21
Air volume control WD4130
Remove cover panel for the fan inverter at the rear of the machine.
Example:
WD4130 with a 10 kW power must have an optimum air volume of
310-340 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 190 Pa at 57 Hz is between the lines and
shows that the air flow is between 310 and 340 m
3
/h. This shows that the
frequence is correctly set on the frequence controller for the fan.
B
Measured pressure drop 230 Pa at 51 Hz is above the lines and shows
that the air flow is below 310 m
3
/h. The fan speed is too low. Increase the
frequence on the frequence controller.
C
Measured pressure drop 160 Pa at 61 Hz is below the lines and shows
that the air flow is above 340 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
13
2981, 2982
13
14
1
