Transcript Thermal Protector

Welcome to training on Submersible Pumps
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Submersible Pumps
Single Phase Models
Three Phase Models
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The Basics
What are Submersible Pumps
Where are they used
Who uses them
Why use Submersible Pumps
When to use Submersible Pump
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What is a Submersible Pump
A submersible pump is typically a bottom suction,
single stage centrifugal pump directly mounted on
the shaft of a submersible motor
Motors can be electric, hydraulic or pneumatic
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Where are they used ?
Anywhere water is and needs to be removed
Sand and Gravel Pits
Quarries
Dewatering well applications
Manhole dewatering
Coffer dams
Excavations
Construction sites ( all phases)
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Who uses Submersible Pumps
General contractors
Municipalities
Utilities
Landscapers
Rental stores
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Why use a Submersible Pump
Advantages
No suction hose or suction lift to
calculate
Instant priming
High discharge head or high flow
Little attention required
Small investment for large capacity
Few parts, low repair & service costs
Runs dry for a short time
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Disadvantages
External power source
required
Lower volume compared to
trash pumps
Must be pulled out for
inspection
Small solid size capacity
When to use a Submersible Pump
Anywhere pumping head requirements exceed that of a
trash pump
Environments where an internal combustion engine is
not desired or allowed
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Electric Submersible Pump
Nomenclature
P
= Pump
S
= Submersible
A
= Automatic
2, 3, 4
= Discharge port size in inches
400-1100
= motor wattage
last digit
= Phase either 0 (1Ø) or 3 (3 Ø)
HH
= High Head
HF
= High Flow
Example: PS411003HF
Pump Submersible 4” 1100watt 3 Phase motor with High Flow
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Submersible Pump Models
PS2-400
PS2-500
PSA2-500
PS2-750
Single Phase
PS3-1500
120 & 240 VAC Switchable
PS3-2200
240 VAC
Available in 120 or 240 volt models
except for PSA2-500 which is 120 volt only.
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Submersible Pump Models
PS2-1503
PS2-2203
PS2-3703
PS3-1503
PS3-2203
PS3-3703
Three Phase
PS4-3703
PS4-5503
PS4-7503
PS4-1103HH
PS4-1103HF
PS3-5503
Available in
240, 480 & 575 volt models
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Pump Components
Discharge
Outer Housing
Volute &
wear plate
Intake strainer
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Motor Housing
Mechanical Seal
Oil Chamber
Impeller
Pump Components
Power
Cable
Circle
Thermal
Protector
Stator
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Handle
Capacitor
Rotor
Power Supply Cable
0.5 - 5 HP Pumps
Molded Cable Boot
Limited Tightening Plate
Anti-Wicking Block
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Power Supply Cable
5 HP & larger Pumps
Thermal expansion cable boot.
Cable Gland compresses
the cable boot a full 360°
Upper Chamber
Insures an area around
the thermal expansion
boot allowing it to expand
freely without contacting
the cast iron walls.
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Extends the bending radius of
the power cable and prevents
kinking at the entry point
To prevent wicking each
conductor is stripped
back exposing the copper
conductor,then fed
through a fiber conductor.
Epoxy is then poured into
the expansion boot
Thermal Protector “CTP”
Circle Thermal Protector
Movable Contacts
Snap Acting
Disk
Heater
Housing
Stationary
Contacts
Terminals
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Calibration Nut
Thermal Protector “MTP”
MTP
( Miniature Thermal
Protector)
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Miniature Thermal Protector
(expanded view)
1) Neoprene coated leads
5) Stationary Silver Contact
2) Epoxy sealing compound 6) Movable Silver Contact
3) Plated steel casing
7) BI-Metal Strip
4) Ceramic insulator
8) Mylar sleeve
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Mechanical Seal
Carbon/Ceramic
Sealing
Faces
Spring mechanism
Internal seals
Silicon Carbide
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Oil lifter system
Exclusive design
Enables the pump to be run
with only a 1/3 of the oil
with-out damage to the seal.
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Oil lifter system
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V - ring seal
Bottom of the
Mechanical Seal Face
V-Ring (on Stainless
Shaft Sleeve)
Shaft Sleeve
Impeller
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Lip Seal
Another form of
seal is the lip seal.
This stationary seal
is mounted below
the bottom of the
mechanical seal
faces.
The impeller hub
rotates against the
flexible lip of the lip
seal.
All three phase units have lip seals
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Maintenance
Every use or weekly
Visual inspection
6 months / 1000 hours
Oil inspection
Power cord check
Amp draw check
Monthly
Inspection of
Strainer
Impeller
Wear plate
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Yearly / 2000 hours
Oil change
Pump overhaul
O-rings, seals
Mechanical seal inspection
This completes the submersible pump section
Thank you
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