Donaldson Company, Inc.© 1998
21
7.0 TROUBLESHOOTING GUIDE
TROUBLE
REMEDY
POSSIBLE CAUSE
B. Blinking red light
functioning on the
Control Board; shaker
motor does not start
(cont).
4.
Pressure switch function.
a. Pressure switch may not
have plastic tubing
connected properly.
b. Pressure switch has
failed.
4a. Reconnect and replace, if
necessary, the clear plastic
tubing for Ambient or Delta
control. Reference Figure 13
Ambient and Delta Pressure
Switch Details. Ensure that
the tubing is not damaged or
pinched. Note:
The main
blower fan must be on for
30 seconds minimum for
the timing sequence to
start. The Delta control starts
the shake cycle only after the
filter element obtains a 3"
pressure drop (reference
Figure 13 Ambient and Delta
Pressure Switch Details).
4b. With the timer board powered,
remove the two white wires
from the pressure switch.
Using a small wire, jump
across the two connectors on
the end of the two white wires
and maintain contact for 30
seconds minimum (reference
Figure 13 Ambient and Delta
Pressure Switch Details).
Caution:
Be careful not to
touch the high voltage wires
in the control box. Remove
the jumper wire and wait for
60 seconds on RVS-5/10/15
units. If the shaker motor
runs, replace the pressure
switch or correct tubing.
Reference Drawings
2SG-40533-00 Single VS
