Flowserve MENBLOC - Manual (Page 25)

MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13
Page 25 of 40 flowserve.com
5.8.1 Cleaning prior to operation
Pumps that are to be used for a food or drinking
water application should be cleaned before being
put into initial operation and after the installation of
spare parts that are in contact with the liquid.
Cleaning once the pump has been commissioned
will depend on the application and operating
conditions.
The user must ensure that the cleaning
procedures are suitable for the application and
operating conditions, and local regulations.
6 MAINTENANCE
6.1 General
If a belt drive is used, the assembly and
tension of the belts must be verified during regular
maintenance procedure.
In dirty or dusty environments, regular checks
must be made and dirt removed from areas around
close clearances, bearing housings and motors.
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.
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 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 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".
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. 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.