7 Servicing/Maintenance
39 of 72
Sewatec (60 Hz)
NOTE
All maintenance work, service work and installation work can be carried out by KSB
Service or authorized workshops. Find your contact in the attached "Addresses"
booklet or on the Internet at "
www.ksb.com/contact
".
Never use force when dismantling and reassembling the pump set.
7.2 Maintenance/inspection
7.2.1 Supervision of operation
DANGER
Formation of a potentially explosive atmosphere inside the pump
Explosion hazard!
▷
The pump internals in contact with the fluid to be handled, including the seal
chamber and auxiliary systems must be filled with the fluid to be handled at all
times.
▷
Provide sufficient inlet pressure.
▷
Provide an appropriate monitoring system.
CAUTION
Increased wear due to dry running
Damage to the pump set!
▷
Never operate the pump set without liquid fill.
▷
Never close the shut-off element in the suction line and/or supply line during
pump operation.
CAUTION
Impermissibly high temperature of fluid handled
Damage to the pump!
▷
Prolonged operation against a closed shut-off element is not permitted
(heating up of the fluid).
▷
Observe the temperature limits in the data sheet and in the section on
operating limits.
(
ð
Section 6.2, Page 34)
While the system is in operation, observe and check the following:
▪
The pump must run quietly and free from vibrations at all times.
▪
Monitor the correct functioning of any auxiliary connections.
▪
Monitor the stand-by pump.
To make sure that stand-by pumps are ready for operation, start them up once a
week.
▪
Check the flexible elements of the coupling or belts. Replace them if required.
▪
For bearing temperature monitoring, set the temperatures as follows: alert at
185 °F (85 °C), pump cut-out at 194 °F (90 °C).
▪
In the case of vibration monitoring, set the values as follows: alert at 0.248 in/s
(6.3 mm/s) , pump cut-out at 0.374 in/s (9.5 mm/s).
7.2.2 Visual inspection through the inspection hole
If there are problems with clogging, the inside of the casing and/or the impeller can
be checked via the inspection hole.