Residual Risks; Repairs; Disassembly; Assembly - VARISCO JB Serie Instrucciones Para Su Utilizacion Y Mantenimiento

37 Flushed seal
before starting up the pump, connect the flushing hole in the seal area to a water line at a pressure of at least 2 bar. Ensure before
starting the pump and during operation that there is a constant flow of flushing water in the seal. Flushing ensures that the liquid
will be diluted in the seal area to allow the seal to operate under the best possible conditions. When the pump is stopped, and will
not be restarted again for some days, empty the pump through the lower clean out cover (fig. 11) and wash it completely through
the upper priming cover (fig. 17).
13.10 The seal overheats
the pump does not prime (see paragraphs 13.1 - 13.9).
13.11 The elastomer portions of the flexible coupling wear out quickly
Check that the pump is correctly aligned as described in paragraph 10.
14

RESIDUAL RISKS

Residual risks are those which cannot be eliminated through the pump design:
- knocks
- anomalous pressure rises
- misuse
- maneuvering errors in the vicinity of the pump.
15

REPAIRS

Before carrying out repairs on the pump it is essential to:
- shut down the engine
- if the pumped liquid is hazardous, follow the safety procedures for handling hazardous liquids
- empty the pump casing through the drain cover (fig. 11)
- remove and clean any residues of the pumped liquid.
16

DISASSEMBLY

16.1 Removing the pump from the system
Carry out the instructions in paragraph 15
- remove the nuts of the suction and discharge flanges
- remove the bolts which fix the pump to the base plate
- slip the pump out of the flexible coupling (if fitted) or remove it from the engine
- before lifting the pump with appropriate lifting devices, check the weight of the pump on the table.
17

ASSEMBLY

17.1 Mounting the pump in the system
- lift the pump using suitable lifting devices
- position the pump on the base plate
- reconnect to the flexible coupling or engine
- check the alignment as described in paragraph 10
- fix the pump to the base plate
- connect the pump to the pipework
- remount any coupling guards fitted.
18

SPARE PARTS

To ensure that the pump continues to operate well as time goes on, it is advisable, when ordering the pump, to acquire the spare
parts recommended for the first maintenance operation:
- mechanical seal
- impeller
- wear plate
- set of gaskets
- check valve
- self-locking impeller nute
18.1

Ordering spare parts

To order spare parts, specify the following:
- type of pump
- serial number of the pump
- reference number and description of the part as shown in the exploded drawing.
19

DISPOSAL

- Do not dispose the pump, or any part of it, in the environment.
- Metal parts can be recycled as scrap.
- Grease and oil must be recovered and stored as prescribed by the relevant legislation for disposal by approved agencies.
- Gaskets in elastomers must be removed and disposed of in appropriate waste dumps so that they can be disposed of appropriately.
- The battery must be kept separate and disposed of through an authorized collection centre so that they can be disposed of appropriately.
22
ISTRUCTIONS FOR THE USE AND MAINTENANCE -
JB / JD