Flowserve Durco Mark 3 User Manual

DURCO MARK 3 ISO FRAME MOUNTED ENGLISH 85392719 06-12
Page 28 of 52 flowserve.com
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.
6.4 Recommended spares
For two years operation (as per VDMA 24296).
Part
no.
Designation
Number of pumps
(including stand-by)
2 3 4 5 6/7 8/9 10(+)
2200 Impeller 1 2 3 30%
2100 Shaft 1 2 3 30%
3712.1 Bearing locknut 1 2 3 4 50%
2400 Sleeve (if fitted) 2 3 4 50%
3011 Radial ball bearing 1 2 3 4 50%
3013 Thrust bearing 1 2 3 4 50%
4590.1 * Gasket 4 6 8 9 12 150%
4610.1 O-ring 4 6 8 9 12 150%
4610.2 O-ring 4 6 8 9 10 100%
2540 Deflector 1 2 3 30%
4130 Gland packing 2 3 4 40%
4134 Lantern ring 1 2 3 30%
4200 Mechanical seals 1 2 3 30%
4305 V-ring 1 2 3 30%
- Power end - - - - - 1 2
* Note: for recessed impeller version replace with the following part:
4590.1 Gasket 8 12 16 18 24 300%
Additional spares for keyed impeller option
2912.1 /
2912.2
Impeller nut 1 2 3 30%
4610.4
O-ring
(if sleeve fitted)
2 3 4 50%
4610.5 O-ring 4 6 8 9 12 150%
6700.2 Key 1 2 3 30%
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

Flowserve Durco Mark 3 Specifications

General

Brand	Flowserve
Model	Durco Mark 3
Category	Water Pump
Language	English