Warranty Cover; Technical Data; Operating Limits; Ambient Temperature - Zenit UNIQA Anleitung Für Die Installation

First installation manual – Translation of original instructions

1.7 Warranty cover

Zenit undertakes to repair or replace the product if failures are due to design, manufacturing and assembly defects and are reported to Zenit during
the warranty period.
The warranty does not cover failures due to:
•
normal wear and tear;
•
improper handling, installation and use;
•
use with incorrectly connected control systems;
•
work done by unskilled staff;
•
use of non-genuine spare parts.
!
warning Any modifications made to the product without the manufacturer's authorisation may cause hazards and lead to a deterio-
ration in performance and loss of warranty cover.
Any interventions of the pump in -EX versions must be carried out by an authorised Service Centre or by authorised technicians
using only original spare parts. Failure to comply with this conduct infers the loss of the ATEX certification of the machine and
invalidates the guarantee.

1.8 Technical data

The product's technical data and characteristics are provided in the technical information.
EN

1.8.1 Operating limits

For correct use, comply with the following operating limits:

• Ambient temperature:

The temperature of the pumped liquid must be below the Tamb max value specified on the nameplate.
• Minimum level of liquid
Note: The minimum level of the liquid in the tank must never drop below the motor cover in order to ensure that the pump is cooled effectively
(Fig. 1A page 69).
If models with cooling jacket or allowing dry operation are installed, the minimum level of the liquid may fall below the motor cover but must always
at least be above the body of the pump to prevent the formation of turbulence which may allow air to be drawn in (Fig. 1B page 69); a check should
always be performed to ensure that the electric pump operates correctly with the minimum liquid level.
Depending on the specific installation, additional measures may be necessary to ensure correct operating conditions for the pump on the intake
side.
Attention: to ensure the declared ATEX conformity, a level control system will have to be implemented, with strict manual re-
arming, through the use of tank balls, level probes or, alternatively, manned-operation.
The -EX version electric pump can be used with a frequency converter (inverter) with the compulsory condition that the breakers
inside the motor are correctly connected to the control panel (possibly, for non-standard panels, outside of the risk area).
1.9 Name plate on the pump
On the pump you can find two metal plates: the main one (Fig. 26 page 78) displays the main features of the product while, on the -EX version
models, a second plate (Fig. 27 page 78) specifies if the model can be used in potentially explosive atmospheres as per 94/9/CE (ATEX) directive.
ATEX marking description (potentially explosive atmospheres)
The symbol reported complies with Annex II of the Regulation (EC) N. 765/2008 of the European Parliament and of the Council of
9 July 2008.
2460 Registered number of the notified body involved in the production control phase
The specific marking of explosion protection given in the Annex II of the Directive 2014/34/EU
II Group of the equipment. Group II: electrical equipment for use in places with an explosive gas atmosphere other than mines
2GD
Category of the equipment subject of certification, in presence of potentially explosive atmospheres of Gas, Vapors, Mist (G) and
Dust (D). The equipment can be installed in ZONE 1 and in ZONE 21
Ex db IIB The type of electrical protection for the equipment is a flameproof enclosure, suitable for Gas Group IIB and IIA.
Ex h IIB The type of mechanical protection for the equipment is through liquid immersion "h", suitable for Gas Group IIB and IIA.
T4 Temperature Class of the equipment (maximum surface temperature 135°C)
Gb Equipment with "high" level of protection (EPL Gb), suitable for use in ZONE 1.
Ex tb IIIC The type of electrical protection for the equipment is a Dust tight enclosure, suitable for Dust Group IIIC.
Ex h IIIC The type of mechanical protection for the equipment is through liquid immersion "h", suitable for Dust Group IIIC.
T135°C The maximum surface temperature is 135°C
Db Equipment with "high" level of protection (EPL Db) suitable for use in ZONE 21.
EUM1 13 ATEX 1027 X
EU type examination certificate number issued by the notified body involved in the verify of Annex III of Directive 2014/34/EU.
16
Ex db IIB T4 Gb - Ex h IIB T4 Gb
Ex tb IIIC T135°C Db - Ex h IIIC T135°C Db
2460 II 2GD
EUM1 13 ATEX 1027 X