I-984 Page 5 of 5
Rev. M-43434 11/10/17
Troubleshooting
Symptom Probable Cause Remedy
Pump running when it is not
programmed to.
1. The program, date, and time are set
wrong.
2. Did not program an off time.
1. Check the program, date, and time to make sure
they are set properly. A common mistake could be
where an AM is supposed to be a PM.
2. Check the programs for an off time for each
program.
Pump is not priming like it
should be or not holding a
prime.
1. Hole in the tubing from the chemical
container to the pump head.
2. Hole in the squeeze tube in the pump
head.
3. Pick up tubing is not sealed to the
squeeze tube fitting.
1. Check the tubing from the chemical container to
the pump head for leaks by feeling the tubing for
chemical that has leaked out. Replace the tube if
necessary.
2. Replace the squeeze tube after inspecting it for a
possible hole or leak.
3. Tighten the nuts on the squeeze tube fitting.
Pump over feeding (using
too much chemical). Pump
under feeding (not enough
chemical).
1. The programs entered in the unit were
set wrong.
1. Check the program(s) to make sure they are set
properly. A common mistake could be where an
AM is supposed to be a PM.
Pump runs constantly. 1. Did not match the Event #, Days or
AM/PM for the off time.
1. Check the programs for an off time for each
program; make sure the events are matched up.
Warranty
Merchandise Returns
No Merchandise will be Returned for Credit Without DEMA’S Written Permission. Returned
Merchandise Authorization Number is Required in Advance of Return.
Product Warranty
DEMA products are warranted against defective material and workmanship under normal use and service
for one year from the date of manufacture. This limited warranty does not apply to any products that have
a normal life shorter than one year or failure and damage caused by chemicals, corrosion, physical abuse,
or misapplication. Rubber and synthetic rubber parts such as “O”-rings, diaphragms, PVC tubing, and
gaskets are considered expendable and are not covered under warranty. This warranty is extended only to
the original buyer of DEMA products. If products are altered or repaired without prior approval of DEMA,
this warranty is void.
Defective units or parts should be returned to the factory with transportation prepaid. If inspection shows
them to be defective, they will be repaired or replaced without charge, F.O.B. factory. DEMA assumes no
liability for damages. Return merchandise authorization number must be granted in advance of returned
units for repair or replacement (See “Merchandise Returns” above).
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