Trane CCEB, Установка, эксплуатация и обслуживание

Страница: 70 / 111

7.7 Lighting
Depending on the number of delivered (optional) lamps, the assignment of the switches and junc-
tion boxes can be found below:
1 Lamp
1 switch
> 1 <= 4 Lamp 1 switch 1 junction box
> 4 <= 8 Lamp 1 switch 2 junction box
> 8 <= 12 Lamp 1 switch 3 junction box
The lamps are mounted and supplied with one side connected and one side loose cables, with a
sufficient length to be routed to the nearest junction box or the next switch.
The AHU will be delivered in parts, and for this reason the lights have to be connected on site.
If the AHU will be equipped on site with lights, it is to make sure that in humidifier and wet sections
(and air downstream), such as…
- humidifier sections
- sections with condensate, such as cooling sections
lighting with an at least protection of IP65 were used.
Switches or junction boxes mounted on the outside of rooftop units must also have at least protec-
tion class IP65.
For units with integrated control and lighting, an additional power supply for the lighting must be
provided and separated from the power supply for the control cabinet. This ensures that the light
also can be switched on during repair work, despite repair switch is switched off (prerequisite for
access to the AHU).
8 Commissioning
8.1 Preliminary steps
- Clean thoroughly the AHU and all components of dust and other debris.
- Remove all loose parts like tools, etc. and documentation from the unit. Such parts can be
sucked in by the fan and lead to its destruction.
- Ensure that the duct pressure corresponds to the pressure for the nominal air flow and the
pressure specified in the technical data sheet.
- Ensure that all planned filters are mounted. Not mounted filters can overload the fan motor.
- All cables must be checked for damage to the insulation and replaced if necessary.
Here are given some points, which could cause problems after transport or not appropriate unit
handling.
- Rotate the impeller of the fan by hand, to check whether it rotates freely.
-
Check that the screws of variable pulleys are tightened
– refer to
Figure 123 , tightening torque
depends on the type of bush, according to Table 5.
Socket 1108 1210 1215 1610 1615 2012 2517
Nm 5,7 20 20 20 20 32 50