General Safety Regulations; List Of Residual Risks; Safety Regulations Applying To Installation And Maintenance Operations - Zenit DGN 250/2/G65V A1DM/50 Manuel D'utilisation Et D'entretien

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GENERAL SAFETY REGULATIONS

To install the product correctly and use it safely, read this manual carefully before undertaking any operation.
Keep this manual in an easily accessible and clean place.
The pump installation operations and electrical connections must be carried out by qualified technical personnel skilled in
electrical and mechanical fields and trained to deal with the hazards connected to places subject to risks of explosion, following
the instructions given in paragraph "4 INSTALLATION" carefully.
Do not use the electric pump for any operation not expressly indicated in paragraph "3.1. OPERATING CONDITIONS" of this
manual.
Do not tamper with the product in any way to change its performance or operating conditions; any operation of this type will not
only immediately invalidate the guarantee, but will also place full responsibility on the user for any damaging event which may
occur during operations.
Do not operate the electric pump in the air apart from the time necessary to check the rotation direction (max. for a few seconds).
Follow the instructions given in paragraph 4.3.
Do not swallow the product, or any part thereof.
Do not allow the product to come into direct contact with the body, or any part thereof, especially after its use.
Warning! The electric pump can not be powered, and therefore cannot operate, in tanks where people or animals come into direct
contact with the water.
If breakages occur in any of the product's electrical parts, this can cause leakage of the electrical current into the surrounding
liquid, therefore the intrinsic safety of the product must be guaranteed via the power supply network, which must have a correctly
scaled differential overload switch.
These electric pumps are not suitable for manipulating liquids for nutritional use.
1.1

LIST OF RESIDUAL RISKS

Even when used correctly the product presents the residual risks typical of all equipment connected to the mains electricity
supply:
- RISK OF ELECTRIC SHOCK.
- RISK OF BURNS. When carrying out maintenance operations immediately after the unit has been disconnected from the
power supply.
1.2

SAFETY REGULATIONS APPLYING TO INSTALLATION AND MAINTENANCE OPERATIONS

To safely perform maintenance operations, always follow the procedure below:
Operations involving the replacement or repair of mechanical parts and/or electrical components must be carried out by
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skilled personnel;
Stop the electric pump and close the inlet and outlet shutters, if fitted;
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Check that the electric pump is disconnected from the mains. To disconnect the electric pump from the mains, disconnect
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the phase leads first, then the yellow-green earth lead (noting down their colours first);
If the electric pump is submerged, remove it from the tank;
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If the electric pump has been in use, wait until the external temperature falls below 50°C
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Replace broken or worn parts with original spares only.
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If in doubt, consult the manufacturer before performing any repair or replacement operations.
Since the electric pumps may be used in wells and septic tanks which may contain poisonous GASES, comply with the following
precautions:
- NEVER work alone when carrying out maintenance;
- VENTILATE the well before beginning work;
- safety ropes must be attached to anyone lowered down into a well, and suitable means must be provided to allow a swift
return to the surface if necessary.
Keep out of reach of children. The product is not suitable for incompetent or inexpert people.
Do NOT put hands or objects near or into the inlet port or grating or into the outlet port on the side.
Do NOT install the pumps in WELLS, TANKS or OTHER ENVIRONMENTS where GAS may be present: RISK OF
EXPLOSION (except -EX versions).
Do not move the pump by means of the cable, see relative plate on cable.
The unit's installation and maintenance must be carried out by trained personnel.
To guarantee the pump's correct operation and mechanical resistance, the following requirements must be met:
There must be a float fitted which cuts off the power supply when the level of the liquid drops below a given danger level, to ensure
the hydraulic parts are always covered to guarantee the priming.
In general the field of application for cast iron is with fluids with pH levels 6 and 14. It also offers good resistance to corrosion, with
concentrations of chlorides in liquids ranging from pH11 to pH 14.
Do not allow the ends of power cables to come into contact with any liquid, including the liquid being motor-driven pumped.
Power supply cable:
The cable fastening must prevent the cable being subject to bending, tearing and compression;
The cable can also be fitted in a pipe to ensure it never comes into contact with the inflammable gases and/or liquids;
simply remove the plastic union on the cable inlet and screw on the cable holder pipe, the assembly will be hermetically sealed.
Do not pull the power supply cable to move the pump.
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