Flowserve BP - Manual (Page 24)

BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)
Page 24 of 44 flowserve.com
6 MAINTENANCE
6.1 General
It is the plant operator's responsibility to ensure
that all maintenance, inspection and assembly work
is carried out by authorized and qualified personnel
who have adequately familiarized themselves with
the subject matter by studying this manual in detail.
(See also section 1.6.)
Any work on the machine must be performed when it
is at a standstill. It is imperative that the procedure
for shutting down the machine is followed, as
described in section 5.9.
On completion of work all guards and safety devices
must be re-installed and made operative again.
Before restarting the machine, the relevant
instructions listed in section 5, Commissioning, start
up, operation and shut down
must be observed.
Oil and grease leaks may make the ground
slippery. Machine maintenance must always
begin and finish by cleaning the ground and the
exterior of the machine.
If platforms, stairs and guard rails are required for
maintenance, they must be placed for easy access to
areas where maintenance and inspection are to be
carried out. The positioning of these accessories
must not limit access or hinder the lifting of the part to
be serviced.
When air or compressed inert gas is used in the
maintenance process, the operator and anyone in the
vicinity must be careful and have the appropriate
protection.
Do not spray air or compressed inert gas on skin.
Do not direct an air or gas jet towards other people.
Never use air or compressed inert gas to clean
clothes.
Before working on the pump, take measures to
prevent an uncontrolled start. Put a warning board
on the starting device with the words:
"Machine under repair: do not start"
.
With electric drive equipment, lock the main switch
open and withdraw any fuses. Put a warning board
on the fuse box or main switch with the words:
"Machine under repair: do not connect".
Guard fasteners must remain captive during
dismantling of guards, as described in section 5.5.
Before attempting to disassemble
pump, pump must be isolated from system, by
closing suction and discharge system valves, drained
of liquid and cooled, if pump is handling hot liquid.
When pump is handling “hot” liquid,
extreme care must be taken to ensure safety of
personnel when attempting to drain pump. Hot pumps
must be allowed to cool before draining.
When pump is handling “caustic”
liquid, extreme care must be taken to ensure safety of
personnel when attempting to drain pump. Protective
device of suitable protective materials must be worn
when draining pump.
Before attempting any maintenance
work on pumps in vacuum service, pumps must be
isolated from suction and discharge system, then
carefully vented to return pressure in pump casing to
atmospheric pressure.
For prolonged shut-downs and
especially when ambient temperatures are likely to
drop below freezing point, the pump and any cooling
and flushing arrangements must be drained or
otherwise protected
During long period of shut down, turn the
pump rotor by hand once a week and check the
lubricating oil before start up.
Never clean equipment with inflammable solvents or
carbon tetrachloride. Protect yourself against toxic
fumes when using cleaning agents.
6.2 Maintenance schedule
It is recommended that a maintenance plan and
schedule is adopted, in line with these User
Instructions, to include the following:
a) Any auxiliary systems installed must be
monitored, if necessary, to ensure they function
correctly.
b) Check for any leaks from gaskets and seals.
The correct functioning of the shaft seal must be
checked regularly.
c) Check bearing lubricant level, and if the hours
run show a lubricant change is required.
d) Check that the duty condition is in the safe
operating range for the pump.
e) Check vibration, noise level and surface temperature
at the bearings to confirm satisfactory operation.