EBARA EVMU - Manual (Page 19)

Ebara Stainless Steel Vertical Multistage EVMU
Instructions and Operation
Ebara Fluid Handling
www.pumpsebara.com 19
(t) 803 327-5005 • (f) 803 327-5097 rev. 11/10
(6) Carefully install the new cartridge seal over the pump shaft and into the top of the pump being
sure that it is firmly seated. re-install the four retaining bolts (120-3) that secure the cartridge
seal to the pump and tighten the three setscrews in the locking collar.
(7) reinstall the spacer coupling. Thread the hex head bolts (120-5) back through the top of the spacer
coupling loosely so it is supported but do not fully tighten. Be sure that the cross key is aligned
with the keyway in the bearing assembly above. Spin the spacer coupling so that hole in the
pump shaft is aligned with hole in the rear of the spacer coupling.
(8) reinstall the shaft pin (131-1) through the hole in the pump shaft making sure that it seats in the
blind hole in the back of the spacer coupling. Once the locking pin has been installed and the
pump shaft and spacer coupling are engaged via the locking pin, install the front half of the
spacer coupling and install the two socket head bolts (120-6) that secure it.
(9) Firmly tighten the four hex head bolts (120-5) that secure the spacer coupling to the upper
coupling and bearing assembly above being sure that the drive key is positioned correctly so
that these parts are properly engaged with each other.
The working length of the seal is set by completion of this step. There is no other adjustment
that needs to be made to the seal.
(10) reattach the coupling guards to each side of the pump and then reinstall the motor to complete.
(11) See Section 5B for motor installation.
7F – replacing the Mechanical Seal and Hydraulic assembly
EVMU 32 3 – EVMU32 10-1
EVMU 45 2-1 – EVMU 45 7-2
EVMU 64 1 – EVMU 64 4
(1) Complete step 1- step 5 from section 7E.
(2) remove the tie rod nuts and washers. The cast iron motor stool (163) and upper bearing assembly
can now be removed.
(3) remove the outer casing (007). remove the o-rings (115-1) from the top and bottom of the outer
casing.
(4) Lift the replacement hydraulic assembly and place it onto the pump casing (006) ensuring that it
is seated properly. The bottom impeller should slip into the casing wear ring.
(5) Using a new outer casing o-ring (115-1) apply a light film of lubricant such as Dow corning #4 or
similar to the o-ring and place it in the lower o-ring groove in the outer casing (007). Ensure that
it is seated smoothly and evenly in the groove.
(6) Place the outer casing (007) over the entire assembly and install it into the bottom casing (006).
The outer casing (007) may not seem to seat at this time, but the tie rods will be tightened in a
later step, which will complete the seating of the outer casing (007).
(7) Using a new outer casing o-ring (115/1), apply a light film of lubricant such as Dow Corning #4,
or similar, to the o-ring and place it into the o-ring groove on the upper pump body (007) ensuring
that it is seated smoothly into the o-ring groove.