www.nassarelectronics.com
2
PM-22 PUMP MONITOR MANUAL
The PM-22 Series is a variety of pump monitors
designed to protect single-phase pumps from dry-
well, dead-head, jammed impeller, waterlogged tanks,
r a p i d c y c l i n g , u n d e r / o v e r v o l t a g e a n d
over/underload. It includes an LCD display that shows
the voltage, current, power consumption and faults.
The trip point is user-adjustable and it also features
automatic calibration allowing adjustments for
speci c pumping applications, reducing the
possibility of false or nuisance tripping. A unique
microcontroller-based sensing circuit constantly
monitors the power and line voltage for uctuations.
When a fault is detected the PM-22 after the trip
delay— will turn off the pump . The user can select
automatic or manual reset, when automatic reset is
selected the PM -22 will turn on the pump after the
restart delay (delay is user -adjustable).
The PM-22 has an internal contactor capable of
starting motors up to 1.5 HP.
Description
Wiring
The PM-22 is used in single phase pumps with a
current consumption in the range of 4 to 15 Amps. This
unit should be mounted in a convenient location in or
near the pump control box. If the location is wet or
dusty a NEMA 3R, 4, or 12 enclosure should be used.
The PM-22 must be protected by a fuse or circuit
breaker to avoid any damage. The following diagrams
show how to connect the PM-22 depending on the
supply voltage available:
120VAC SUPPLY VOLTAGE
Features
Ÿ
Protects pumps from dry-well, dead-
head, jammed impeller, waterlogged
tanks, rapid cycling, under /over
voltage, and over/underload.
Ÿ
Starts motors up to 1.5 HP without the
need of an external contactor.
Ÿ
Stores faults on memory.
Ÿ
LCD displays: Line voltages, current,
power, failures, time delays, and a
setup menu.
Ÿ
Auto calibration.
Ÿ
Manual or automatic reset.
CB = CIRCUIT BREAKER OR FUSE
CA = CONTROL CONTACT
DANGER!
Potentially hazardous voltages are present. Electrical
shock can cause death or serious injury.
Installation should be done by qualified personnel
following all National, State & Local Codes.
BE SURE TO REMOVE ALL POWER SUPPLYING THIS
EQUIPMENT BEFORE CONNECTING OR DISCONNECTING
THE WIRING.
READ THE INSTRUCTIONS BEFORE INSTALLING OR
OPERATING THIS DEVICE.
KEEP THIS MANUAL FOR FUTURE REFERENCE.
The contact “CA” could be a pressure or float switch, a
manual switch or any other control used to start/stop
the pump automatically or manually.
120 VAC
PUMP
CB
CA
T1
S1
TC
SC
T2
S2
PUMP-MONITOR
220 VAC SUPPLY VOLTAGE
220 VAC
PUMP
CB
CA
T1
S1
TC
SC
T2
S2
PUMP-MONITOR
CB = CIRCUIT BREAKER OR FUSE
CA = CONTROL CONTACT
PM-22 PUMP MONITOR MANUAL ENGLISH 2018
viernes, 4 de octubre de 2019 10:45:09 a. m.
