DirectFlo DF1400
Chapter 5: Trouble-Shooting and Repair
Comco Inc.
5-4
Issue Date: January 2009
Common Problems, Causes, and Solutions
Table 5-1: No Air Flow
Problem
Items to Check
Solution
Nothing happens
when the
footswitch is
depressed
(No air is coming out
of the nozzle)
√
Is the electrical power
ON?
Verify that the POWER switch is ON
and the POWER LIGHT is
illuminated. Check the connection of
the Power cord and Footswitch cord.
√
Is the fuse good?
Examine the fuse. Replace if
necessary.
√
Does the gage indicate
pressure in the
system?
Verify that shop air pressure of 80-
140 psig is supplied to the DirectFlo.
√
Is the nozzle plugged?
If you are using a nozzle with the
nozzle adapter, remove the nozzle
and depress the footswitch. If a blast
of abrasive occurs, the nozzle was
plugged. Tap it on the workbench,
back end down. Discard the nozzle if
it remains plugged.
If plugging recurs, either the tank is
releasing too much powder or the
nozzle is too small for the powder.
√
Is the PowderGate
operating?
When cycling the unit ON and OFF
with the footswitch an audible clicking
sound from the cylinder that opens
and closes the PowderGate should be
heard. If it is not, see maintenance of
the PowderGate below.
