General Safety Regulations; List Of Residual Risks; Safety Regulations Applying To Installation And Maintenance Operations; Individual Protective Devices (Ipd) To Be Used - Zenit DRO 50/2/G32V A0CM-E Manuel D'utilisation Et D'entretien

1. 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 operations of installing motor pumps and making connections to the electrical power supply must be carried out by a
skilled technician, carefully following the instructions in paragraph 4 "INSTALLATION".
Do not use the motor pump for any operation not expressly indicated in paragraph 3 of this manual "3.1. USE
CHARACTERISTICS".
Do not interfere with the product in any way, changing its performance or use characteristics; any operation of this type will
not only immediately invalidate the guarantee, but will also place full responsibility for any damaging event which may occur
during operations on the user.
Do not operate the motor pump in the air apart from the brief period of time necessary to check the direction of rotation.

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

1.2 SAFETY REGULATIONS APPLYING TO INSTALLATION AND MAINTENANCE OPERATIONS

To safely perform maintenance operations always follow the procedure below:
- Use qualified personnel for operations involving the replacement or repair of mechanical parts and/or electrical components;
- Stop the motor pump and close the inlet and outlet shutters;
- Check that the motor pump is disconnected from the mains. To disconnect the motor pump from the mains disconnect firstly
the phase connectors and then the yellow-green earth lead;
- If the motor pump is submerged remove it from the tank;
- If the motor pump has been in use, wait until the temperature has fallen below 50°C;
- Replace broken or worn parts with original spares only.
If in doubt consult the manufacturer before performing any repair or replacement operation.
Since the motor 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 near or into the inlet port on the underside of the motor pump or into the outlet port on the side.
Do NOT install in WELLS, TANKS or OTHER ENVIRONMENTS where GAS may be present: RISK OF EXPLOSION
(except -EX versions).
Do not allow the ends of power cables to come into contact with any liquid, including the liquid being motor pumped.

1.3 INDIVIDUAL PROTECTIVE DEVICES (IPD) TO BE USED

Wear adequate protective clothing when handling the product, especially if previously installed:safety boots, safety goggles,
protective gloves, leather apron or similar protection.
Every time maintenance or repair operations are performed on an installed motor pump, particularly one immersed in
dangerous liquids or septic tanks, all parts must be thoroughly cleaned and washed with water or specific products.

2. DEVICE IDENTIFICATION

A metal identification plate showing all characteristic product data is applied to the motor pump. Refer to the data on this
plate when seeking information or clarification.

3. TECHNICAL CHARACTERISTICS

The technical characteristics of the motor pump are shown on the metal plate and on the packaging.
To ensure high resistance to wear, the pump casing and rotor in DRO and DGO motor pumps are made from EN-GJL-250
cast iron and the remaining parts in EN-GJL-250 cast iron (UNI EN 1561 - 1563). The DRX and DGX are made entirely in
CF-8M stainless steel suitable for particularly aggressive liquids, whilst the DRB and DGB are in B10 bronze adapted to
seawater.

3.1 USE CHARACTERISTICS

- Power supply: SINGLE PHASE and THREE PHASE as indicated on the plate Max permissible variation: ± 10% of nominal
value indicated on the data plate.
- Maximum motor pump immersion depth: 20 metres below liquid level.
- Maximum temperature of motor pumped liquid: 40 °C.
- Maximum permissible number of starts per hour: 20 for up to 4 kW power; 15 for 4 to 7.4 kW; 10 foe 7.5 to 45 kW; 5 for
over 45 kW; at regular intervals in all cases.
To prevent the entrainment of air caused by turbulence of the flow, and consequent malfunctioning of the motor pump,
ENSURE that the liquid does not fall directly to the inlet, and that the inlet is submerged sufficiently to avoid the formation of
vortices.
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