Running Checks; Shutdown; Maintenance; General Information - salmson NFCH Installation Et Mise En Service

8.3 START-UP
If a barrier fluid, flushing fluid, cooling fluid or a heating fluid is
used, check that auxiliary systems are activated and working
correctly before pump start-up.
 Close isolating valve on pump discharge side.
 Open all valves in suction line.
 Proceed to pump priming (if not already done). Pump casing and
suction pipe should be completely filled with fluid.
 Turn the pump on and check discharge pressure increase. Compare
this pressure to the shutoff pressure available on the hydraulic curve
In order to avoid an important 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 progressively open the discharge
valve.
If there is no liquid delivered or if discharge pressure is too low
then see chapter "trouble shooting".

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.
9

MAINTENANCE

9.1 GENERAL INFORMATION

Only properly trained and skilled staff should undertake
maintenance operations.
Only authorized personnel should undertake maintenance on
ATEX certified equipments. Make sure to avoid creation of explosion
hazard while proceeding to maintenance in a ATEX zone.
All technical documents delivered with the pump should be known
and should be available near the pump.
The maintenance crew should be informed about the risks linked to the
use of the pump and to the pumped fluids before they can start working
on the equipment (dangerous products, fluid and pump temperature,
pressurized parts, ...). They should be equipped with all appropriated
individual safety protections (glasses, gloves, ...) and should respect local
industrial and security rules.
Pump contains a part of pumped fluid even when it is at a
standstill. Drain and flush pump casing with care before starting
pump disassembly.
Appropriate lifting devices should be available to help personnel moving
heavy loads.
The maintenance area must be clearly identified. Install warning boards
with the words « WARNING : machine under repair ! » on the pump and
on the control cabinet.
Any work on the machine must be performed when pump is
stopped. Prior to any maintenance or repair work the motor
should be electrically isolated and secured against uncontrolled start.
Lock the main switch open and disconnect circuit breaker. Withdraw the
fuses if any.
WARNING : electrical equipments that must be powered on during the
maintenance work or pressurized equipments must be clearly identified.
End of maintenance operations : all protective parts that were removed
before maintenance should be reinstalled and all security devices should
be reactivated. Pump surrounding area should be cleaned.
9.2 MAINTENANCE
INSPECTIONS SCHEDULE
It is recommended to build up a maintenance and inspection plan
to ensure a reliable use of pump and to reduce malfunctions
hazards. Following check points should be included in this maintenance
plan :
 Check state and working of securities and auxiliary systems,
 Check and adjust gland packing (if any) for visible leakage,
 Check for any leaks from pump gaskets and flanges seals,
 Check lubricant level and aspect of oil (oil lubricated bearings) in
bearing bracket,
 Check running time and replacement frequency of lubricants / ball
bearings,
 Check the bearing bracket housing surface temperature on ball
bearings area,
 Check dirt and dust is removed from pump and motor ,
 Check coupling alignment (depending on pump variant),
 Check if there is unusual noises (cavitations, hissing, purring, ...) or
excessive vibrations.
Check point
State of the auxiliary systems
Motor
Shaft sealing
Leaks from gaskets
Oil level and grease quantities
Lubricants (ball bearings)
Bearings surface temperature
Cleaning
Alignment and coupling wear
Noise, vibrations
Anchoring quality
Those frequencies are given for information only. They could be used as
a basis to the creation of a maintenance plan when starting a new
installation. Depending on installation conditions and use, the
periodicity will be shortened or prolonged.
9.2.1

LUBRICATION

The ball bearing is lubricated with a lithium-saponified grease free
from resins and acids and with anti-rusting agents (K3K DIN51825)
15
ENGLISH
AND PERIODIC
Periodicity
Depends on equipment type. See
dedicated equipment IOM
See manufacturer IOM
Weekly
Weekly
Daily / Weekly / Monthly
Replacement frequency according ball
bearing type and shaft speed
Monthly
Twice a year
Twice a year
Monthly
Yearly