Wilo Rexa UNI User Manual

en Product description
10 WILO SE 2017-03
4.1.4 Material
▪Pump housing: PP-GF30
▪Impeller: PP-GF30
▪Motor housing: 1.4301
▪Shaft: 1.4401
▪Seal on the fluid side: SiC/SiC
▪Seal on the motor side: NBR (V05), C/Cr (V06)
▪Seal, static: NBR
4.1.5 Fitted accessories
Float switch
In the “A” version the pump is equipped with a float
switch. Depending on the fill level, it is possible to
switch the pump on and off automatically, by using the
float switch.
Plug
In the “P” and “A” version, a shockproof plug is at-
tached for single-phase AC motors and a CEE plug is
attached for three-phase motors The plug is designed
for use in commercially available shock-proof or CEE
sockets and is not overflow-proof.
4.2 Monitoring devices
Monitoring of motor winding
The thermal motor monitoring protects the motor
winding from overheating. Temperature limiting with
bimetallic strip is fitted as standard.
Thermal motor monitoring is self-switching for single-
phase current motors. I.e. if the motor is switched off
due to overheating and then cools down, it is automat-
ically switched on again.
For three-phase current motors, the thermal motor
monitoring must be connected in the switchgear or
plug.
4.3 Operating modes
Operating mode S1: Continuous duty
The pump can operate continuously at the rated load
without exceeding the permissible temperature.
Operating mode S2: Short-time duty
The maximum operating period is specified in minutes,
e.g.S2-15. The pause must last until the machine tem-
perature no longer differs from the temperature of the
coolant by more than 2K.
Operating mode S3: Intermittent periodic duty
This operating mode defines a switching cycle in a
combination of periods of operation and standstill.
Specified value (e.g. S325%) relates to the operating
time. The switching cycle has a duration of 10min.
If two values (e.g. S325%/120s) are specified, the first
value relates to the operating time. The second value
specifies the max. period of the switching cycle.
4.4 Operation with frequency converter
Operation on the frequency converter is not permitted.
4.5 Operation in an explosive atmosphere
Operation in an explosive atmosphere is not permitted.
4.6 Technical data
General
Mains connection [U/f] See rating plate
Power consumption [P
1
] See rating plate
Rated power [P
2
] See rating plate
Maximum delivery head
[H]
See rating plate
Max. volume flow [Q] See rating plate
Activation type [AT] See rating plate
Fluid temperature [t] 3...40 °C
Protection class IP68
Insulation class [Cl.] F
Speed [n] See rating plate
Max. switching fre-
quency
30/h
Max. immersion depth
[8]
See rating plate
Cable length (standard
version)
10 m
Explosion protection -
Operating modes
Immersed [OTs] S1
Non-immersed [OTe] S2-15, S3 10%*
Pressure connection
UNIV05... DN50, PN10
UNIV06... DN50/65, PN10
* Operating mode S325% is permitted if the necessary
motor cooling is guaranteed before the motor is
switched on again! To ensure the required cooling, the
motor must be completely immersed for at least 1min.!
4.7 Type key
Example: Wilo-Rexa UNI V05/T06-540/P
UNI Series

Wilo Rexa UNI Specifications

General

Brand	Wilo
Model	Rexa UNI
Category	Water Pump
Language	English