Wilo Wilo-Drain SP, Installation And Operating Instructions Manual

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ENGLISH
9
5 : (21) Complete pump set
11
Close coupled
Standard
12 With portable frame
13 On trolley
14 On trailer
21
Biblock
Standard
22
On base frame
23
On trolley
24
On trailer
31
With bearing
assembly
On base frame
35
Bareshaft
6 : (T) Motor power supply
T Three-phase
M Single phase
D Diesel
E Gasoline
N Without motor
7 :
(11) Installed power (in kW)
8 : (2) Number of pole for an electric motor
Number of cylinders for an engine
9 : (K) Motor options
Code Option for Description
[empty]
Electric motor
No option
K CTP sensor
S ON/OFF switch
A, B, C, E,
F, G, H, N
Engine Variants of pump sets with engine
10 :
(3B) ATEX marking
This section of the pump code is indicated only if pump is ATEX certified.
Marking is engraved on pump nameplate. Correspondence between
code and ATEX description is indicated in the following table :
Code Related ATEX marking
2
A ZONE 1 - CAT.2 - II 2G T(x)
B ZONE 1 - CAT.2 - II 2G - Exd IIB T4
C ZONE 1 - CAT.2 - II 2G - Exd IIC T4
D ZONE 1 - CAT.2 - II 2G - Exde IIB T4
E ZONE 1 - CAT.2 - II 2G - Exde IIC T4
3
A ZONE 2 - CAT.3 - II 3G T(x)
B ZONE 2 - CAT.3 - II 3G - Exd IIB T4
C ZONE 2 - CAT.3 - II 3G - Exd IIC T4
D ZONE 2 - CAT.3 - II 3G - Exde IIB T4
E ZONE 2 - CAT.3 - II 3G - Exde IIC T4
11 : (-X) Special design
The marking “x” corresponds to a specific design and is indicated at the
end of the construction code. The detailed data regarding the pump are
available in the acknowledgment of order.
5.2 TECHNICAL CHARACTERISTICS
5.2.1 MATERIALS

Materials
The following table indicates pump parts materials according to pump
material code (see chapter « 5.1 Type key).
Code Pump casing Impeller Shaft / sleeve Wear plate
F Cast iron Cast iron Stainless Steel
Cast iron or carbon
steel
E Cast iron SS 316 Stainless Steel Stainless Steel
Z
Cast iron +
zinc anode Bronze or stainless
steel
Stainless Steel
Bronze or stainless
steel
B Bronze Bronze Stainless Steel Bronze
X SS 316 SS 316 SS 316 Stainless Steel

Sealing
The following table indicates mechanical seal and gaskets materials
according to pump material code (see chapter « 5.1 Type key).
Code Pump size Mechanical seal Gaskets NRV
A All SiC/Ceram/FPM NBR NBR
B All SiC/Ceram/FPM FPM FPM
C
40 to 42 WC/SiC/PTFE PTFE PTFE
45 to 161 WC/SiC/PTFE (bellows) PTFE PTFE*
170 to 230 WC/SiC/PTFE PTFE No
F All Carbon/SiC/FPM NBR NBR
G All Carbon/SiC/FPM FPM FPM
H 45 to 161 Carbon/SiC/PTFE PTFE PTFE*
J All Carbon/SiC/EPDM EPDM EPDM
K All WC/WC/NBR NBR NBR
*Available up to size 2’’
5.2.2 PERFORMANCE AND OPERATING LIMITS
5.2.2.1 TEMPERATURE
Maximum working temperature will be the most restrictive temperature
selected in the tables hereafter :
Temperature range according casing material :
Cast iron -30 to +140°C
Stainless steel -40 to +140°C
Temperature range according gaskets :
NBR - 20 to +120°C
FPM -20 to +140°C
PTFE -40 to +140°C
EPDM -40 to +120°C
Temperature range according motor assembly :
Close coupled -40 to +75°C
Biblock or on baseframe -40 to +140°C
5.2.2.2 MAXIMUM WORKING PRESSURE
All pumps : 6 bar.
5.2.2.3 OPERATING RANGE & MINIMUM FLOW
S pumps are designed so that they can be used on the complete
hydraulic curve range.
Runing the pump at duty points on extreme points of the curve
will drive to a faster wear of some pump parts.
When the pump is used in an ATEX zone it is necessary to measure
the duty point and check that temperature increase corresponding
to each working condition is acceptable regarding selected surface
temperature.
The formula below gives the correspondence between surface
temperature / fluid temperature and pump efficiency :
T
o
=T
f
+

v

v
=[(g.H)/(c.

)]*(1-

)
With :
c=calorific capacity of fluid in J/Kg.K
g=gravity in m/s²
H=pump head in m
T
f
=liquid temperature in °C
T
o
=surface temperature in °C