EBARA EVMU - Manual (Page 13)

Ebara Stainless Steel Vertical Multistage EVMU
Instructions and Operation
Ebara Fluid Handling
www.pumpsebara.com 13
(t) 803 327-5005 • (f) 803 327-5097 rev. 11/10
(2) Carefully relieve the pressure in the pump by opening the vent or drain plugs.
(3) remove the motor as detailed in Section 6A.
(4) remove the pump coupling bolts (120/5) and remove the coupling.
(5) remove shaft pin (131-1).
(6) remove the 4 socket head screws (120-3) from the stationary mechanical seal seat (111-3).
remove the seal seat and stationary seal. Press the old stationary seal assembly out of the
stationary seal housing (111-3) The stationary seat is rubber o-ring mounted.
NOTE: EVMU32 1 will have a cartridge type mechanical seal. The rotating and stationary pieces
of the seal will all be removed in this step, proceed to step 20.
(7) Loosen and remove four tie rod nuts (128-1).
(8) Gently tap upward on the base of the motor bracket (162) with a soft mallet to loosen the fit.
remove the motor bracket.
(9) remove the old rotating seal assembly by lifting vertically off the pump shaft.
Do not remove the shaft sleeve that is below the rotating assembly.
(10) remove the outer casing (007), remove the o-rings (115-1) from the top and bottom of the outer
casing.
(11) Slide the rotating seal assembly onto the shaft taking care not to scratch or touch the seal face.
Apply a small amount of non-petroleum based lubricant on the inside of the rotating assembly.
(i.e. dish soap, or Dow Corning #4 lubricant or similar). If touching the seal face is necessary,
gently wipe with a clean soft tissue.
(12) Push the assembly into place on the shaft, seating the rubber boot snugly.
(13) Carefully, press the stationary seal assembly into the stationary seal housing (111-3) Be sure
that the stationary seal is evenly seated.
(14) 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.
(15) Place the outer casing (007) over the entire assembly and into the bottom casing (006). The
outer casing 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).
(16) 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 at the top of the outer casing (007).