Siemens SIPROCESS GA700, Operating Instructions Manual, Page: 192 / 224

WARNING
Maintenance during ongoing operation in a hazardous area
There is a danger of explosion when carrying out repairs and maintenance on the device in
a hazardous area.
● Isolate the device from power.
- or -
● Make sure that the atmosphere is explosion-free (hot work permit).
WARNING
Impermissible accessories and spare parts
Danger of explosion in areas subject to explosion hazard or device damage.
● Only use original accessories or original spare parts.
● Observe all relevant installation and safety instructions described in the instructions for
the device or enclosed with the accessory or spare part.
CAUTION
Hot parts in the device
After switching off the device, there may still be some temperatures at the device for some
time which may cause burns if the skin is not protected.
● Make sure you observe the waiting time listed in Chapter →Technical specifications
(Page 87) or on the device before you start maintenance.
WARNING
Open enclosure
Danger of explosion in hazardous areas as a result of hot components and/or charged
capacitors inside the device.
Follow these steps when you open the device in a hazardous area:
1. Isolate the device from power.
2. Make sure you observe the waiting time listed in Chapter →Technical specifications
(Page 87) or on the warning label before you open the device.
3. Sensor inlet and outlet (visual inspection)
Exception: Devices exclusively having the type of protection "Intrinsic safety Ex i" may also
be opened in an energized state in hazardous areas.
CAUTION
Hot surface
Following shutdown, installed parts (e.g. measuring head) may still have temperatures above
60 °C. Wait until the analyzer module has cooled down before dismounting.
Service and maintenance
9.1 Safety instructions
Field device
80
Operating Instructions, 05/2015, A5E35640463-02