Integrative notes to the operating manual for magnetic coupling centrifugal pumps conforming to the ATEX 94/9/CE directive TCK... - TBK... – TBAK…
8
3.1 – FIRST AID
If unfortunately hazardous substances have been inhaled or have come in touch with the human body, the necessary
medical steps must be immediately taken by skilled and authorized persons according to the
information
shown
in the customer’s factory.
4 – TECHNICAL FEATURES OF THE PUMPS
The instructions of the present booklet refer to the following series of pumps
(tab. 4)
.
NOTE: The capacity and the pressure
indicated
must be considered as a guideline and correspond to
the maximum
values which can be reached in standard conditions of use at ambient temperatures.
Tab. 4
SERIES
FEATURES
TCK
Single-stage magnetic coupling centrifugal pumps - Closed impeller version - Delivery rate up to
280 m
3
/h, max. pressure 14 bar – Flange type: PN 16 (1)
TBK
Multi-stage magnetic coupling centrifugal pumps - Closed impeller version - Delivery rate up to 35
m
3
/h, max. pressure 16 bar – Flange type: PN 40 (1)
TBAK
Multi-stage magnetic coupling centrifugal pumps - Closed impeller version - Delivery rate up to 35
m
3
/h, max. pressure 16 bar – Flange type: PN 40 (1)
NOTE: - (1): The pumps of this range have been designed for a max. operation temperature of 120°C, which does
NOT
have any relation with the classification of the temperatures according to the ATEX 94/9/EC Directive.
The pumps of this range have been designed for operating also with liquids at high temperatures. The temperature of
the liquid pumped is the most important parameter for determining the surface temperature reached by the pump and
therefore its classification according to the ATEX 94/9/EC Directive. For further information, please consult Chapter 7,
paragraph 7.5 in this booklet.
For particular uses, special versions of our pumps may be taken into account. For this purpose, please contact
POMPETRAVAINI.
5 – INSTALLATION OF THE PUMP
5.1 – COUPLING TO THE ELECTRIC MOTOR
The correct alignment of the pump drive shaft to the motor shaft is of fundamental importance for the correct operation
and for respecting the safety guarantees of the pump.
In case of pumps supplied with a bare shaft, coupling must be carried out according to the instructions shown in Chapter
7 under paragraph 7.1 of the Operator’s Manual. In case of pumps in enbloc version or pumps fitted to the base
supplied already with assembled electric motor, checking of alignment must be carried out before starting the pump. For
this purpose, follow the instructions shown in Chapter 7 under paragraph 7.2 of the Operator’s Manual.
If the pumps are supplied without electric motor or with the electric motor not yet installed, the alignment must be carried
out according to the instructions of Chapter 7 under paragraph 7.1 of the Operator’s Manual.
POMPETRAVAINI cannot be held liable for any wrong choice of the motor if supplied or installed
by the end-user. If the Confirmation of order foresees the execution of mechanical assembling
of the pump and of the motor, POMPETRAVAINI may reject the execution if the motor supplied
by the end-user does not have a safety level equal or higher to that of the pump to which it must
be coupled. The choice of the motor must always be done from the models which have a
certification according to ATEX 94/9/EC, which guarantees a safety level equal or higher than
that of the pump and is able to satisfy the electrical parameters required for the correct
operation of the pump.
If the pumps are supplied without
flexible
coupling and this coupling has been chosen by the user, it is
suitable to use a model certified according to the ATEX 94/9/EC Directive for a safety level equal or
higher than the one of the pump to which it will be mounted. We recommend strongly to select a model
which ensures the rotation without any contact between mechanical parts in case of malfunction of the
rubber elements so to avoid any impacts and sparks between rotating metal parts. The purpose of the
flexible
coupling is to transmit all the mechanical power to the pumps necessary for the job. The load
factor recommended must be equal or higher to 2.5 for pumps of Group II, Category 2 and Category 3.
If the coupling has been chosen and installed by the user, POMPETRAVAINI does not have any
responsibility for any trouble arising from a wrong selection or installation.
The pump must never be used when the
flexible
coupling presents signs of wear or deterioration of the elastic or metal
parts. Checking of the alignment conditions and wear of the elastic coupling must be carried out by
authorized and