Viking Pump TSM280: Duralobe (Discontinued) - Manual (Page 20)

Page : 18
3.5 Shutdown Procedure.
When shutting the pump down close both the suction and discharge valves
and ensure that the necessary safety precautions are taken:
- The prime mover power source has been isolated.
- If installed, the pneumatically operated integral relief valve has been
depressurized.
- If Installed, flushed product seal auxiliary services have been isolated
and depressurized.
- Pump head and piping have been drained and purged.
3.6 Routine
Maintenance.
- Check oil levels regularly.
- Change the oil every 12 months or 3000 operating hours whichever is
the sooner.
- For lubricant capacities and grades refer to section 5.3.
3.7
Heating and Cooling Devices
see Figs 9 and 10.
All Duralobe ® models except the S1 series, can be supplied with a jacketed
front cover and rotorcase with ports for circulation of a heating/cooling media.
The jacketed front cover and rotorcase heating and cooling ports are
strategically positioned such that the required thermal effect acts on the
pumping chamber and product seal area.
The pressure rating of the Duralobe
® series jacketed front cover and
rotorcase heating/cooling ports is 50 psi and should not be exceeded without
consulting Viking Pump or your local Viking Pump distributor.
Heating/cooling of the pump head is used to maintain, rather than
increase/decrease the temperature of the pumped media and should be used
as part of a complete system where suction and discharge lines and vessels
are also heated/cooled.
Where heating/cooling devices are employed, the heating/cooling media
should be circulated 15-20 minutes prior to pump start-up and should be
allowed to continue for a similar period of time after the pump has been
shutdown. Where a CIP cycle is employed as part of the process, the
heating/cooling media should continue to be circulated during the cleaning
cycle.
WARNING