Lowara ESHS ATEX, Installation, Operation And Maintenance Manual

Page: 19 / 102

en - Original instructions
19
WARNING:
Improper use of the pump may create
dangerous
conditions and cause
personal injury and damage to
property.
An incorrect use of the product leads to the loss of
the warranty.
Examples of incorrect use:

Liquids not compatible with the pump
construction materials

Potable liquids other than water (for
example, wine or milk)
Examples of incorrect installation:

Location where the air temperature is
high or there is poor ventilation.

Outdoor installations where there is no
protection against rain or freezing
temperatures.

Environments with potentially explosive
atmospheres, due to the presence of
flammable substances in the form of
dust.

Underground parts of mines and in parts
of surface installations of such mines
where only equipment of Group I can be
expected to use.
NOTICE:

Do not use this pump to handle liquids
containing abrasive, solid, or fibrous
substances.

Do not use the pump for flow rates
beyond the specified flow rates on the
data plate.
If you have purchased a pump without a motor,
make sure that the motor is suitable for coupling to
the pump.

The motor shall be a B35 or B5 mounting
arrangement type.

In case of variable speed drive (VSD)
application, contact Xylem or the
Authorised Distributor.
Special applications
Contact Xylem or the Authorised Distributor in the
following cases:

If the density and/or viscosity value of the
pumped liquid exceeds the value of
water, such as water with glycol; as it
may require a more powerful motor.

If the pumped liquid is chemically treated
(for example softened, deionized,
demineralized etc.).

Any situation that is different from the
ones that is described and relate to the
nature of the liquid.
3.2 Pump denomination
See Figure 3 on page 88 for an example and an
explanation of the denomination code for the pump.
See Figure
2 on page 85 for an explanation and
location of the ATEX adhesive label.
3.3 Nameplate
The nameplate is located on the fan cover. The
name plate lists key product specifications. For more
information, see Figure
1 .
The nameplate provides information regarding the
impeller and casing material, the mechanical seal
and their materials. For more information, see Figure
4 on page 91.
3.4 Pump description

Connection dimensions according EN
733 (models 32-
125…-200; 40-125…-
250; 50-
125…-250; 65-160…-250; 80-
160…-250).

Volute casing pump with back pull out
power end.
3.5 Material
The metallic parts of the pump that come in contact
with liquid are made of the following:
Material
code
Material casing /
impeller
Standard/
Optional
SS Stainless steel /
Stainless steel
Standard
SN Stainless steel /
Stainless steel
Standard
3.6 Mechanical seal
Unbalanced single mechanical seal acc. EN 12756,
version K.
3.7 Application limits
Maximum working pressure
Figure 5 on page 93 shows the maximum working
pressure depending on the pump model and the
temperature of the pumped liquid.
P
1max
+ P
max
≤ PN
P
1max
Maximum inlet pressure
P
max
Maximum pressure that is generated by the
pump
PN Maximum operating pressure
Liquid temperature intervals
Figure 5 on page 93 shows the working temperature
ranges.
NOTICE:
For T4 operation the maximum temperature of
the pumped fluid must not exceed +90°C
(+194°F).
Maximum starts per hour