Technical Data; Operating Modes; Scope Of Delivery - Wilo RexaBloc RE Notice De Montage Et De Mise En Service

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3.2.4. Seal
Sealing on the fluid side is achieved by a bidirec-
tional mechanical seal. Sealing on the motor side
is achieved by a rotary shaft seal.
3.2.5. Materials
• Hydraulic housing: EN-GJL-250
• Impeller: EN-GJL-250
• Bearing housing: EN-GJL-250
• Shaft: 1.4021
• Static gaskets: NBR
• Seal
• On fluid side: SiC/SiC
• On motor side: NBR
• Motor housing: EN-GJL-250
3.2.6. Drive
The hydraulics is driven by IEC standard motors
in "B5" construction. For more information about
the motor and the monitoring equipment present,
see the installation and operating instructions for
the motor.
3.3. Operation in an explosive atmosphere
The hydraulics must not be operated in an explo-
sive atmosphere!
3.4. Operation with frequency converters
NOTE
Also note all the information in the operating
and maintenance manual for the motor!
Operation on a frequency converter is possible.
The following parameters must be observed:
• The maximum speed must not exceed 1450 rpm.
• Continuous duty with a volume flow of
Q < 0.7 m/s should be avoided.
opt
• The circumferential speed must not fall below a
minimum of 13 m/s.
NOTE
The circumferential speed can be calculated as
follows: v = n · d · π / 60,000
Key:
- n = speed in rpm
- d = impeller diameter in mm
- v = circumferential speed in m/s

3.5. Operating modes

See the rating plate or installation and operat-
ing instructions for the motor to see the possible
operating modes.
3.5.1. Operating mode S1 (continuous duty)
The motor can operate continuously at the rated
load without exceeding the permissible tempera-
ture.
3.5.2. Operating mode S2 (short-time duty)
The maximum operating period for the motor is
specified in minutes, e.g. S2-15. The pause must
last until the machine temperature no longer dif-
34
fers from the temperature of the coolant by more
than 2 K.
3.5.3. Operating mode S3 (intermittent operation)
This operating mode defines a combination of
periods of operation and standstill of the motor.
With S3 operation, the values given are always
calculated based on a period of 10 minutes.
Example: S3 25%
Operating time 25% of 10 min = 2.5 min / stand-
still time 75% of 10 min = 7.5 min

3.6. Technical data

The following technical data can be found on the
rating plate.
Max. delivery head:
Max. volume flow:
Rated power required from
hydraulics:
Pressure connection:
Suction connection:
Fluid temperature:
Size of standard motor:
Standard speed:
Weight:
The total weight is calculated from the weight
of the hydraulics and the weight of the motor
(see rating plate on motor).
3.7. Type key
Example: Wilo-RexaBloc RE 08.52W-260DAH132M4
RE Series
08 Size of pressure connection e.g. 08 = DN 80
52 Internal performance coefficient
Impeller shape
W W = Vortex impeller
E = Single-channel impeller
260
Impeller diameter in mm
Flange connections
D D = DN connection
A = ANSI connection
Material version
A A = standard version
Y = special version
Type of installation
H V = vertical
H = horizontal
132M Size of standard motor
Number of poles for the necessary hydraulics
4
speed

3.8. Scope of delivery

• Version:
• Unit: Sewage hydraulics with built-on standard
motor
• "Bare shaft" version: Sewage hydraulics without
motor
PRODUCT DESCRIPTION
H
max
Q
max
P
2
X-]
[-X
t
Type key
n
M
hydr
WILO SE 12-2015 V05 DIN A4