Operation With Frequency Converter; Type Key; Technical Data - Wilo Atmos TERA-SCH 150-555 Notice De Montage Et De Mise En Service

4.1.1 Hydraulics
4.1.2 Motor
4.1.3 Seal
4.2 Operation with frequency con-
verter
4.3

Type key

4.4

Technical data

Installation and operating instructions Wilo-Atmos TERA-SCH
Product description
Wilo control devices allow
ƒ
Optimisation of the pump output for the demands of the installation
ƒ
Particularly economically efficient pump operation
The pump consists of axially divided spiral housing (with replaceable wear rings) and
cast-on pump support feet. The impeller is a double suction closed radial impeller. The
high head hydraulic presents a double volute design to minimise the radial forces on the
shaft assembly. The pump shaft bearings are greased for life lubricated radial ball bear-
ings.
The system is driven by IEC standard motors in a three-phase current version.
NOTICE
Use a heat-resistant mains connecting cable in systems where fluid temperatures
exceed 90 °C!
The fluid pump is sealed via mechanical seals in accordance with EN 12756 or by stuff-
ing box packings.
Operation on the frequency converter is permitted. Refer to the documentation from
the motor manufacturer for the relevant requirements and observe its contents.
Example: Wilo-Atmos TERA-SCH 250/360-75/4-L1
Product family
Atmos
Series
TERA
Construction (splitcase pump, horizontal)
SCH
Nominal diameter DN of pressure port
250
Nominal diameter of the impeller in mm
360
Rated motor power P
75
Number of poles
4
Material configuration : Bronze impeller
L1
General
Date of manufacture [MFY]
Mains connection [U/f]
Power consumption [P ]
1
Rated power [P ]
2
Rated speed [n]
Max. delivery head [H]
Max. volume flow [Q]
Permissible fluid temperature [t]
Permissible ambient temperature
[t]
Permissible operating pressure
[P ]
max
Flanges
Permissible fluids
Protection class
in kW
2
See rating plate
See motor rating plate
See motor rating plate
See motor rating plate
See rating plate
See rating plate
See rating plate
-20 °C to +100 °C
+40 °C
10/16 bar (depending on type)
PN 16 in accordance with EN 1092-2
– Heating water in accordance with VDI 2035
– Cooling/cold water
– Water-glycol mixture up to 40 % vol.
– Raw water
IP55
en
11