Komfovent VERSO Pro P, Инструкция по установке и обслуживанию

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UAB KOMFOVENT we reserve the right to make changes without prior notice
V-C5.1_21-01
10
EN
2. VERSO AIR HANDLING UNITS CONSTRUCTION
2.1. Fans
VERSO air handling units are equipped with radial fans with direct drive.
Motors of the fans with backward curved blades must be con-
trolled by frequency converters. Frequency set by the frequency
inverter cannot exceed frequency data specified in the print out.
Note: fan type is specified in the print out.
Measuring device for determining air volume
The differential pressure compares the static pressure in front of the
inlet ring with the static pressure in the inlet ring of the narrowest point.
The differential pressure between the static pressures is related to
the air volume via the energy conservation rate as follows: 10080 700 381
= × = × =
w
p k
where k takes into account the specific ring characteristics.
Example: If differential pressure of 700 Pa is measured for size 630,
the air flow rate can be calculated:
10080 700 381
= × = × =
w
p k
(m
3
/h).
¨32
Ø
DS
a
ØLA
Ø32
–
+
Δ
p
w
Cleaning and Inspection of Fans and Fan Space
Polluted fans decrease efficiency.
Before performing any inspection work, check whether the unit is
switched off from the electric power supply.
Inspect and clean the fan impellers to remove possible dirt deposits. Check the impeller to make
sure that it is not out of balance. Clean or brush off the fan motor. It can also be cleaned by carefully wip-
ing it with a damp cloth that has been dipped in a solution of water and dishwashing detergent. Clean
the fan space, if needed.