1. Period of Inspection

1.1 An inspection on busduct once a year or once every two years is recommended. If busduct system is installed in unfavourable conditions such as, temperature and/or humidity is high, there is a lot of dust or in similar environment, the periodical inspection must be conducted.

1.2 In the event of the following unusual conditions, inspection must be carried out immediately in each case:
a.) After severe earthquake
b.) After being involved in a fire
c.) After being exposed to water
d.) After an electrical fault

2. Maintenance and Routine Inspection 2.1 Inspection on External
Appearance

Check whether :-
There is any deformation, damage, dirt, etc throughout the whole length of busduct systems
There is any dislocation, bending and other abnormality of the connecting covers, hangers and plug-in appliances

2.2 Environmental Inspection
The environment, where the busducts are installed, sometimes changes after its installation. Check whether the environment has become hazardous due to water, moisture, high temperature, corrosive gas, immoderate vibration, dust, etc.

2.3 Inspection for Abnormal Heat
An Infra Red Thermography instrument is recommended to detect any abnormal heat and measure the operating temperature of busduct system.
As an option, a thermal indicator can be placed onto the busduct housing. If the temperature rise of the busduct housing exceeds the limit, the colour of the indicator will change. e.g. from white to red colour.

2.4 Inspection on Connection Sections
Check whether:-
Busduct joint section is securely fastened with joint bolts and both sides of the busduct joint section are held with a pair of leaf springs.
Leaf springs are almost !at and the pin holes are inserted with snap pins.
Busduct is supported by vertical spring hangers, vertical hangers, edgewise / !atwise horizontal hangers according to manufacturer’s requirement and recommendation.
All the connecting parts, such as leaf springs, hangers, busduct joints, joint covers, etc are "xed precisely.

2.5 Inspection on Load Condition
After the busduct installation, increase of load is expected. An inspection has to be carried out to ensure that the total conn ected load does not exceed the rated current of the busduct before the load is increased.

2.6 Measurement of Insulation Resistance
Measure the insulation resistance between each conductor and between conductor and housing. When the measurement is carried out, the electrical loads and connected equipment shall be disconnected.

2.7 Inspection on Rust or Peeling of Paint on Busduct Housing
If there are sign of peeling paint or rust on the busduct housing, cleaning work and touch-up painting are recommended.

The metal housing /enclosure of busduct must not be dismantled by any parties without the o#cial authorization from the manufacturer for any purposes. Any violation or abuse will result the respective party to be responsible for all the consequences and compensation. Furthermore, the manufacturer reserves the right to void the warranty if any proof of violation or any sign of abuse is found.