Flowserve 2564 Mixerpac - Manual (Page 4)

4
The fluid must always be present at the seal gaps, so that a seal film can be
generated. The seal film exists when the shaft is stationary.
The seal faces of the seal rings and the mating rings are separated from each other
by the film during shaft rotation and function without contact and wearing under
these conditions.
The choice of the barrier or the quench fluid depends on the respective use and must
be matched to the affected systems. In all cases a clean barrier or quench fluid must
be used.
The consumption of the barrier or the quench fluid depends on the respective operat-
ing data. The consumed quantity of barrier or quench fluid enters the product through
the product-side seal gap and the atmosphere through the atmospheric-side seal gap,
where it is drawn off through connection C.
!
The product pressure may not exceed the values given under item 1.1.
1.6 Function conditions
The MIXERPAC’s function is obtained only when the following conditions are fulfilled:
• Filtered barrier or quench fluid (filter mesh < 5 µm) supplied at connection A.
• Plane-lapped seal faces.
• Perpendicularity between the seal faces and the shaft centerline.
• Unforced clearance of the rotating parts within the specified tolerances.
• Prevention of sedimentation on the surfaces of the shaft or shaft sleeve by e. g.
crystalliation or polymerisation.
• Prevention of the product from adhering in the area at the seal gaps.
• Permanent fluid film in the seal gaps.
• Adherence to the specified operating data as per item 1.1 respectively the data
sheet.
If these function conditions are not fulfilled, the consumption of barrier or quench
fluid is increased and parts of the product can escape into the atmosphere.
Additionally, disregarding of these issues can result in high component temperatures.
!
See the Directive 94/9/EC. EN 13463, Part 1 - 8.
2.0 Information on Safety
2.1
DANGER: This symbol means, that failing to observe this information involves
the risk of personal injury and / or considerable damage to property.
!
IMPORTANT: This symbol draws your particular attention to important information
that is possibly not clear even to qualified personnel. This informa-