12
Care and Maintenance:
Analyzing problems
Your Compu-Spray was thoroughly tested at the factory.
Please read all these instructions
There could be a problem if the Compu-Spray does not use its tank of solution in its usual week
or so. It is necessary to be aware, however, that while it is unusual for the wind to be still for
almost a week, it is not impossible, especially during a very hot, dry spell. Mosquitoes will not be
active and the Compu-Spray may spray very little, if at all, at such a time. This is extremely rare,
so if your Compu-Spray does not seem to be pumping or you hear the pump running with no
spray or see a poorly shaped spray, (it should be a hollow cone of fine mist); you may want to test
its operation. Proceed as follows.
To Test:
Lower the Compu-Spray to where you can reach it and leave it there. Turn the switch
off for about five seconds then turn it on again. This will start a new 12-hour cycle, but because
of the “Spray Delay” there must be a 45-minute wait before the test can proceed. Move the Wand
into on of the Windswitch sectors. When making contact by moving the Wand manually, you
must be aware of the Contactor Dwell Time, which is almost a full second. This should cause a
spray of about 30 seconds. Observe the spray.
Nothing happens, pump does not run.
Cause – the wires to the batteries may be connected
incorrectly.
Pumping is too weak:
Nozzle dribbles, Cause – if the batteries are a couple of months old, they
may be too weak or defective to make a good spray. Battery voltage does decline with use but
high quality batteries should last three months. Before giving up, be sure to try with a new set of
batteries. One of the two, although new may be a dud.
No spray but motor runs
or spray is solid jet, not a mist. Cause – Nozzles and filters require
attention.
Care of Nozzle and Filters:
The nozzle can plug with dirt or dried insecticide. Always use clean
water and rinse out the tank occasionally.
The hole in the nozzle is very small. For this reason, it is protected by the filter screens and each
Compu-Spray is supplied with a set of spare nozzle parts.
If your Compu-Spray is spraying poorly or not at all when the motor runs, use the following
procedure.
Remove the Nozzle Holder with the Nozzle from the Spray Pipe, using a twisting motion.
Unscrew the cap from the nozzle holder and remove the yellow core, which is loosely held inside.
Don’t drop it! The small hole in the nozzle can be seen easily, and also the fine screen in the
nozzle holder, both of which may need cleaning occasionally. Soak all the parts in hot, soapy
water and rinse until they are clean.
Exercise care when reassembling the nozzle parts. The yellow core can be damaged if it is not
properly seated in the nozzle and the support wire of the nozzle holder placed inside it.
Reassemble in the sequence as shown on the following page.
