Farmer Chamber
Ionization Chamber
Type 30010, 30011, 30012, 30013
Service Manual - Preventive Maintenance
D596.131.00/05 en
39
7 Preventive Maintenance
Below, you will find a list of the maintenance mea-
sures and inspections necessary for the product.
Check before each use
•
Before each use, visually inspect the product
and cables for signs of mechanical damage.
•
Conduct a functional control. For this, you can
use a radioactive check device of PTW (refer
to section
5 "Accessories and Spare Parts"
For further information on the functional control
please refer to the user manual of the radioac-
tive check device.
•
If damage or malfunctions are identified, the
product must be repaired before it is used
again.
•
Check the leakage current after having con-
nected the detector.
The detectors are designed for operation in a
limited temperature and humidity range (refer
to section
). If a
detector has been subjected to higher humid-
ity this can result in increased leakage current.
Such a detector can normally be restored to
normal functionality by heating to 40 °C for at
least 8 hours at low humidity.
Repair
Repairs may only be carried out by PTW-Freiburg
or by persons/companies authorized by PTW-
Freiburg.
Safety Inspections
Only regularly inspected products are fail-safe. To
preserve the functional security and operational
safety, a safety inspection is to be executed at
regular intervals according to the national regula-
tions.
These inspections must only be performed by
independent persons with adequate training and
experience.
It is recommended to execute the safety inspec-
tions every 2 years.
Technical Inspection of the Measuring
System
The product must be inspected at regular inter-
vals according to the national regulations. It is rec-
ommended to perform technical inspections of the
measuring system every 2 years at PTW-Freiburg
or a qualified calibration laboratory.
Inspections must also be performed after repairs
or after each influence that may have changed the
behavior of the product.
