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iv.
The gun leaks out the nozzle.
a)
Check front valve, both the spring and outlet check. The check may
not seat, replace with spare. The spring may be too weak therefore
stretch or replace.
b)
Chemical drum elevated so high that gravitational pressure is
excessive and keeps valves open.
c)
Sometimes the leak is because of the nozzle, ie, it runs out of the
nozzle outlet between it and the valve, just keep nozzle horizontal
to ground while operating.
v.
No ‘Draw
-
off system’.
a)
The gun is used for many purposes and a universal ‘draw off
system’ hasn’t been devised. Genesis
draw off systems are
available for several products, please phone toll free +44 (0) 800
214 811 for more information. In the meantime, cut a hole in a
spare drum cap and push hose to the bottom.
vi.
The gun will not ‘Suck up’.
a)
Test front valve
–
it may be a seating problem. To test
–
remove
nozzle and valve, depress trigger and when plunger is to front hold
finger over barrel outlet hole then release trigger
–
if it fills then
that is the problem. Check for obstruction and if necessary, replace
outlet check and/or spring.
b)
Check suction hose to inlet nozzle connection
–
cut off one-
centimeter hose and refit.
c)
Check inlet valve
–
if necessary, replace or clear obstruction.
C Suction Hoses
Most Power Dosers
™
have been sold for a single purpose, either pursuant to a company
promotion or purchased by a customer for a single job. The
Power Doser™
will therefore work
adequately for that job but then fails when used for something else. The solution to the failure is
then related to specific product knowledge. As a general rule, the
Power Doser™
works with
“everything” but changes may be required to suction hoses
and to the gun by tweaking it, eg,
with a spacer for a high viscosity product or inserting a weaker main spring for a low viscosity
product.
Some general principles are:
a) Thick products require a large suction hose and maybe a spacer.
b) A thick and harsh product may require a large EVA suction hose and spacer.
c) Thin products may work best with the 6 mm suction hose and/or inlet nozzle reducer.
