E-one Extreme DH071 - Supply Voltage Checks

Troubleshooting 2–2
Supply Voltage Checks
The Environment One grinder pump is equipped with a 1725 rpm, 1 hp, multi-tap 120V/240V
motor. The operating voltage parameters of the motor are plus or minus 10 percent of the
specic application, equating to 108V to 132V in the 120V application and 216V to 264V in the
240V application.
Color/Pin # Color/Pin #
Normal
Reading
Operation If Reading is Wrong, Check:
L1 L2 216V – 264V
Incoming volt-
age to breaker
OK
Breaker tripped or off in main panel;
lost leg of power
Red 2 Black 3 216V – 264V
DBL pole
breaker OK
Bad breaker; lost leg of power
Neutral
Alarm breaker
(incoming)
108V – 132V
Incoming volt-
age to breaker
OK
Breaker tripped or off in main panel;
lost leg of power; jumper wire not con-
nected
Neutral
Alarm breaker
(pump side)
108V – 132V
Alarm breaker
OK
Bad breaker
Neutral Yellow 5 108V – 132V
Voltage to
alarm switch
OK
Loose wire between alarm board and
single pole breaker; bad alarm board
Supply Voltage and Breakers, 240V
Table 2–1
Color/Pin # Color/Pin #
Normal
Reading
Operation If Reading is Wrong, Check:
Neutral L1 108V – 132V
Incoming voltage
to breaker OK
Breaker tripped or off in main panel;
lost leg of power
Neutral Red 2 108V – 132V Breaker OK Bad breaker; lost leg of power
Neutral
Alarm breaker
(incoming)
108V – 132V
Voltage to alarm
OK
Breaker tripped or off in main panel;
lost leg of power; jumper wire not con-
nected
Neutral
Alarm breaker
(pump side)
108V – 132V Alarm breaker OK
Loose wire between alarm board and
alarm breaker; bad alarm board
Neutral Yellow 5 108V – 132V
Voltage to alarm
switch OK
Loose wire between alarm board and
single pole breaker; bad alarm board
Supply Voltage and Breakers, 120V
Table 2–2