Klimawent WPA-P-N, Руководство по эксплуатации и обслуживанию, Страница: 8 / 12

8
portable radial fans
WPA
- P - N
04.06.2019
7. Operational Use
In case when the portable fan is applied for local exhaust (technological extraction), connect a
hose
(of adequate diameter)
to the suction ferrule. Additionally, the hose must be tipped with a
suitable suction nozzle. Example application with a magnetic suction hood is illustrated in the
Photo No.1a below.
Photo 1a Photo 1b
Portable fan working with a magnetic
hood during the welding Portable fan used for drying a humid wall
Photo 1
– Examples of application along with the hoods
When the portable fan is applied for general ventilation, it is important to introduce a hose (into
the ventilated room), whereby the hose
ought to be connected to
the suction ferrule or to the out-
let fitting piece of the fan.
In case of application for drying the humid walls of a room, simply put the fan into the room and
direct the air discharge onto the humid wall. The discharge hose must be conducted outside the
room.
As another option, the portable fan can be placed outside the building (the drying air has
to be
forced through an air supply hose into the humid room). Here, it is important to protect the fan
from atmospheric factors by a hood / cover. In this application, the suction
nozzle can be equip-
ped with a suction stand with a directing spout nozzle (see Photo No.1b).
In case when any defective function of the device occurs (e.g. improper
noises or the faulty out -
look of the device) follow steps as in Section 8.
8. Troubleshooting Guide
Table No.4
Problem Possible reason Corrective action
1 . Sudden and significant Pollutants, foreign objects (being Remove the pollutants; clean
drop in intake volume flow. obstacle / barrier do the air flow) the ventilation conduits.
have deposited at the inlet grill.
2 . Sudden vibrations of the fan Obstacle objects reducing the Disconnect the fan from the
are occurring. air flow got stack at the impeller. power supply system, and
remove the obstacle.
The impeller is defective. Replace the impeller with motor
for a new one.
3 . Noisy work of the fan Incorrect impeller rotation sense. Change the impeller rotation
along with small volume flow. sense by changing the phase
connection sequence
(three-phase fans only).