Maintenance And Cleaning - WIKA PG28 Betriebsanleitung

7. Maintenance and cleaning

7. Maintenance and cleaning
Personnel: Skilled personnel
7.1 Maintenance
The instruments are maintenance-free.
EN
„
The indicator should be checked once or twice every year. For this
„
the instrument must be disconnected from the process to check with
a pressure testing device.
For filled instruments, the level must be checked once or twice every
„
year. The liquid level must not drop below 75 % of the instrument
diameter.
Repairs should only be carried out by the manufacturer or, following
„
prior consultation with the manufacturer, by correspondingly qualified
skilled personnel.
After exceeding the requirements per EN 837-1
„
must be checked for correct functioning and replaced if necessary.
1) The scale range 0 ... 700 bar [0 ... 10,000 psi] has achieved a load cycle stability of 180,000 load cycles, in deviation
from the requirements.
7.2 Cleaning
CAUTION!
Physical injuries and damage to property and the
environment
Improper cleaning may lead to physical injuries and damage
to property and the environment. Residual media in the
dismounted instrument can result in a risk to persons, the
environment and equipment.
Carry out the cleaning process as described below.
20 WIKA operating instructions pressure gauge, model PG28
, the instrument
1)