Drive Unit; Operation In An Explosive Atmosphere - Wilo Vardo WEEDLESS-F Instrucciones De Instalación Y Funcionamiento

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4.1.1

Drive unit

6
5
Fig. 2: Drive unit components
4.1.2 Hydraulics
5
4
Fig. 3: Hydraulics components
4.1.3 Material
4.2 Operation in an explosive atmo-
sphere
236
Product description
1 Motor
2 Oil drain line
1
3 Motor plate
4 Bearing lantern
2 5 Output shaft
6 Gear
The drive unit is composed of a motor with a mounted gear and a mixer lantern with an
3
additional bearing. It is fixed in place via the motor plate.
4
1 Shrink disc
1
2 Mixer shaft
3 Propeller blade
2
4 Cover cap
5 Hub
The mixer shaft is connected to the output shaft by a shrink disc. The hub is mounted
3
on the other end of the mixer shaft. The hub is fixed in place with two tensioning kits.
The propeller blades are mounted on the hub. A union insert adjusts and fixes the set-
ting angle (30°, 35°, 40° or 45°) of the propeller blades. A cover cap is fitted to the hub
to protect the tensioning kits and the components fixing the propeller blades in place
against corrosion and dirt.
▪ Motor housing: EN-AC
▪ Gear housing: EN-GJL-200 (ASTM A48 Class 30)
▪ Output shaft: Steel (C45)
▪ Motor plate:
– Steel, hot-galvanised
– Stainless steel A2 (AISI 304/304L)
– Stainless steel A4 (AISI 316L/316Ti)
▪ Mixer shaft:
– Steel, coated
– Stainless steel A2 (AISI 304/304L)
– Stainless steel A4 (AISI 316L/316Ti)
▪ Rotary shaft seals: FKM
▪ Hub: PUR/A4 (AISI 316L/316Ti)
▪ Propeller blades: PUR
▪ Cover cap: PUR
The motor housing, gear housing and steel mixer shaft are triple-coated for corrosion
protection.
Approval according to
Vardo WEEDLESS-F
Vardo WEEDLESS-S
Vardo WEEDLESS-M
Key: − = not available/possible, o = optional, • = as standard
ATEX FM
o −
− −
o −
WILO GVA GmbH 2019-02