Flowserve N-Series Worthington - Manual (Page 10)

N-SERIES OF THRUST POT USER INSTRUCTIONS ENGLISH 07/14
Page 10 of 20
3.2 Operation
a) The bearing housing temperature shall not exceed
80 °C (176 °F). If higher bearing temperature is
observed, check the viscosity grade of the used
lubrication oil.
The minimum viscosity is 10
cSt at the expected oil temperature.
(Oil temperature = bearing gland temperature +
10°C (18°F))
4.0 MAINTENANCE
4.1 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.
Any work on the machine must be performed when it
is at a standstill.
On completion of work all guards and safety devices
must be re-installed and made operative again.
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".
Never clean equipment with inflammable solvents or
carbon tetrachloride. Protect yourself against toxic
fumes when using cleaning agents.
4.2 Maintenance schedule
a) Check bearing lubricant level, and if the hours
run show a lubricant change is required.
b) Check vibration, noise level and surface
temperature at the bearings to confirm
satisfactory operation.
c) Check dirt and dust is removed from areas
around close clearances, bearing housings and
motors.
Our specialist service personnel can help with
preventative maintenance.
If any problems are found the following sequence of
actions should take place:
a) Ensure equipment complies with the
recommendations in this manual.
b) Contact Flowserve if the problem persists.
4.2.1 Routine Inspection (daily/weekly)
The following checks should be
made and the appropriate action taken to remedy any
deviations.
a) Check operating behavior; ensure noise,
vibration and bearing temperatures are normal.
4.3 Spare parts
4.3.1 Storage of spares
Spares should be stored in a clean dry area away from
vibration. Inspection and retreatment of metallic
surfaces (if necessary) with preservative is
recommended at a 6 monthly interval.