-
9 -
1/05
#RU-
In this application, we know that the well will eventually recharge itself, #RU = A
(Automatic).
#RF-
This well is known for sand to jam the impeller, therefore “oc” should be included so
that the pump will attempt to automatically restart after an overloaded condition.
History shows that 2 or 3 starts and stops usually clears the sand out of the impeller.
#RF= oc2 or oc3.
UCTD-
This well may become air locked on startup, but will usually re-prime itself in 5 seconds
or less. UCTD = 10
GF-
Because this type of fault indicates the impending failure of the motor and it may take
several days to get a new pump and schedule for a driller to remove and replace the
pump, GF setting of 10% of full load amperage will give the well owner enough time to
prepare for pump replacement. GF = 15.9A x 0.10 = 1.59
SYSTEM DISPLAY
The output display can show one of the following parameters when the MODE SELECT switch is in
the RUN position: average voltage or current, each line current, or each individual line-line voltage.
The display is also used for programming the operating parameters of the device. The display also
identifies what caused the unit to de-energize its relay or what is keeping the unit from energizing its
relay. The last fault (not the current fault) can be displayed by pressing and holding the
RESET/PROGRAM button while the MODE SELECT switch is in the RUN position. When the unit
trips off or is holding the motor off, the current fault condition will be shown in the display without
pressing the button. Table 3 below lists the fault codes the unit could display.
Displayed
Message
Meaning
oc Tripped
on
overcurrent
SP
Tripped on current single phasing or unit won’t start because the voltage is
single phased
ub
Tripped on current unbalance or unit won’t start because the voltage is
unbalanced
Hot
Tripped on motor high temperature
uc Tripped
on
undercurrent
CF
Tripped on contactor failure
GrF
Tripped on ground fault
H I
A high voltage condition exists
Lo
A low voltage condition exists
rP
Incoming phases have been reversed, the motor may run backwards if
started
oFF
A stop command was issued from a remote source
Table 3: Fault Codes and Their Meaning