Flowserve Twin Screw Rotary User Manual

Page 55

TWIN SCREW PUMPS. ORIGINAL USER INSTRUCTIONS. ENGLISH. 71569243 – 07/10

Page 52 of 53

8.2 General Arrangement Drawing

The typical general arrangement drawing and any
specific drawings required by the contract will be sent
to the Purchaser separately unless the contract
specifically calls for these to be included into the User
Instructions. If required, copies of other drawings sent
separately to the Purchaser should be obtained from
the Purchaser and retained with these User
Instructions.

9 CERTIFICATION

Certificates, determined from the contract requirements
will be provided with this manual. Examples are
certificates for CE marking and ATEX marking. If
required, copies of other certificates sent separately to
the Purchaser should be obtained from Purchaser for
retention with the User Instructions. See section 1.9
Noise level, for details of typical noise certification.

10 OTHER RELEVANT DOCUMENTATION
AND MANUALS

10.1 Supplementary User Instruction
manuals

Supplementary instruction determined from the contract
requirements for inclusion into User Instructions such
as for a driver, instrumentation, controller, sub-driver,
seals, sealant system, mounting component etc are
included under this section. If further copies of these
are required they should be obtained from the
purchaser for retention with these User Instructions.

Where any pre-printed set of User Instructions are
used, and satisfactory quality can be maintained only
by avoiding copying these, they are included at the end
of these User Instructions such as within a standard
clear polymer software protection envelope.

10.2 Change notes

If any changes, agreed with Flowserve Pump Division,
are made to the product after its supply, a record of the
details should be maintained with these User
Instructions.

10.3 Additional sources of information

Reference 1:
NPSH for Rotordynamic Pumps: a reference guide,
Europump Guide No. 1, Europump & World Pumps,
Elsevier Science, United Kingdom, 1999.

Reference 2:
Pumping Manual, 9

edition, T.C. Dickenson,

Elsevier Advanced Technology, United Kingdom, 1995.

Reference 3:
Pump Handbook, 2

edition, Igor J. Karassik et al,

McGraw-Hill Inc., New York, 1993.

Reference 4:
ANSI/HI 1.1-1.5
Centrifugal Pumps - Nomenclature, Definitions,
Application and Operation.

Reference 5:
ANSI B31.3 - Process Piping.

11.0 OPTIONAL EQUIPMENT AND
ARRANGEMENTS

11.1 Jacketed components

For pumps equipped with jacketed bodies and/or
stuffing boxes, the maximum allowable jacketed
pressure is 8.6 bar (125 PSIG) for steam or other
gaseous heat transfer media and 10.3 bar (150 PSIG)
for liquid heat transfer media (Dowtherm, Therminol)
unless otherwise specified on contract drawings. On
jacketed bodies, using steam, the inlet connection
should be at the highest connection on the body with
the outlet at the lowest connection on the opposite end
and side. This should be reversed when using a liquid
heat transfer medium.

It is the user's responsibility to

ensure the normal steam temperature does not exceed
the defined maximum permitted value for the particular
Temperature Class.

There are two styles of jacket available, the integral
type and the bolt on type. The integral type need only
be connected as described whereas the bolt on type
must be installed per instructions using the heat
transfer cement supplied. Failure to do this will result in
uneven heat distribution within the pump and may lead
to premature failure.

11.2 Vertical mountings

All fasteners used on the pump and on the baseplate of
a vertically mounted unit should be assembled using
LOCTITE 242 (blue) or equal. This is necessary to
prevent the fasteners from vibrating loose, falling into
sump and possibly being drawn into the pump causing
internal damage.