Monitoring Devices; Operating Modes; Operation With Frequency Converter; Operation In An Explosive Atmosphere - Wilo Padus UNI Einbau- Und Betriebsanleitung

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4.1.4 Material
▪ Pump housing: PP-GF30
▪ Impeller: PP-GF30
▪ Motor housing: 1.4301 (AISI 304)
▪ Shaft: 1.4401 (AISI 316)
▪ Seal on the fluid side: SiC/SiC
▪ Seal on the motor side: C/Cr
▪ Static seal: NBR (nitrile)
NOTICE! In material version "B", all parts that come in
contact with the fluid are made of stainless steel
1.4401 (AISI 316).
4.1.5 Fitted accessories
Float switch
In the "A" and "VA" 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 using the float
switch.
Plug
In the "P" and "A" version, a shockproof plug is attached
for single-phase AC motors and a CEE plug is attached
for three-phase current motors. The plug is designed for
use in commercially available shock-proof or CEE sock-
ets and is not overflow-proof.
4.2

Monitoring devices

Monitoring of motor winding
The thermal motor monitoring protects the motor wind-
ing from overheating. Temperature limiter with bimetal-
lic 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 automati-
cally 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.
36
Product description
Operating mode S3: Intermittent periodic duty
This operating mode defines a switching cycle in a com-
bination 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.]
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 immersed for at least 1 min.
Statement of date of manufacture
The date of manufacture is stated in accordance with
ISO 8601: JJJJWww
▪ JJJJ = year
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
See rating plate
30/h
See rating plate
-
S1
S2-15, S3 10%*
G2"
WILO SE 2019-02