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13 Inspections / Maintenance Checklist
Inspection schedule for Ex "d", "e" und "n"
(D = Detailed inspection, C = Close inspection, V = Visual inspection)
Check the following:
A
Devices
1
Equipment corresponds to EPL/zone requirement of the installation site
2
Equipment group is correct
3
Temperature class of the equipment is correct
4
Electric circuit designation of the equipment is correct
5
Electric circuit designation of the equipment is available
6
Enclosure, windows and glass-to-metal seals and/or joints are okay
7
There are no unauthorised modifications
8
There are no visible unauthorised modifications
9
Screws, cable entries (direct and indirect) and blind plugs are correct, complete and tight.
- Physical inspection
- Visual inspection
10
Joint faces are clean and undamaged, seals (if any) are okay
11
Joint widths are within the allowed limit values
12
Rated value, type and arrangement of the lamps are correct
13
Electrical connections are tight and fixed properly
14
Condition of the enclosure seal is okay
15
Fracture-proof encapsulation and hermetically sealed devices are undamaged
16
Restricted breathing enclosure is okay
17
Motor fans have sufficient clearance to enclosure and/or covers
18
Breathing and draining devices are okay
B
Installation
1
Appropriate cable and conductor types are used
2
There is no visible damage to cables and wires
3
Sealing of trunking, channels, pipes and/or conduits is okay
4
Sealing devices and terminal sleeves are correctly filled
5
The conduit system and the interface with mixed system are not damaged
6
Earth connections, including any supplementary potential equalisations are satisfactory
(for example, connections are properly fixed and conductor cross-sections are sufficient).
- Physical inspection
- Visual inspection
7
Fault loop impedance (TN systems) or earthing resistance (IT systems) is sufficient
8
Insulation resistance is sufficient
9
Automatic electrical protective devices respond within the allowed limit values
10
Automatic electrical protective devices are set correctly (auto-reset not possible)
11
Special operating conditions (if applicable) are observed
12
Cables and/or wires not in use are correctly terminated
13
Obstructions adjacent to flameproof joints are in accordance with IEC 60079-14
14
Installations with variable voltage/frequency are in accordance with documentation
C
Environmental effects
1
Equipment is adequately protected against corrosion, weather, vibration and other adver-
se factors
2
No undue accumulation of dust or dirt
3
Electrical insulation is clean and dry
NOTE 1 General: Equipment with both types of protection "d" and "e" is checked using a combination of both columns.
NOTE 2 Item B7 and B8: When using electrical test equipment, take into account that there could be an explosive atmosphere in the
vicinity of the equipment.
202162 / 815060300030
2011-02-10·BA00·III·en·00
Inspections / Maintenance Checklist
Type of
protection
"d"
Grade of inspection
D
C
V
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Control and Distribution Box
8150/5
Type of
Type of
protection
protection
"e"
"n"
D
C
V
D
C
V
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
13
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