EBARA 2 CDX - Manual (Page 15)

Model CDU, CDX, 2CDU, 2CDX Ebara End Suction Centrifugal / Two-stage Centrifugal
instructions and Operation
Ebara Fluid Handling
www.pumpsebara.com 15
(t) 803 327-5005 • (f) 803 327-5097 rev. 12/10
Position the pump on its end with the shaft up. The work surface should be level, capable of supporting the motor.
Make certain the motor is not connected to a power source. Do not install or assemble the pump on a motor
connected to a power source. Serious injury could occur if the motor activates during pump assembly.
Assembling the Pump
1. Position the motor bracket on the motor with the mounting feet toward the motor. Cross-tighten bolts to factory recommended
torque of 6 ft. lbs.
2. Using finger pressure only, firmly press the stationary seal seat into the casing cover. Press the seat until it evenly bottoms
out in the seat cavity.
3. be careful not to damage the stationary seal.
a. Position the casing cover over the the motor shaft.
b. align the casing cover holes with the motor bracket holes.
c. Firmly press the casing cover into position. (Casing cover may need to be tapped into place by using a rubber mallet.)
4. Ensure all seals have good contact.
a. Carefully press the rotating seal assembly onto the motor shaft. Ensure the face of the seal assembly has solid, square
contact with the stationary seal seat.
b. The seal retainer must seal against the motor shaft.
c. Position the seal spring and seal washer. CDX pumps do not require seal spring washers.
5. Failure to properly install the impeller and the impeller nut could result in the impeller spinning off the shaft in three
phase applications (when the motor may start in reverse rotation).
For CDU pumps:
a. While holding the seal spring in place, thread the impeller clockwise onto the motor shaft.
b. Use a screwdriver to hold the motor shaft stationary. Turn the impeller on the shaft until it spins down and bottoms out.
Make certain that the impeller is firmly bottomed and sealed.
c. Install the impeller nut onto the shaft in the same manner as the impeller was installed. Make certain the impeller nut
is firmly sealed against the impeller. apply lock tite to the impeller nut before installing.
For CDX pumps:
a. Position key in keyway on shaft
b. Slide impeller onto shaft
c. Tighten impeller nut.
6. Position the Viton O-ring over the casing cover. Do not cut nick or damage the O-ring during installation.
7. The discharge can be positioned in the direction desired.
a. Position the pump volute casing over the casing cover.
b. rotate the discharge to the desired direction.
c. align the bolt holes and secure the case to the casing cover with lock washers and cap screws.
d. Cross tighten the bolts to 3.4 lbs (factory recommended torque). Overtightening may result in stripping of the motor
bracket threads.
8. Position the mounting base on the pump and secure with cap screws.
9. Place the bolt and lock nut on the back of the mounting base. adjust the bolt height to support the motor and
tighten the lock nut to secure the bolt height.
10. rotate the impeller to ensure proper alignment.
CDU/CDX assembly instructions
Warning