Monitoring Devices; Operating Modes; Operation With Frequency Converter; Operation In An Explosive Atmosphere - Wilo Padus UNI Installation And Operating Instructions Manual

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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]
Mains connection [U/f]
Power consumption [P ]
1
Rated power [P ]
2
Max. delivery head [H]
Max. volume flow [Q]
Activation type [AT]
Fluid temperature [t]
Protection class
Insulation class [Cl.]
10
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
See rating plate
3...40 °C
IP68
F
Product description
Speed [n]
Max. switching frequency
Max. immersion depth [8]
Cable length (standard version) 10 m
Explosion protection
Operating modes
Immersed [OTs]
Non-immersed [OTe]
Pressure connection
UNI M05...
* 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
Material version
B - n/a = standard version
- B = version in V4A
T Mains connection version: M = 1~, T = 3~
15 /10 = rated power P
2
5 Mains connection frequency: 5 = 50 Hz, 6 = 60 Hz
40 Key for rated voltage
Additional electrical equipment:
n/a = with bare cable end
A 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
See rating plate
30/h
See rating plate
-
S1
S2-15, S3 10%*
G2"
in kW
WILO SE 2019-02