BJM Pumps FAHRENHEIT SK-F Series, Installation, Operation & Maintenance Manual

Page: 57 / 64

32
SEAL MINDER
®
- THERMAL MOTOR SENSOR SWITCH
(For high temperature pump models)
Seal Minder
®
:
Also known as a seal failure circuit (or moisture detection circuit) is designed to inform the pump
operator that there is moisture within the oil chamber. This early warning can allow the operator to
schedule repair & inspection on the pump. The
Seal Minder
®
sensor probe is inside the oil chamber.
(The oil chamber houses the mechanical seals that are cooled & lubricated by oil). The
Seal Minder
,
when properly connected to a control panel, can help indicate seal failure. The
Seal Minder
cord
requires a seal fail circuit in control panel for warning signal.
Along, with the
Seal Minder
, the Fahrenheit
®
Series high temperature pumps also feature thermal
temperature sensor switches that are embedded into the motor stator windings. Three switches are
embedded into the stator windings and wired in series. The leads are connected to the pump control
panel through the sensor cable. If the windings would see a temperature above 300 degrees F, then
the switch(s) would open and cut power to the pump. Once the temperature dropped below 300
degrees F, the switch(s) would reset, and the pump would be returned to a state of operation. This
feature is designed to prevent damage to the stator winding and allow for longer pump life.
The sensor cable consists of four leads, two are connected to the
Seal Minder
, and two are
connected to the thermal sensor switches located in the stator windings. These four leads run to the
pump control panel and connect to the proper connections points for seal alarm and thermal cut off.
The black and white wires are for the
Seal Minder
connections and the thermal sensors will be
connected to the yellow and red wires. The three phase automatic wiring diagram shown earlier in the
manual will give a guide to the connections in the control panel. The manual for the control panel
should be consulted for the exact connections.
The sensor cable with
Seal Minder
and thermal sensor switch connections is standard on all
Fahrenheit™ Series high temperature pumps. The cable is designed for a high temperature
environment. The proper replacement part can be found parts list found in this manual. BJM Pumps,
can supply a control with the Seal Minder and Thermal sensor switch option. Separate stand alone
Seal Minder alarm panels are also available. Consult your BJM Pumps representative for part
numbers and ordering details. BJM Pumps requires the
Seal Minder
and thermal sensor switches be
used. Failure to connect or misuse of these devices will void warranty.
Seal Minder® and Fahrenheit® are registered trademarks of Industrial Flow Solutions Operating, LLC. All rights reserved.
© 2020 Industrial Flow Solutions Operating, LLC. All rights reserved.