Mobile Installation; Electrical Connections; General Safety Precautions; Wiring - Zenit Grey Serie Manual De Primera Instalación

First installation manual – Translation of original instructions

2.6.2 Mobile installation

EN
In mobile installation (Fig. 10) the pump is mounted on a specific base which keeps it vertically on the bottom of the tank and ensures that the
intake is at the correct height.
Installation procedure (SEE SEE ANNEX 2 PAGE 87)
1. Check that the pump is disconnected from the power supply panel and the impeller turns in the correct direction using the procedure described
in point 2.4 "Checking the impeller rotation direction".
2. Lower the pump onto the base using a chain or sling of suitable strength secured to the handle. Ensure that it cannot fall and/or swing.
3. Secure the pump to the base with the screws provided.
4. Connect the outlet to the piping using the standardised flange. Use stainless steel metal fasteners or protect the screws and nuts with a sui-
table product to prevent corrosion. A shut-off valve and a ball type check valve with full free passage should be installed using a connection
pipe with length equal to at least 5 times the diameter of the outlet. If a hose is used, fit a flanged hose connector.
5. A hose with reinforcing coil or semi-rigid hose is recommended to ensure that the free passage remains constant even at bends in the hose
or points where it changes direction.
6. Secure the hose to the union by means of a metal band clamp.
7. Lower the pump into the tank until it rests firmly on the bottom using a chain or sling of suitable strength secured to the handle. Ensure that
the pump cannot fall and/or swing.
8. Secure the electric cables so that they cannot be twisted or torn or drawn in by the pump.
9. Bring the cables out of the tank through a clean, smooth duct. Do not lay cables with tight bends or in positions with risk of crushing or damage.
10. Connect the electric cables to the control panel as shown in the diagram provided in point 3.6 "Connection diagrams".

3. ELECTRICAL CONNECTIONS

3.1 General safety precautions

• All the procedures involved in connecting the unit to the electrical mains must be carried out by skilled staff in accordance with the relevant legal
requirements: incorrect electrical connections may cause fires and an electrocution hazard, or the risk of damage to the product.
• Check that the unused conductors are properly insulated and fixed in the electrical panel. .
• Before installation, make sure that the power supply line voltage and frequency are as stated on the nameplate and that the power absorption
of the pump is below the maximum current the system is able to deliver.
• The maximum voltage variation allowed for rated value is ± 5%
• Voltage imbalance between phases: max 2%
• The fuses and protective cut-outs must be of suitable rating for the system's characteristics.
• Protect the pump motor using an overload cut-out suitable for the electrical data provided on the nameplate.
• Make sure that the thermal protection devices are properly connected: apart from leading to forfeiture of warranty cover, failure to connect the
thermal protection may constitute a hazard.
• The electrical operation and safety of ZENIT electric pumps are guaranteed for the configuration supplied by the manufacturer: any changes
(e.g. addition of extra lengths of cable to the original power lead) may cause a deterioration in the pump's characteristics.
Before installation and the first startup, make sure that the electrical cables are not damaged in any way to avoid short circuit.

3.2 Wiring

• Make sure that the electrical cables have not be exposed to damp and/or immersed in water.
• The cable's free terminals must be connected to a control panel with a degree of insulation suitable for the installation environment.
• Secure the electric cables so that they cannot be twisted, torn and/or crushed.
• If the cable is damaged, do not replace it; contact Zenit or an Authorised Service Centre.
• Do not underestimate the problems caused by voltage drops.
The ends of the power supply cable must be connected to an electric panel certified for use in potentially explosive atmospheres
if it is installed in a hazardous area
22
Fig. 10
Grey
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