Alignment; Starting; Checking The Sea; Pumps With 1-2 Seal - VARISCO DUO JD Instrucciones Para Su Utilizacion Y Mantenimiento

8

ALIGNMENT

The motorpump dose not need to be aligned.
9

STARTING

Before operating the pump, check that all parts of the system have been correctly installed and that all safety devices
are operative.
9.1 CHECKING THE SEAL
Before starting the pump, check the oil level in the grease gun. Also check the rubber collars on the delivery and intake pipes and
make sure the pipe tightening lever is intact.
9.2

PUMPS WITH 1-2 SEAL

The 1-2 seals are greased during assembly. When required, grease using the grease gun situated between the pump and
motor (Fig. 9).
9.3

REFUELLING

Refuelling must be performed with the unit switched off and the engine cool, pouring fuel in through the inlet covered by the fuel
9.4

PRIMING

Once all checks and refuelling are done, also including engine checks (in this regard, proceed as instructed in the engine's manual
attached) and all operations prescribed herein, you can start the engine and consequently prime the pump.
To start the engine, refer to the engine's own manual.
To prime the pump, you must:
- Gradually accelerate to full speed. Never change the accelerator lever limit stop: at speeds higher than those for which the
engine is set, the pump absorbs more power than the engine can supply. Never exceed the maximum speed given on the
pump's nameplate.
When the pump has primed:
- If the pump does not seem to be operating normally, it is imperative you stop the pump and determine the causes (see section: 13).
To stop the engine, and consequently stop the engine-driven pump, simply "pull" the stop knob (Fig. 8).
10

MAINTENANCE

- Stop the engine.
- Close the pump's suction and delivery gate valves.
- Disconnect the pump from the suction and delivery pipes.
- Allow the pump to cool down to ambient temperature if the liquid pumped is hot.
- Drain liquid from the pump by means of the drain cover (1 Fig. 3).
- Remove and clean, removing any liquid pumped still inside.
Residual liquid may be found in the pump casing, head and suction line. Comply with safety procedures for the handling
10.1

INSPECTION AND CHECKS

Check the pump is working correctly at regular intervals. Use the instruments installed in the system (pressure gauge, vacuum
We recommend periodic maintenance of the various parts subject to wear, particularly the impeller and wear plate.
On request, pumps due to pump brackish water can be supplied with a galvanic corrosion-inhibiting device, which consists in
a series of zinc discs fastened on the drain cover (1 Fig. 3). Every 1,000 hours, you must check the zinc's state of repair and,
where necessary, replace.
10.2

REPLACING THE IMPELLER

To replace the impeller, you must:
- Drain the pump casing by means of the relevant drain cover (1 Fig. 3).
- Unscrew the nuts (52 Fig. 11) and remove the pump casing, being careful not to damage the gasket (43 Fig. 11).
- Prevent the impeller (03 Fig. 11) from turning and unscrew the self-locking nut (33 Fig. 11).
- Remove the impeller and replace it with a new one.
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INSTRUCTIONS FOR THE USE AND MAINTENANCE - DUO JD
WARNING
WARNING
WARNING