Flowserve VF - Manual (Page 23)

VF USER INSTRUCTIONS ENGLISH 71561233 - 11/09
Page 23 de 32
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
1.6.2).
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 5.6.
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.
An oil, grease or liquid leakage may make the
ground slippery. The maintenance of a
machine must always begin and finish by
cleaning the ground and the exterior of the
machine.
If platforms, stairs and guardrails 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 are used to
clean the machines, the operator and those people
in the vicinity must be careful and have appropriate
gas-protection, wearing at least eye protectors. DO
NOT SPRAY air or compressed inert gaz 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".
Never clean pieces with inflammable solvents or
carbon tetrachloride. Protect yourself against toxic
fumes when cleaning pieces with cleaning agents.
6.2 Maintenance schedule
It is recommended that a maintenance plan
and schedule is adopted, in line with these User
Instructions. It should include the following:
a) The pump must be completely vented and
drained and rendered inert before any
disassembly operation.
b) Any auxiliary systems installed must be
monitored, if necessary, to ensure they
function correctly.
c) During cleaning of the pump ensure the
compatibility between the cleaning products
and the gaskets.
d) Verify the condition of the gaskets
e) Gland packings must be adjusted correctly to
give visible leakage and concentric alignment
of the gland follower to prevent excessive
temperature of the packing or follower.
Mechanical seals should present no leakage.
f) Check for any leaks from gaskets and seals.
The correct functioning of the shaft seal must
be checked regularly.
g) Check bearing lubricant level, and if the hours
run show a lubricant change is required.
h) Check that the duty condition is in the safe
operating range for the pump.
i) Check vibration, noise level and surface
temperature at the bearings to confirm
satisfactory operation.
j) Check the tightness of the connections.
k) Check dirt and dust is removed from areas
around close clearances, bearing housings
and motors.
l) Check coupling alignment and re-align if
necessary.
m) Verify the correct operation of the system.
The equipment used for maintenance and
disassembly in an ATEX zone must be in
conformity with the requirements zone.
Our specialist service personnel can help with
preventative maintenance records and provide
condition monitoring for temperature and vibration
to identify the onset of potential problems.
If any problems are found the following sequence
of actions should take place:
a) Refer to section 7, Faults; causes and
remedies, for fault diagnosis.
b) Ensure equipment complies with the
recommendations in this manual.
c) Contact Flowserve if the problem persists.
6.2.1 Standard maintenance
Roller bearing
The bearings fitted are prepacked with grease at
the factory. When the regreasing period is reached
it is necessary to remove as much of the old
grease as possible with a clean lint free cloth and
repack the bearings with fresh grease.