Teikoku USA | Chempump
Instruction Manual HE-10677-P (1018)
24
DECONTAMINATION CERTIFICATION
AND FLUSHING PROCEDURE
Page
3
of
3
REV.
4-
17-20
D. For all Teikoku pumps, LE stators, G and NC stators with TRG.
If a stator liner rupture is suspected, follow this section to flush the stator cavity. Caution: if this
step is followed, the motor must be rewound.
There might be a case in which pressure is released when terminal box cover or terminal plate is
removed. Take the necessary precautions and follow Teikoku’s terminal box removal procedure,
that is available upon request. With the terminal box up, remove the cover and the terminal plate.
Drill a hole through the stator liner on the opposite end of the stator.
Position the stator assembly with the rear end bell up and introduce an appropriate neutralizing
fluid through the junction box port. The fluid will exit through the drilled hole in the opposite end.
Flush the stator cavity for a sufficient time to allow for the removal of all process fluid. After
washing is completed, drain all the fluid.
Remove as much of the neutralizing fluid as possible by purging the stator with compressed air or
inert gas for 3 – 5 minutes. If the terminal box and terminal plate are to be returned, assure that all
components have been decontaminated.
NOTE ON DECONTAMINATION:
TEIKOKU USA RESERVES THE OPTION TO RETURN PUMPS, AT THE CUSTOMER’S
EXPENSE,
IF THEY HAVE NOT BEEN PROPERLY DECONTAMINATED.
C. NC-series stator assembly without TRG
If a stator liner rupture is suspected, follow this section to flush the stator cavity. Caution: if this step
is followed, the motor must be rewound.
Drill a hole through base cradle mounting hole located in rear end bell, drill this hole just deep
enough to break through end bell. Drill a second hole through stator liner on the opposite end of the
stator.
Position the stator assembly with rear end bell up and introduce an appropriate neutralizing fluid
through drilled hole in rear end bell. The fluid will exit through the drilled hole on opposite end. Flush
the stator cavity for a sufficient time to allow for the removal of all process fluid.
Remove as much of the neutralizing fluid as possible by purging the stator cavity with compressed
air or inert gas for 3 - 5 minutes.
If the connection box is to be returned, assure that all components have been decontaminated.
Decontamination Form pg. 3
