Electrolux WD4130 - Air Volume Control WD4240

23
Air volume control WD4240
Remove cover panel for the fan inverter at the rear of the machine.
Example:
WD4240 with a 19 kW power must have an optimum air volume of
540-580 m
3
/h. (Empty machine and no heat).
Pressure drop is measured by removing temp. sensor (1) and adapt a hose
connected to a pressure gauge. There is a special program hidden "Drying
no heat" that can be activated when adjusting the fan.
A
Measured pressure drop 180 Pa at 57 Hz is between the lines and
shows that the air flow is between 510 and 540 m
3
/h. This shows that the
frequence is correctly set on the frequence controller for the fan.
B
Measured pressure drop 220 Pa at 49 Hz is above the lines and shows
that the air flow is below 510 m
3
/h. The fan speed is too low. Increase the
frequence on the frequence controller.
C
Measured pressure drop 140 Pa at 59 Hz is below the lines and shows
that the air flow is above 540 m
3
/h. The fan speed is to high. Decrease the
frequence on the frequence controller.
• Pressuredropismeasuredbyremovingsensor(1)andadaptahose
connected to a pressure gauge. There is a special program hidden
"Drying no heat" that can be activated, when adjusting the fan.
Installation
15
2981, 2982
15
16
1