Flowserve DMX User Manual

DMX/DMXD/DMXH/DMXD
H
USER
INSTRUCTIONS
ENGLISH
71569282
-
10/09
Page 28 of 60
5
COMM
ISS
IONI
NG
,
START-UP
,
OPERATION AND SHUTDOWN
Commissioning of all equipment must be
performed in accordance with specifications set forth
in Chapter 9,
Commissioning
from API
Recommended Practices 686/PIP REIE 686, First
Edition.
These operations must be carried
out by fully qualified personnel.
5.1
Precommissioning
procedure
a)
Never
operate
the p
ump w
ith
suction v
alve
closed.
b)
Never
operate pump
unless
it is
filled with
liquid
and vented.
c)
Never
operate the
pump un
less
a
liquid source
is
available.
d)
Never
operate
the
pump
without
proper
lubrication.
5.1.1
Pre-operational
checks
At initial start-up and after the equipment has been
overhauled:
a)
Ensure
pump
and
piping
are cle
an. Before
putting the pump into operation, it should be
thoroughly flushed to remove the rust preventive
as well as any foreign matter, which may have
accumulated during installation.
Isolate the pump from pipe work, flush out the
pipe work then flush the pump. This operation
must be carried out thoroughly because the
pump contains many close running clearances,
which will be damaged by dirt particles. Take all
possible care not to contaminate your system.
b)
Clean
and
flush be
aring housing
s.
Fill reservoir
with oil to the proper level.
(
see
pump lubricants).
Check that oil rings are properly
positioned and not hung-up by looking through vent.
c)
Turn rotor
by h
and or
with strap
to make
sure it
turns freely.
d)
Ensure
that the
mechanical seal
is
properly
assembled and tightened.
Most cartridge seals are equipped
with a spacer between the gland plate and drive
collar. This spacer must be removed before starting
unit.
e)
Ensure
coupling
is
properly aligned
and
lubricated; and pump and driver are properly
doweled. (Refer to
shaft /coupling alignment
procedure).
f)
Ensure
coupling
guard
is
in
place.
g)
Check
torque
of
all
bolting and
plugs
for
tightness.
5.1.2
Pump
instrumentation
set
points
The following set points apply to DMX Pumps, which
use the ball/ball bearing arrangement.
a)
Bearing
metal
temperature
•
Normal
60
o
C to 82
o
C (140
o
F to
180
o
F)
•
Alarm
88
o
C (190
o
F)
•
Shutdown
93
o
C (200
o
F)
b)
Bearing
housing
vibration
•
Normal
2.5
to
7.6
mm/s
(0.1
to
0.3 in./sec)
•
 Alarm
10.2
mm/s
(0.4
in./sec)
•
Shutdown
12.7
mm/s
(0.5
in./sec)
5.1.3
Initial
start
up
procedure
a)
Close d
ischarge valve
if a
bypass
system is
used. If not, crack open the discharge valve.
b)
Prepare
the
driver
for start-up
in
accordance
with
the manufacturer’s instructions.
c)
Warm-up
pump
(if
required).
Avoid severe thermal shocks to the pump as a result
of sudden liquid temperature changes. The pump
must be preheated prior to start-up. Unless otherwise
specified, the external temperature of the casing
must be wit
hin 55.
6 °
C (100 °
F) of the t
emper
ature
of
the liquid to be pumped at time of start-up.
Pump temperature stratification could
occur
. A maxim
um tempe
ratur
e delta of 28 °
C (50 °
F)
between the upper and lower case shall be checked
prior to starting the pump.
Due to the heavy metal sections, the casing will lag
the liquid temperature during such changes, and

Flowserve DMX Specifications

General

Brand	Flowserve
Model	DMX
Category	Water Pump
Language	English