REED SOVA7, Maintenance & Operation Manual

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SOVA SERIES 7
PNEUMATIC SPRAYING MACHINE
SOVA
OPER.
PAGE 15
H. SYMPTOM – INSUFFICIENT COMPRESSED AIR
CORRECTIVE ACTION – HOW MUCH AIR IS ENOUGH?
Most problems occurring on the average gunning jobs are the result of improper application of
air or insufficient amount of air.
*Make sure the compressor is of adequate size, is properly adjusted and capable of producing
maximum capacity.
*Multiple compressors may be used to gain the required volume of air. In this situation, the
compressors should be arranged so that they discharge into a certified central air receiver.
From this a single air line of proper size can then be run from receiver to machine.
*Always supply the machine with the same size air supply hose as the material hose being
used for gunning. Multiple small hoses often do not have the carrying capacity of a single
larger hose.
*Make sure all valves are open between the air source and machine. Check that supply line
is free of kinks or blockages.
*Run material hoses from the machine to the nozzle in as straight a line as is possible. This
will improve the flow characteristics and reduce wear.
*Exercise caution when coupling hoses that no foreign objects are present or restrictions at
point of connection.
*Always use good premium hose specially manufactured for gunning applications.
*The amount of air flow being received can be tested for proper volume as follows when flow
meter or orifice testers are not available:
*With hopper empty of material and having the pad loosely clamped, open main air valve to
full open position.
*Open the air motor main valve and the throttle valve to full open.
*The air motor should reach full RPM without hesitation. If air motor does not come to full RPM,
the air supply to the machine is marginal. This condition could result in a marked decrease in the
volume of material introduced into the air stream within the machine and out of the material hose.
REVISION: