Advantage Sentra SK Series, Instruction Manual

Page: 52 / 70

Temperature Control Units : Sentra with VE Series Instrument
Page: 52
Advantage Engineering, Inc.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
www.AdvantageEngineering.com
6.1 MECHANICAL SYSTEM
A. MOTOR/PUMP ASSEMBLY. The unit pump is a multi-
component assembly serving to circulate water through
the process system. The pump will increase the system
pressure between 35 - 50 PSI over the plant water
supply pressure. The pump is driven by an electrical
motor.
1. Pump casing. The pump casing is an exclusive
design. The casing is cast of iron and flanged to
accept the heater/discharge and cooling tanks.
The casing is the support element in the pump/
motor assembly and is secured to the unit base.
2. Pump adapter. The pump adapter is the mating
element between the pump casing the electric
motor. The adapter is machined to accept the
pump seal flush line. The stationary pump seal
member is set in the seal cavity of the pump
adapter.
3. Electrical motor. The electric motor is a dual
voltage, 3 phase, ODP motor. The motor serves
to turn the pump impeller creating process flow.
4. Impeller. The impeller is custom designed for
the unit and creates the higher flow (gpm) from
standard HP ratings.
5. Pump Seal. The pump seal prevents water
leakage from the pump adapter. The seal is
made up of three items: The stationary member
(seated in the seal cavity), the rotating member
(placed on the motor shaft) and the tension
spring.
6. Pump seal flush. The pump seal flush is a flow
diverter which serves to “cleanse” the pump seal
assembly of debris which may lodge on the seal
and create a leak.
B. HEATER. The heater is a dual voltage, flange mounted
immersion heater set in the pump discharge cylinder. The
heater elements have a stainless steel sheath. Electrical
supply to the heater is provided via a mercury contactor.
C. HEATER/PUMP DISCHARGE CYLINDER. The heater/
pump discharge cylinder is a custom cast tank. The
tank is flanged mounted to the pump casing. Reinforced
machined bosses accept the “to process/high temperature limit” sensor probe and the “to
process” connection.
Electric Motor
Pump Casing
Pump Adapter
Stationary member
Seal flush tube
Impeller