impeller Assembly
*NOTE: The Check Valve includes an O-ring.
TROUBLESHOOTING
I F THE UNIT DOES NOT FUNCTION PROPERLY , REFER TO THE
FOLLOWING
1. Unit does not run:
a.
Check the power supply.
b. Check the appliance to see if condensation is actually
being generated.
c. Check to make sure the pump float mechanism moves
freely and clicks the activation switch when moved up
and down.
d. The motor is protected by a thermal overload device,
which may have tripped. This may be verified by
measuring the resistance through the motor coil. An
open circuit reading indicates that the motor has
overloaded, and the unit must be replaced.
e. Check the drain line(s) into the pump for obstructions.
Note: If these lines are clogged and remain clogged, the appliance may eventually be damaged.
2. Pump makes loud noises when running:
a.
Check the tank for debris and clean if necessary. The impeller may also be cleaned, if needed. Refer to the
maintenance section above for cleaning instructions.
3. Unit runs but does not pump liquid out:
a.
Check the activation float to be sure it is not stuck in the up position.
b. Check the height of the discharge tubing to be sure it does not exceed 20 vertical feet.
c. Check the discharge tube for obstructions and clear if needed.
d. Check the check valve for obstructions. Refer to the maintenance section above for cleaning instructions.
4. Liquid drains back into pump from discharge line:
a.
Check valve may have debris in it. Refer to the maintenance section above for cleaning instructions.
b. If the discharge line is plumbed so the highest point is less than 5 feet above the pump, the check valve may
allow liquid to drain out of the line. This is normal and will not damage the pump.
5. Liquid leaks from around the check valve:
a.
If the check valve is too tight or too loose it may leak around the O-ring. Check that the valve is hand tight, then
tighten an additional 1/2 turn with a 9/16" wrench.
b. If the O-ring under the check valve is damaged, replace with a 1/2" ID X 11/16" OD X 3/32" width O-ring, or
purchase a replacement check valve, which includes an O-ring.
Figure 4