AL-KO AT4F Series, Operating And Assembly Instruction Manual

Page: 120 / 140

Translation of original operating instructions
120
AL-KO AT4F ATEX
7.3.8.4 Fan with belt drive
„
Inspect V-belt drive for soiling, damage and wear.
„
Check V-belt tension and retighten if necessary.
„
Check alignment of the V-belt pulleys.
„
Clean the V-belt drive at regular intervals.
„
The V-belts must be electrostatically conductive.
ATTENTION
When replacing V-belts in multi-groove drives, the entire V-belt set must always be replaced.
ATTENTION
Observe the manufacturer's documentation.
Clamping specification for V-belt drive
The correct belt tension is achieved when with the individual test force F
p
a belt deflection b according to the technical
data sheet has been reached. Alternatively, it can also be adjusted using frequency measurement.
Fig. 71 Checking the belt tension on the V-belt drive
L Span length F
p
Test load in N from AL-KO document or type plate
b Belt deflection under the test force F
p
7.3.8.5 EC fan
CAUTION
Risk of burns due to contact with hot surfaces.
„
Wait until the hot surfaces have cooled down.
„
Wear personal protective equipment.
„
Observe the manufacturer's documentation.
ATTENTION
Observe the manufacturer's documentation.
„
Check fan for hygienic condition, dirt, damage, corrosion, and a secure fastening.
„
Check the function of the protection devices.