A750-04-880 Issue F
Page 32
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MAINTENANCE
5.3
Inspect the pipelines and connections
Note:
Where possible, we recommend that you investigate the cause of any damage or corrosion, and implement
corrective measures to prevent any future damage of components.
Use the following procedure to inspect the pipelines and connections:
1. Inspect all of the process inlet pipelines and connections and check that they are not damaged or corroded and
that they do not leak. Repair or replace any damaged or corroded component and seal any leak found.
2. Inspect all of the process outlet pipelines and connections and check that they are not damaged or corroded and
that they do not leak. Repair or replace any damaged or corroded component and seal any leak found.
3. Inspect all of the electrical cables connected to the pump and check that they are not damaged and have not
overheated. Repair or replace any damaged or overheated cable.
4. Check that all electrical connections to the pump are secure. Tighten any loose connections.
5. Inspect all of the sealing liquid and seals flush liquid supply system components, pipelines and connections and
check that they are not damaged or corroded and that they do not leak.
5.4
Check the ATEX safety devices for correct operation: ATEX
Category 1 and 2 pumps
You must regularly check that the ATEX safety devices in your system operate correctly:
1. On pumps configured for external seals flush supplies only: check that the flow and pressure switches in your
seal flush supply pipelines or reservoir level switch (see
) operate correctly to shut down your
system.
2. If your system incorporates a temperature transmitter, check that the temperature transmitter operates
correctly to shut down your system when the temperature of the sealing liquid ring in the pump is too high.
Table 15 - Maintenance plan
Operation
Frequency
Refer to Section
Inspect the pipelines and connections
Weekly
Check the ATEX safety devices for correct operation *
Monthly
Calibrate the ATEX safety devices *
Yearly
Replenish the bearings with grease
Every 2000 hours
Overhaul the pump
3 Yearly
* ATEX Category 1 and 2 pumps only
WARNING
You must regularly check the ATEX safety devices for correct operation as described below. If you
do not, the ATEX certification of your system will not be valid.
