Wilo Padus UNI - Monitoring Devices; Operating Modes; Operation with Frequency Converter; Operation in an Explosive Atmosphere

en Product description
10 WILO SE 2019-02
4.2 Monitoring devices
Monitoring of motor winding
The thermal motor monitoring protects the motor winding from
overheating. Temperature limiter with bimetallic strip is fitted as
standard.
Thermal motor monitoring is self-switching for single-phase cur-
rent motors, i.e. if the motor is switched off due to overheating
and then cools down, it is automatically 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 ex-
ceeding 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 temperature
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
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] See rating plate
Fluid temperature [t] 3…40°C
Protection class IP68
Insulation class [Cl.] F
Speed [n] See rating plate
Max. switching frequency 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M05... G2"
* 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 im-
mersed for at least 1min.
Statement of date of manufacture
The date of manufacture is stated in accordance with ISO8601:
JJJJWww
ƒ JJJJ = year
ƒ W = abbreviation for week
ƒ ww = calendar week
4.7 Type key
Example: Wilo-Padus UNI M05B/T15-540/A
UNI Series
M Impeller shape=multi-channel impeller
05 Nominal diameter of pressure connection
B
Material version
- n/a = standard version
- B = version in V4A
T Mains connection version: M = 1~, T = 3~
15 /10 =rated power P
2
inkW
5 Mains connection frequency: 5 =50Hz, 6 =60Hz
40 Key for rated voltage
A
Additional electrical equipment:
n/a = with bare cable end
A= with float switch and plug
VA = with vertical float switch and plug
P= with plug
4.8 Scope of delivery
ƒ Pump with 10m (33ft) cable
ƒ Single-phase current version with
– Shockproof plug
– Float switch and shockproof plug
ƒ Three-phase current version with