11
Flow Fault Detection
(Pumps are shipped with flow fault enabled.)
If the pump is unable to compensate for > 10 seconds due
to excessive back pressure, the pump enters flow fault. The
motor will stop and the LED will flash quickly. The auto-
restart feature will attempt to restart the pump after 10
seconds. If back pressure is not corrected for an additional 10
seconds, the pump will attempt a second restart. The pump
will continue restart attempts every 10 seconds for a total
of five times. If restart attempts are unsuccessful, the pump
will shutdown and the LED will flash four times every six
seconds. If the excessive back pressure is removed within the
five restart attempts, the pump will run normally.
Note:
The pump must be running without fault for at least 20
seconds for the auto-restart feature to be reset to five tries.
Disabling the Fault Shutdown and Auto-restart
Features
If the fault link is fitted when the pump
is initially switched on, the LED will
display a quick double flash before
running. If the link is not fitted, the
pump will immediately run without
the LED flashing.
To disable the fault shutdown and auto-
restart features, remove the two screws
from the belt clip and set the clip and
screws aside. Remove the single screw
from the back of the pump case. Gently
remove the top of the pump case by
sliding it up and off. Using a pair of
tweezers, grip and pull off the program
connect link located on the board just
below where the motor wires connect
to the board. Reassemble the pump
and operate. The pump LED will indicate a flow fault by
flashing quickly, but the pump will no longer shutdown
during a flow fault. To restore flow fault shutdown and
auto-restart features, replace the program connect link.
Tip:
For easy storage of link, simply place the link on one
pin only as shown above right.
Link fitted
Link stored
3
cont’d
