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3. Capacitor check.
a. Make sure the ca pac i tor is
dis charged. Use extreme
caution as a spark might
occur.
b. Disconnect the ca pac i tor
leads and connect an analog-
type volt-ohmmeter to the
capacitor terminals.
c. Set the meter on the
RX1,000 scale to check the
start ca pac i tor. Set the meter
on the RX10,000 scale to
check the run ca pac i tor.
d. The
meter
in di cate low ohms when it
is first connected, but as
the
ca pac i tor
charged (by the meter), it
will return to a read ing of
infinity (open circuit).
Duplex Pump Controller
AUX RELAY
/ HORN
HIGH
ALARM
PUMP 2
PUMP 1
LOW
ALARM
HIGH
FLOAT
LAG
FLOAT
LEAD
FLOAT
OFF
FLOAT
LOW
FLOAT
4. Start relay check.
a. Check the coil re sis tance It
should be 3,000 to 15,000
ohms.
b. Install a clamp on amp
meter around the start
wind ing lead.
c. Set the amp meter scale to
at least 2 times the pump
motor full load current.
Component
should
Main Winding
becomes
Main Winding
Start Winding
Start Winding
ALT
1 - 2
2 - 1
ALTERNATION
FLOATS OUT OF ORDER
PUMP 2
SEAL FAIL
PUMP 1
PUMP 2
TEMP FAIL
PUMP 1
RESET
PUMP 2
DISABLED
PUMP 1
MUTE
d. Place the H-O-A switch in
the Hand position to start
the pump.
e. The meter should read
ap prox i mate ly 2 times full
load current during starting.
f. After the motor has started
(within one sec ond) the
cur rent should drop to a
value much less than full
load cur rent.
5. Motor voltage check:
Typical
Motor
Lead
Mode
Black to
Start
White
Black to
Run
White
Black to
Start
Red
Black to
Run
Red
Voltage
Reading
Line Voltage
Line Voltage
Line Voltage
120%
Line Voltage
9
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