en
10
Installation and operating instructions • Wilo-Rexa FIT-S • Ed.01/2022-03
•
Motor housing: 1.4301 (AISI 304)
•
Shaft: 1.4401 (AISI 316)
•
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
Speed [n]
See rating plate
Max. switching frequency
60/h
Cable length
10 m (33 ft)
Permissible immersion depth
with attached connection cable
[
8
]
7 m (23 ft)
Immersion depth, max.
20 m (66 ft)
Operating modes
Immersed
S1
Non-immersed
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
-
Operation on frequency con-
verter
-
*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
Ex-
ample:
Rexa FIT-S03-123A/21M015-523/P
Rexa
Submersible sewage pump
FIT
Series
S
Macerator
03
Nominal diameter of the discharge connection:
DN 32/40
123
Hydraulics type
A
Material version: Standard
2
Number of poles
1
IE class
M
Mains connection version:
•
M = single-phase current (1~)
•
T = three-phase current (3~)
15
Value/10 = rated power P
2
in kW
-
Not Ex-rated
5
Mains frequency: 5 = 50 Hz/6 = 60 Hz
23
Key for rated voltage
P
Additional electrical equipment:
•
O = with bare cable end
•
P = with plug (CEE 7/7)
•
A = with float switch and plug (CEE 7/7)
5.5
Scope of delivery
•
Pump
•
Installation and operating instructions
5.6
Accessories
•
Connection cable with fixed cable lengths:
–
1~ motor: up to max. 30 m (98 ft).
–
3~ motor: up to max. 50 m (164 ft).
•
External pencil electrode for monitoring the sealing chamber
•
Suspension unit for wet well installation
•
Pump support foot for portable installation
•
Level control devices
•
Fixation sets with anchor bolts
•
Fixation accessories and chains
•
Switchgear, relays and plugs
6
Installation and electrical connection
6.1
Personnel qualifications
•
Electrical work: qualified electrician
Person with appropriate technical training, knowledge and ex-
perience who can identify and prevent electrical hazards.
•
Installation/dismantling work: trained sewage technology pro-
fessional
Fixation and pipework in wet well and dry well installation, lift-
ing equipment, basic knowledge of wastewater facilities
6.2
Installation types
•
Vertical stationary wet well installation with suspension unit
•
Vertical portable wet well installation with pump support foot
6.3
Operator responsibilities
•
Observe locally applicable accident prevention and safety regu-
lations.
•
Observe all regulations for working with heavy loads and under
suspended loads.
•
Provide protective equipment. Ensure that the protective
equipment is worn by personnel.
•
Observe local sewage technology regulations for the operation
of sewage systems.
•
Avoid pressure surges!
Pressure surges can occur in long pressure pipes with steep ter-
rain. These pressure surges can lead to the destruction of the
pump!
•
Ensure the cooling time of the motor depending on the operat-
ing conditions and the size of the pump chamber.
