
9.1.7.10
Touch up any damaged paintwork
If the paint is damaged, it must be repaired in order to protect the unit against corrosion.
Note
Paint system
Contact the Service Center before you repair any paint damage. They will provide you with
more information about the correct paint system and methods of repairing paint damage.
9.1.7.11
Repainting
WARNING
Repainting explosion-proof motors
The paint coat can become electrostatically charged where there is a thick coat. Electrostatic
discharges can occur. There is a risk of explosion if potentially explosive mixtures are also
present at this moment. This can result in death, serious injury or material damage.
You must comply with one of the following requirements when you repaint painted surfaces:
● Limit the total paint coating thickness according to the explosion protection group:
– IIB: Total paint coating thickness ≤ 2 mm
– IIC: Total paint coating thickness ≤ 0.75 mm for motors of group II (gas)
– III: Total paint coating thickness ≤ 0.45 mm for group III motors (dust)
According to tests, paint repair work up to the total paint coating thickness of the non-
conductive paint coating listed has also been examined and is harmless.
● Limit the surface resistance of the paint used:
– IIB, IIC, III: Surface resistance ≤ 1 GΩ for motors of groups II and III (gas and dust)
● Breakdown voltage ≤ 4 kV for explosion group III (dust only)
● Charge transfer limit:
– IIB: Limit value for the largest transferred charge < 30 nC
– IIC: Limit value for the largest transferred charge < 10 nC for group II motors (gas)
– III: Limit value for the largest transferred charge < 200 nC for group III motors (dust)
● Incapability, dangerous charge to be saved:
– IIB: Limit value for the maximum capacity ≤ 15 pF
– IIC: Limit value for the maximum capacity ≤ 5 pF for group II motors (gas)
– III: Limit value for the maximum capacity ≤ 10 pF for group III motors (dust)
See also
Machines without final paint coating (Page 27)
Maintenance
9.1 Inspection and maintenance
SIMOTICS XP 1MD4/1MD5
88
Operating Instructions 05/2015
Содержание SIMOTICS XP 1MD4
Страница 2: ...13 07 2015 11 26 V8 00 ...
Страница 10: ...Table of contents SIMOTICS XP 1MD4 1MD5 10 Operating Instructions 05 2015 ...
Страница 12: ...Introduction SIMOTICS XP 1MD4 1MD5 12 Operating Instructions 05 2015 ...
Страница 20: ...Safety notes 2 11 Ventilation SIMOTICS XP 1MD4 1MD5 20 Operating Instructions 05 2015 ...
Страница 26: ...Description SIMOTICS XP 1MD4 1MD5 26 Operating Instructions 05 2015 ...
Страница 40: ...Preparations for use 4 10 Converter operation SIMOTICS XP 1MD4 1MD5 40 Operating Instructions 05 2015 ...
Страница 50: ...Assembling 5 3 Installing the machine SIMOTICS XP 1MD4 1MD5 50 Operating Instructions 05 2015 ...
Страница 74: ...Operation 8 7 Faults SIMOTICS XP 1MD4 1MD5 74 Operating Instructions 05 2015 ...
Страница 90: ...Maintenance 9 2 Repair SIMOTICS XP 1MD4 1MD5 90 Operating Instructions 05 2015 ...
Страница 110: ...Disposal 11 4 Disposal of components SIMOTICS XP 1MD4 1MD5 110 Operating Instructions 05 2015 ...
Страница 126: ...Index SIMOTICS XP 1MD4 1MD5 126 Operating Instructions 05 2015 ...
Страница 127: ...AE EC Declaration of Conformity U161 AD EC Declaration of Conformity U163 AA R No 20000h U165 ...
Страница 128: ...Siemens AG Process Industries and Drives Postfach 48 48 90026 NÜRNBERG GERMANY www siemens com drives ...