BRONZE PEDESTAL RUBBER IMPELLER PUMP MODEL N200M

BRONZE PEDESTAL RUBBER IMPELLER PUMP MODEL N200M
MODEL
N200M
BRONZE PEDESTAL
RUBBER IMPELLER PUMP
PIPE SIZE 3/8”
PERFORMANCE
Capacity Water at 60o F
FEATURES
• Bronze Construction
• 3/8” Suction and Discharge Ports
• Mechanical Carbon Ring, Ceramic Face Main
Pump Seal Standard, Optional Buna N Lip Seal
• Two Sealed Ball Bearings Spaced for Maximum
Load Ability
• Drain Openings Separate Seal
& Bearing Areas
• Neoprene Impeller Standard
• Stainless Steel Shaft
• Machined-in Cam
APPLICATIONS
• MARINE
- Engine cooling
- Bilge
- Water Circulation
- Ballast Transfer
- Wash-down
• INDUSTRIAL
- Mixing
- Liquid circulation
- Sump drainage
ROTATION
Direction of shaft rotation determines inlet and outlet
ports (see line drawing)
MOUNTING
Pump will operate satisfactorily when mounted in any
position. DO NOT RUN DRY. Rubber impeller pumps generate high rubbing friction unless lubricated by liquid pumped.
Lack of liquid will cause impeller to burn up.
DRIVE
Either direct drive with flexible coupling or pulley drive
can be used. Make sure both flexible coupling halves are
properly aligned. When using pulley, do not overtighten belt.
www.oberdorfer-pumps.com
LIQUIDS AND TEMPERATURE
Liquids compatible with neoprene can be pumped including
fresh and salt water solutions and mild chemicals. Do not pump
severe solvents or acids. When possible, flush pump with fresh
water after each usage.
Extremes of cold and heat will affect impeller life. Limits of
40o to 140o F should be observed. Do not allow liquid in pump to
freeze. Drain pump by loosening cover screws. Use methyl alcohol
based anti-freeze compounds.
SUCTION LIFT
Suction lift of 15 feet is possible when impeller is wet. Suction
lines must be air tight in order for pump to self prime. A foot valve
at beginning of suction line is recommended.
IMPELLER REPLACEMENT
The impeller must be replaced if it is worn out or has been
damaged by debris or by running the pump dry. Symptoms of a
defective impeller are low pumping pressure and low flow causing
overheating of the engine. Poor pump performance can also be
caused by slippage of V-belts, so belts should be checked for tightness.
To replace the impeller remove screws and cover. Pull out the
impeller with nose pliers or two screwdrivers. Be careful not to dent
the pumping chamber with these tools. When inserting new
impeller, line pin in impeller with the slot in the shaft. Use oil on shaft
and avoid forcing the impeller onto the shaft.
(continued on back)
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
MODEL
N200M
BRONZE PEDESTAL
RUBBER IMPELLER PUMP
SECTION VIEW AND PARTS LIST
The impeller should also be removed for storage periods to prevent the blades from taking a permanent set.
SEAL REPLACEMENT
If water drips from the weep hole or from the area where the shaft
exits the pump, the seal is defective and must be replaced. Prolonged
running of the pump with a leaky seal can destroy the ball bearings
4/06
DIMENSIONS
resulting in catastrophic pump failure and engine shut-down.
For seal replacement, the pump must be removed from
the engine and disassembled in order to gain access to the
seal area. Where mechanical seals are used, both components (stationary and rotating member) must be replaced at
the same time.
Specifications are subject to change without notification.
www.oberdorfer-pumps.com
PHONE (800) 448-1668; (315) 437-0361
FAX (315) 463-9561
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