N91_series_2011

N91_series_2011
MODEL
N91 SERIES
BRONZE ROTARY GEAR PUMPS
HIGH PRESSURE CARBONATOR MOTOR MOUNTED
PERFORMANCE
1/4” NPT PORTS
N91060GRC with internal
recirculation relief valve
1
N91060GKC with external
return relief valve
The rotary gear pump features an all bronze design and 303 stainless steel shafts with options of non-metallic gears and a variety of shaft
seals. The built-in relief valve is available in multiple options; internal recirculation to suction side or external connection for return line to supply
tank.
SUCTION LIFT
For a first start-up, the pump should be primed to avoid dry running.
Gear pumps are self-priming, but a foot valve with strainer is recommended at the beginning of the suction line. This will keep the gear chamber primed to insure instant flow when the pump is started. maximum suction lift is 20 feet. The suction line should be as short as possible.
FEATURES
• Bronze Body, Stainless Steel Shaft
• Buna N Mechanical Seal (Viton optional)
• Self-lubricating Carbon Bearings
• Carbonator Motor Mount
• Bronze Spur Gears
• 200 PSI capability
• Superior to Vane Pumps
GENERAL DESCRIPTION
The carbonator motor mounting uses a circular clamp,
similar to a hose clamp, as means of attaching the pump to a
specially machined hub on the motor. This concept was first
developed for the vending machine industry to pump carbonated beverages in soft drink dispensers. The main advantages
are compactness and economy due to the elimination of the
adapter casting. Carbonator motors are readily available from
electric motor distributors.
www.oberdorfer-pumps.com
LIQUIDS AND TEMPERATURE
Bronze pumps are suitable for water, oil, and mild chemicals in the
pH-range from 4-10. Viscous liquids may be handled with carbonator
pumps up to a viscosity of 300 SSU. Higher viscosities require a pump
speed lower than 1725 RPM, which is currently not available in carbonator motors.
Liquids containing abrasives, solids, powders or pigments are highly detrimental to pump life and must be avoided. The recommended liquid temperature range is from 32oF to 140oF. If more extreme temperature conditions exist, factory should be consulted. Allowing the liquid to
freeze in the pump can cause damage.
ROTATION AND RELIEF VALVE
The relief valve is not intended to be a metering or flow control
device. Its main purpose is to function as a discharge pressure relief
when the spring tension is exceeded by the discharge pressure.
Overheating can occur within 5-10 minutes if the discharge line is completely shut off for extended periods.
Unless otherwise specified, the pump motor unit is supplied by the
factory for shaft rotation clockwise from shaft end. Reversing the motor
rotation will reverse the “in” and “out” ports and also requires changing the
relief valve location. The relief valve is always on the discharge side in this
pump series. The factory pressure setting is 50 PSIG. To increase pressure, turn the relief valve adjusting screw in a clockwise direction. For
relief settings between 100-200 PSI, specify high pressure spring (N91D)
To reverse single phase motors, find instructions on the inside of
the junction box cover or on the name plate of the motor.
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
MODEL
N91 SERIES
BRONZE ROTARY GEAR PUMPS
HIGH PRESSURE CARBONATOR MOTOR MOUNTED
EXPLODED VIEW AND PARTS LIST
Integrated Relief Valve
Model
Poppet or
Ball
Ports
Seal
N91060GOC
1/4
Buna
N91060GKC
1/4
Buna
Poppet
Internal or
External*
Return
Spring
Low Pressure
None
External /
Right
Left
Valve
Position*
Rotation *
Right
Left
CW
CCW
CW
CCW
DIMENSIONS
N91060GEC
1/4
Buna
Poppet
Low Pressure
External /
Left
Right
Right
Left
N91060GRC
1/4
Buna
Ball
Low Pressure
Internal
Right
CW
N91060GLC
1/4
Buna
Ball
Low Pressure
Internal
Left
CCW
N91D
N9105
N91K
1/4
1/4
Viton
3/8
Notes: * facing pump shaft
High Pressure
(External Return Only)
Carbonator Style ODP Motors
Code
HP
Voltage
Frequency
Speed (RPM)
C33
C34
F02
F06
F12
1/4
1/4
1/3
1/3
1/3
115/230
115
115/230
115
230
60/50 HZ
60 HZ
60/50 HZ
60 HZ
60/50 HZ
1725 /1425
1725
1725 /1425
1725
1725 /1425
J01
1/2
115
60 HZ
1725
J39
M40
1/2
3/4
115
115/230
60 HZ
60 HZ
1725
1725
10/11
www.oberdorfer-pumps.com
Thermal
Overload
Auto
Auto
Auto
Auto
Auto
Manual
Reset
Auto
Auto
Part #
9630
9873
8876
9403
8520
2240
3150
3151
Specifications are subject to change without notice.
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement