Chapter 5—Coro-Flo
®
Seal Replacement Instruction
1. Please note these important Safety Tips
Periodic inspection and maintenance of the pump
is essential.
Inspection, maintenance, and installation of the pump
must be performed by trained personnel.
All procedures must comply with the Corken Installation,
Operation & Maintenance manual, applicable local
codes and safety standards.
The transfer of toxic, flammable, or explosive
substances is always at the user’s risk.
Equipment should only be operated by qualified personnel
according to applicable codes and safety standards.
Listed below are some written instructions for replacing
the seal assembly on all C-, DL-, DLF-, DS-, DSF-, F-,
and FF-model regenerative turbine pumps. A video
presentation is available on Corken’s website (see
Resources/Training Videos) and YouTube channel.
2. The model number of the pump is located on a name
plate on top of the pump casing.
If there is not a nameplate on the unit, there is a
stamped number on the cover and on the back of the
casing that indicates the model number.
This pump is a model C12. 9 would be a model 9, 0 is
a model 10, 2 a 12, 3 a 13, 4 a 14, and 5 is a model 15.
3. Note the direction of the rotation arrow on the front of the
pump cover. This is important to know when installing
a three phase motor such as the one used on model
C14 and all DL-, DLF-, DS-, DSF-, F-, and FF-models.
The motor can be wired to turn in a clockwise or
counterclockwise direction, so make sure it is wired to
match the direction of the rotation arrow when installing
a new motor. This wiring instruction does not apply to
the small C model motors of 2 horsepower or less since
they are wired to run one direction only.
4. All standard Coro-Flo regenerative turbine pumps use
the seal replacement kit 113-CXA. The letter at the
end of the part number indicates the O-ring material.
A is the standard configuration and indicates Buna-N.
Optional O-ring material is available and indicated
with a B for Neoprene, D for Viton, E for PTFE, G for
Ethylene-propylene, and K for Kalrez.
5. The boxed seal replacement kit includes:
• Important Instructions
• The stationary metal seat
• The rotating carbon with the seal sleeve assembly
and spring
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