Filling / Venting; Start-Up; Running Checks; Shutdown - salmson S Serie Manuel D'installation Et Mise En Service

ENGLISH
Check following points :
 Pump flow is always higher than authorized continuous minimum flow,
 Pump never runs dry,
 Normal leakage of the shaft seal is controlled,
 Surface temperature bearings housings is lower than the maximum
admissible surface temperature in selected ATEX zone,
 Pressure on discharge side of the pump is lower than pump maximum
allowable working pressure.
 Set alarm and stop trips of sensors.
In every cases check :
 Quality of electrical connections,
 Protection devices are installed,
 Auxiliary piping are connected,
 Flanges connections,
 Suction line and pump casing are filled with fluid,
 Motor direction of rotation is correct,
 Coupling alignment is correct,
 Oil level was checked and greasing of ball bearings has been done,
 Coupling guard is installed.
8.2 FILLING / VENTING
During pre‐commissioning, pump casing must be filled with fluid. Other
starts will not need further actions. See chapter 8.6 PRIMING TIME.
Take precautionary measures when manipulating dangerous or
polluting fluids. Wearing individual protective devices is necessary.
The operator must know potential hazards.
8.3 START‐UP
Check that the automatic greasing cartridge is screwed in
mechanical seal housing and that it is switched on in position 12.
(supply of grease during 12 months). Check its grease content if it is not
a new cartridge :
 Open slightly the discharge valve (only if no auxiliary venting pipe is
installed).
 Open all valves in suction line.
 Switch on the pump
 Wait until pump has primed and note this priming time. Then close
the discharge isolating valve and measure max pressure (zero flow).
Compare this pressure to the shutoff pressure available on the hydraulic
curve.
In order to avoid overheating of the liquid inside the pump the
pump should not work more than 20 to 30 seconds against a
closed discharge valve.
 If expected pressure is reached then open progressively the discharge
valve.
If there is no liquid delivered or if discharge pressure is too low
then see chapter "trouble shooting".
16
8.4 RUNNING CHECKS
During operation of pump in duty conditions (capacity, head,
temperature, ...) the following points must be checked :
 Check and note pump duty point. If necessary convert pressure value
from bar indicated on the pressure gauge to mwc :
HMT = (P x 100) / (SG x 9,806) with SG= fluid Specific Gravity.
mce bar
 Check and note current consumption on each phase of the motor.
 Check calibration of motor protections.
 Check temperature of ball bearings (on bearing housing surface).
 Check flexible coupling alignment after several pump starts (only for
concerned pumps variants).
 Check tightening of flanges fastening bolts.
 Check there is no leakage and no abnormal running noise.
When pumping hot fluids, the definitive coupling alignment should
be done only when system nominal temperature is reached and
stabilized. See chapter 7.1.4 COUPLING ALIGNMENT
Check the surface temperature on the bearing bracket and on the
pump casing. Check pumped fluid temperature. Alarm and stop
trips settings should be done according those values. Refer to specific
sensors IOM before adjusting those trips.
8.5 SHUTDOWN
Before the pump is stopped close the discharge isolating valve.
Ensure that the pump runs in that condition no more than few
seconds.
When the pump has come to a standstill : close the suction isolating
valve. If the pump is equipped with auxiliary systems such as a quench,
heating system, flushing, external lubrication, etc ... it must be closed at
the last step.
If temperature is likely to drop below freezing point, pump casing
and auxiliary connected systems should be completely drained or
otherwise protected. For prolonged shut‐downs an adapted rust
protective coating should be applied to the inside and outside of the
pump.
Pumping explosive, toxic or polluting fluids : make sure that all
necessary actions were taken to avoid the creation of a hazard for
people or environment during drainage operations.
Products which are sent back to Salmson must be drained and
cleaned. Pumped fluid should be completely removed from the
pump.
8.6 PRIMING TIME
The suction line drains down into the tank between two starts. The flow
does not appear immediately after pump start but only after a few
seconds : it is called priming time.
Piping will be design in order to allow free air extraction without
counter‐pressure (discharge back to tank, vent valve, discharge line
to an atmospheric exhaust ...).
Even if the mechanical seal is equipped with a quench behind the
stationary seat, priming time will be limited to 5 minutes. If
discharge pressure doesn't rise after this time, stop the pump and check
piping system.
For an ATEX application, it may happen that the alarm temperature