en
Installation and operating instructions • Wilo-Rexa PRO-S • Ed.01/2022-03
13
made of grey cast iron. Detachable connection cable with bare cable ends. Unit with Ex-rat-
ing as standard.
5.2
Materials
•
Pump housing: EN-GJL-250 (ASTM A48 Class 35/40B)
•
Impeller: EN-GJL-250 (ASTM A48 Class 35/40B)
•
Macerator: 1.4528/59 HRC (AISI 440B+Co)
•
Motor housing: EN-GJL-250 (ASTM A48 Class 35/40B)
•
Shaft:
–
Up to 2.5 kW: 1.4401 (AISI 316)
–
From 3.9 kW: Stainless steel AISI 1.4021 (420)
•
Seal on the motor side: C/MgSiO
4
•
Seal on the fluid side: SiC/SiC
•
Seal, static: NBR (nitrile)
5.3
Technical data
General
Date of manufacture* [MFY]
See rating plate
Mains connection [U/f]
See rating plate
Power consumption [P
1
]
See rating plate
Rated power [P
2
]
See rating plate
Max. delivery head [H]
See rating plate
Max. volume flow [Q]
See rating plate
Activation type [AT]
Direct
Fluid temperature [t]
3 … 40 °C (37 … 104 °F)
Fluid temperature, short-term
60 °C (140 °F) for 3 min
Protection class
IP68
Insulation class [Cl.]
F, optionally H
Speed [n]
See rating plate
Max. switching frequency
60/h
Cable length
10 m (33 ft)
Immersion depth, max.
20 m (66 ft)
Operating modes
Immersed
S1
Non-immersed
Up to 3.9 kW: S2-30 min; S3 25%
from 5 kW: S2-15 min; S3 10%
Discharge connection
Flange connection
DN 32/40, PN 10; ANSI B16.1, Size 1.5, Class 125
Oval connection
36 mm
Extended use
Explosion protection
IECEx, ATEX, FM
Operation on frequency converter
Allowed
*The date of manufacture is stated in accordance with ISO 8601: JJJJWww
•
JJJJ = year
•
W = abbreviation for week
•
ww = calendar week
5.4
Type key
Example:
Rexa PRO-S03-112A/21T011X540/O
Rexa
Submersible sewage pump
PRO
Series
S
Macerator
03
Nominal diameter of the discharge connection: DN 32/40
112
Hydraulics type
A
Material version: Standard
2
No. of poles
1
IE class
