Flowserve 955 Chemiepac - Manual (Page 7)

Installation, Operating and Maintenance Instructions Chemiepac Mechanical Seal
6.0 INSTALLATION
6.1 Observe the machine manufacturer’s specifications and the following information
when installing the MS in the machine.
The machine to take the MS must be earthed in accordance with the applicable
regulations for electrical installations (e.g. VDE rules) to conduct away any
electrostatic build-up and so prevent spark formation.
6.2 The mating ring with the installed flat gasket must be pressed into the mating ring
mount uniformly by hand or under a press. The seal face is protected with a lapped
plate or the seal ring. Use oil or grease as a lubricant (see Item 5.7).
Tighten the cover uniformly and flatly.
Under no circumstances may O-rings of EP rubber come into contact with
mineral oil or grease (see item 5.7).
6.3 Push the spring-loaded unit (items 1 - 3, 6-[14] 15 ) on the shaft or shaft sleeve.
Displace the drive (item 9) until the setting dimension is obtained, and bolt firmly to
the shaft or shaft sleeve with (item 8).
Max. tightening torques (Nm) for item 8:
Thread (mm) For material: 1.4571 / 2.4610
M5 2.3
M6 5
M8 9
M10 17
M12 51
When the shaft is of e.g. PTFE, PP, or elastomers the drive (9) must be se-
cured in addition along the axis (packing gland).
After tightening the drive, the installation plates must always be removed.
Components provided by the customer for installing the MS, e.g. the pump
cover or fastening bolts, must exhibit adequate properties and dimensions. It
must not be possible to overstress these components, e.g. the max permitted
tightening torque must not be exceeded.
6.4 To reduce friction forces during installation the shaft or shaft sleeve is lubricated
with a thin coat of oil or grease in the area of the dynamic sealing element (see
Item 5.7).
6.5 Conduct a static pressure test. Do not exceed the max pressures under item 1.1.
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