Spare Parts; Recommended Spares; Tools Required - Flowserve Durco Mark 3 Installation, Operation & Maintenance Manual

For food grade grease the grease change and
relubrication intervals are half those of the conventional
greases.
The characteristics of the installation and severity of
service will determine the frequency of lubrication.
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals.
The bearing temperature may be allowed to rise to
55 ºC (99 ºF) above ambient, but should not exceed
95 ºC (204 ºF).
Never mix greases containing different
bases, thickeners or additives.
6.2.4 Mechanical seals
When leakage becomes unacceptable the seal [4200]
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.

6.3 Spare parts

6.3.1 Ordering of spares
Flowserve keeps 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 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.
Page 28 of 52
DURCO MARK 3 ISO FRAME MOUNTED ENGLISH 85392719 06-12

6.4 Recommended spares

For two years operation (as per VDMA 24296).
Part
no.
2200
2100
3712.1
2400
3011
3013
4590.1 * Gasket
4610.1
4610.2
2540
4130
4134
4200
4305
-
* Note: for recessed impeller version replace with the following part:
4590.1
Additional spares for keyed impeller option
2912.1 /
2912.2
4610.4
4610.5
6700.2

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:
•
Open ended spanners (wrenches) to suit up to
M 48 screws/nuts
•
Socket spanners (wrenches), up to M 48 screws
•
Allen keys, up to 10 mm (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.)
•
Coupling grip/shaft spanner
Number of pumps
Designation (including stand-by)
2 3
Impeller 1
Shaft 1
Bearing locknut 1
Sleeve (if fitted) 2
Radial ball bearing 1
Thrust bearing 1
4 6
O-ring 4 6
O-ring 4 6
Deflector 1 2
Gland packing 2
Lantern ring 1 2
Mechanical seals 1 2
V-ring 1 2
Power end - -
Gasket 8 12
Impeller nut 1
O-ring
2
(if sleeve fitted)
O-ring 4 6
Key 1
4 5 6/7 8/9 10(+)
2 3 30%
2 3 30%
2 3 4 50%
3 4 50%
2 3 4 50%
2 3 4 50%
8 9 12 150%
8 9 12 150%
8 9 10 100%
3 30%
3 4 40%
3 30%
3 30%
3 30%
- - - 1 2
16 18 24 300%
2 3 30%
3 4 50%
8 9 12 150%
2 3 30%
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