82
Low Voltage Switch Gear
Appendix
Installation
Mounting
Make sure to use specified wire size, mounting screw size, mounting
screw number, and DIN rail size.
Tightening Screw
Tighten each screw securely by specified tightening torque. Loose
tightening may cause a fire by excessive heating.
Combination
Please use only OMRON product combinations in case of thermal
relay, timer block and auxiliary contact block etc.
Wrong-combinations may result in damage to contactors.
Mounting direction
Some products have a defined specific mounting direction. Please
refer to datasheet before use.
Operation ambience
Dust
Dust on the surface of the contacts could result in contact malfunc-
tioning. Take countermeasure in excessive dusty surrounding.
Temperature, humidity
Use contactors within the temperature and humidity conditions spec-
ified in datasheet. To use or store contactor in excessive temperature
or humidity may result in malfunction of contact by organic film com-
posed by sulfication and oxidation on the surface of the contacts.
Use contactors within the temperature and humidity conditions spec-
ified in the datasheet, to prevent contactors from insulation resis-
tance failure by condensation or insulation resistance deterioration
by tracking.
Gas
NH
3
, H
2
S, SO
2
, CI
2
, Si and NO
2
have bad effects on a contactor.
With these gases, a corrosive metal film ist generated on the surface
of the contacts and could result in contact malfunctioning. Use a con-
tactor in low humidity and no corrosive gas surroundings.
Oil
Do not use a contactor in places where oil is sprayed onto the con-
tactor. It will cause cracks on polymer parts.
Shock and vibration
Do not use a contactor in places where there is excessive shock or
vibration. It may cause malfunctioning.
Storage
Store contactors in a place with no direct sunshine or ultraviolet rays.
It will cause crack on polymer parts.
When contactors are to be stored for a long time, they must be stored
with care. Though it generally depends where contactors are stored,
deterioration of contacts may occur after long storage. Please check
the characteristics before use after long time storage.
