Flowserve MARK 3 GROUP 4 - Manual (Page 33)

MARK 3 GROUP 4 USER INSTRUCTIONS ENGLISH 71569286 08-12
Page 33 of 48 flowserve.com
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6.2.4 Mechanical seals
No adjustment is possible. When leakage reaches
an unacceptable level the seal will need replacement.
6.2.5 Gland packing
The stuffing box split gland can be completely
removed for re-packing or to enable the addition of
extra rings of packing.
The stuffing box is normally supplied with a lantern
ring to enable a clean or pressurised flush to the
centre of the packing. If not required, this can be
replaced by an extra 2 rings of packing.
There must always be a small leakage; normally a
minimum of 120 drops per minute to atmosphere to
lubricate and cool the packing is required.
Gland packing must not be used when pumping
hazardous liquids.
6.3 Spare parts
6.3.1 Ordering of spares
Flowserve keep records of all pumps that have been
supplied. When ordering spares the following
information should be quoted:
1) Pump serial number
2) Pump size
3) Part name – taken from section 8
4) Part number – taken from section 8
5) Number of parts required
The pump size and serial number are shown on the
pump nameplate.
To ensure continued satisfactory operation,
replacement parts to the original design specification
should be obtained from Flowserve.
Any change to the original design specification
(modification or use of a non-standard part) will
invalidate the pump’s safety certification.
6.3.2 Storage of spares
Spares should be stored in a clean dry area away
from vibration. Inspection and re-treatment of
metallic surfaces (if necessary) with preservative is
recommended at 6 monthly intervals.
6.4 Recommended spares and
consumable items
For start-up purposes:
1 - complete set of gland packing
2 - shaft sleeves
1 - set of gaskets and seals
(optional: 2 - mechanical seals)
For 2 years operation:
1 - set of bearings (line and thrust)
2 - sets of gland packing
2 - shaft sleeves
2 - sets of gaskets and seals
2 - lantern rings
2 - casing wear rings
(optional: 2 - mechanical seals
2 - impeller wear rings)
For 4 years operation:
1 - set of bearings (line and thrust)
2 - sets of gland packing
2 - shaft sleeves
2 - sets of gaskets and seals
2 - lantern rings
2 - casing wear rings
1 – impeller (optional: 2 - mechanical seals)
6.5 Tools required
A typical range of tools that will be required to
maintain these pumps is listed below.
Readily available in standard tool kits, and dependent
on pump size:
All pumps are built with inch fasteners:
• Open ended spanners (wrenches) to suit up to
1-7/8” screws/nuts
• Socket spanners (wrenches), up to 1-7/8” screws
• Allen keys, up to 3/8” (A/F)
• Range of screwdrivers
• Soft mallet
More specialized equipment:
• Bearing pullers
• Bearing induction heater
• Dial test indicator
• C-spanner (wrench) - for removing shaft nut.
(If difficulties in sourcing are encountered,
consult Flowserve.)