Flowserve Twin Screw Rotary - Manual (Page 29)

TWIN SCREW PUMPS. ORIGINAL USER INSTRUCTIONS. ENGLISH. 71569243 – 07/10
Page 26 of 53
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5 COMMISSIONING, START-UP,
OPERATION AND SHUTDOWN
These operations must be carried
out by fully qualified personnel.
5.1 Pre-commissioning procedure
5.1.1 Check-list
To avoid operational difficulties and to ensure a
trouble free initial start-up, the following additional
checks should be made.
1. Check that all piping has been properly bolted,
anchored and braced. If the system is
hydrostatically tested, ensure that the pump and
other equipment is properly vented and
adequately protected against excessive pressure.
(See Sections 4.11 Protection systems and 5.9.1
Venting the pump).
2. Flush the piping system, particularly the suction
line, to ensure that all foreign material has been
removed.
3. Check that all valves and automatic equipment
are operating properly.
4. Ensure that drivers are provided with properly set
over-load and/or overspeed protection devices as
required.
5. Check all auxiliary piping circuits.
6. Check that the gland nuts of a packed pump are
only finger tight and that the shaft can be turned
by hand.
5.1.2 Freezing
Precautions should be taken to prevent the liquid in
the pump or associated piping from freezing.
5.1.3 Lubrication
5.1.3.1 External bearing pump
Bearing lubrication is provided by lubricating oil
contained in housings located at both ends of the
pump.
Fill the bearing housings with the
correct grade of oil to the correct level, i.e. sight glass
or
constant level oiler bottle.
When fitted with a constant level oiler, the bearing
housing should be filled by unscrewing or hinging
back the transparent bottle and filling the bottle with
oil. Where an adjustable body Trico oiler is fitted this
should be set to the proper height.
The oil filled bottle should then be refitted so as to
return it to the upright position. Filling should be
repeated until oil remains visible within the bottle.
Other drivers and gearboxes, if appropriate, should be
lubricated in accordance with their manuals.
In the case of product lubricated
bearings the source of product supply should be
checked against the order. There may be
requirements for an external clean supply, particular
supply pressure or the commencement of lubrication
supply before pump start-up.
5.1.3.2 Internal bearing pump
Bearing lubrication is provided by the liquid being
pumped.
5.2 Lubricants
5.2.1 Typical oils
Company
Column “A” Column “B” Column “C”
Mobil Mobil DTE Oil BB MOBILGEAR 626 Mobil DTE Oil HH
Shell OMALA Oil 220 OMALA Oil 68 OMALA Oil 460
Sunoco SUNVIS 790 (220) SUNVIS 747 (46) SUNVIS 7150
Amoco RYKON Oil No. 220 AMOGEAR No. 68 American Industrial Oil No. 460
Texaco REGAL R&O 220 MEROPA 150 REGAL R&O 460
Arco PENNANT NL 220 PENNANT NL 68 RUBILENE 460
Chevron AW Machine Oil 220 EP Industrial Oil 46x NL Gear Compound 460
Exxon TERESSTIC N220 SPARTAN EP 68 TERESSTIC 460
*Esso TERESSO N220 SPARTAN EP 68 CYLESSO TK 460
Petro Canada GIREX 220 GIREX 68 GIREX 320
*Imperial Oil Limited (Canada)