N
L1 L2 L3
工厂配置
用户自配
PE
PE
PE
N
PE L1 L3L2
380V.3～ N.PE.50Hz 380V.3～ N.PE.50Hz
3-2 Check Before Startup
After air handling unit is installed, before starting-up and testing, please check the following items firstly:
1. Check air handling unit to find whether components are loosened or not;
2. Check earth-grounding wire to find whether it is connected well or not;
3. Before starting fan, check air duct to find whether it is ventilated or not; Damper should not be in off position;
4. Check flexible duct or duct connecting apparatus;
5. All water pipes are connected well;
6. Check power supply, including short-circuit and circuit-break protection;
7. Drain pipes have been connected correctly;
8. Filter has been installed correctly without any building fragments and dust on it;
9. Check motor and fan bearing to find whether they run freely or not;
10. Hydraulic pressure testing and ventilation testing.
11. The wooden support under the fan base is taken out or not.
Fan
-Shut off switch before checking internal parts of fan;
-Check fan and motor components to find whether anti-vibration and flexible connection apparatus operate freely or not;
-Air handling unit is driven by belt and pulley. Please check tension degree of belt. The tension degree of belt is as follows
(Following picture);
-Check electrical connection apparatus of motor to find whether it accords with the provided wiring diagram or not;
-Check nameplate of motor to find whether its voltage, phase and electrical circuit accord with power on the spot or not;
-Check the running current of motor by ammeter; Compare it with the data on nameplate of motor.
Power of motor: Less than or equal to 5.5KW Direct
Startup Principle Diagram
Power of motor: Bigger than or equal to 7.5KW Y-Δ
Startup Principle Diagram
29
Starting &
Running
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