SITRANS P, DS III series (7MF4.33.. 7MF4.34.. 7MF4.35..)
A5E03434645-01, 08/2011
31
9.
Close the vent valve on the negative side
①
.
10.
Open the differential pressure valve
③
by rotating it in half a turn.
11.
Check and if required correct the zero point in case of start of scale value 0 bar (4 mA).
12.
Close the stabilizing valve
②
.
13.
Fully open the differential pressure valves
③
and
④
.
14.
You can briefly open the drain valves
⑦
to clean the line. Close before steam starts to leak.
Servicing and maintenance
Basic safety instructions
WARNING
Impermissible repair of explosion protected devices
Danger of explosion in areas subject to explosion hazard.
● Repair must be carried out by Siemens authorized personnel only.
WARNING
Impermissible accessories and spare parts
Danger of explosion in areas subject to explosion hazard.
● 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.
WARNING
Maintenance during continued 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 -
● Ensure that the atmosphere is explosion-free (hot work permit).
WARNING
Commissioning and operation with pending error
If an error message appears, correct operation in the process is no longer guaranteed.
● Check the gravity of the error
● Correct the error
● If the device is faulty:
– Take the device out of operation.
– Prevent renewed commissioning.