Flowserve 2564 Mixerpac - Manual (Page 3)

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Mixerpac 2564 - Installation and Maintenance Instruction for Machinery Parts
in both directions, i. e. it seals both from the product side and from the barrier fluid
side. In the event of loss or of variations the product-side mechanical seal remains
closed (safety case).
Up to a pressure difference of
Δp = 6 bar the MIXERPAC can be run with an unpres-
surized quench fluid (no danger of dry friction when the lubricating film ruptures).
1.4 Integrated bearing
!
The integrated bearing is a floating bearing for the mixer shaft and undertakes
radial guiding tasks only.
!
The installed bearing was designed for the loads (e. g. generated by speed,
speed changes, changes in load, thermal expansion of the shaft or housings)
when the MIXERPAC is run in accordance with these instructions. The applica-
tion limits under item 1.1 must be observed to prevent damage to the bearing.
!
The installation chamber for the MIXERPAC must be checked against the corre-
sponding drawing and table of dimensions so that the bearing is subjected only
to the loads generated by operations in accordance with these instructions. It
must be ensured that all dimensions, surface qualities and tolerances (e. g. con-
centricity, runout, fits) are observed. The specifications under e. g. ISO 21049
or API 682, DIN 28161, FLOWSERVE publications FSD101 respectively FSD127
must be observed.
!
Observe the maintenance intervals and relubrication times for the bearing under
the items 10.2 respectively 10.3, so that the installed bearing is supplied with
the optimum quantity of lubricant.
!
The installed bearing must be replaced once unacceptable wearing has been
established during the maintenance intervals for the whole machine, yet no later
than five years after the last installation / replacement.
!
Packing rings must be used to prevent fluids and solids from penetrating the
installed bearing.
1.5 Function
The barrier medium introduced in the barrier chamber must exhibit a pressure of 1-2
bar higher than the product in the mixer vessel.
!
The product pressure may not exceed the values given under item 1.1.
!
Up to a pressure difference of Δp = 6 bar the MIXERPAC can be run with an
unpressurized quench fluid (no danger of dry friction when the lubricating film
ruptures).
This causes the barrier fluid to form a seal film in the seal gaps, preventing product
from escaping into the atmosphere.