Product description
en
Installation and operating instructions Wilo-Vardo WEEDLESS-F
11
4.1.1
Drive unit
1
6
3
2
4
5
Fig. 2: Drive unit components
1
Motor
2
Oil drain line
3
Motor plate
4
Bearing lantern
5
Output shaft
6
Gear
The drive unit is composed of a motor with a mounted gear and a mixer lantern with an
additional bearing. It is fixed in place via the motor plate.
4.1.2
Hydraulics
1
2
3
5
4
Fig. 3: Hydraulics components
1
Shrink disc
2
Mixer shaft
3
Propeller blade
4
Cover cap
5
Hub
The mixer shaft is connected to the output shaft by a shrink disc. The hub is mounted
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.
4.1.3
Material
ƒ
Motor housing: EN-AC
ƒ
Gear housing: EN-GJL-200 (ASTM A48 Class 30)
ƒ
Output shaft: Steel (C45)
ƒ
Motor plate:
–
Steel, hot-galvanised
–
Stainless steel A2 (AISI 304/304L)
–
Stainless steel A4 (AISI 316L/316Ti)
ƒ
Mixer shaft:
–
Steel, coated
–
Stainless steel A2 (AISI 304/304L)
–
Stainless steel A4 (AISI 316L/316Ti)
ƒ
Rotary shaft seals: FKM
ƒ
Hub: PUR/A4 (AISI 316L/316Ti)
ƒ
Propeller blades: PUR
ƒ
Cover cap: PUR
The motor housing, gear housing and steel mixer shaft are triple-coated for corrosion
protection.
4.2
Operation in an explosive atmo-
sphere
Approval according to
ATEX
FM
Vardo WEEDLESS-F
o
−
Vardo WEEDLESS-S
−
−
Vardo WEEDLESS-M
o
−
Key: − = not available/possible, o = optional, • = as standard
For use in explosive atmospheres, the mixer and the drive unit must be marked as fol-
lows on the rating plate:
