Flowserve Durco Mark 3 ISO Frame Mounted - Manual (Page 26)

DURCO MARK 3 ISO FRAME MOUNTED ENGLISH 85392719 12-14
Page 26 of 52
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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, to include the following:
a) Any auxiliary systems installed must be monitored, if
necessary, to ensure they function correctly.
b) 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.
c) Check for any leaks from gaskets and seals.
The correct functioning of the shaft seal must be
checked regularly.
d) Check bearing lubricant level, and if the hours run
show a lubricant change is required.
e) Check that the duty condition is in the safe
operating range for the pump.
f) Check vibration, noise level and surface temperature at
the bearings to confirm satisfactory operation.
g) Check dirt and dust is removed from areas around
close clearances, bearing housings and motors.
h) Check coupling alignment and re-align if necessary.
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
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.
b) Check that there are no abnormal fluid or lubricant
leaks (static and dynamic seals) and that any
sealant systems (if fitted) are full and operating
normally.
c) Check that shaft seal leaks are within acceptable
limits.
d) Check the level and condition of oil lubricant. On
grease lubricated pumps, check running hours
since last recharge of grease or complete grease
change.
e) Check any auxiliary supplies eg heating/cooling (if
fitted) are functioning correctly.
Refer to the manuals of any associated
equipment for routine checks needed.
6.2.2
Periodic inspection (six monthly)
a) Check foundation bolts for security
of attachment and corrosion.
b) Check pump running records for hourly usage to
determine if bearing lubricant requires changing.
c) The coupling should be checked for correct
alignment and worn driving elements.
Refer to the manuals of any associated
equipment for periodic checks needed.
6.2.3
Re-lubrication
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals. In
general however, the following is recommended.
Oil lubricated bearings 6.2.3.1
Normal oil change interval for mineral oil lubricated
pumps is every six months.
When synthetic oils are used the lubrication interval can
increase to 18 months, and up to 36 months for the ISO
3A construction of pumps.
For pumps on hot service or in severely damp or
corrosive atmosphere, the oil will require changing more
frequently. Lubricant and bearing temperature analysis
can be useful in optimizing lubricant change intervals.
The lubricating oil should be a high quality mineral oil
having foam inhibitors or synthetic without foam
inhibitors for oil mist. Synthetic oils may also be used if
checks show that the rubber oil seals will not be
adversely affected.