Maintenance And Cleaning - WIKA TR Serie Manual De Instrucciones

6. Commissioning, operation / 7. Maintenance and cleaning
WIKA order no. Designation
11349981 per DIN 7603 Form C 14 x 18 x 2 -CuFA
11349990 per DIN 7603 Form C 18 x 22 x 2 -CuFA
11350008 per DIN 7603 Form C 21 x 26 x 2 -CuFA
11350016 per DIN 7603 Form C 27 x 32 x 2.5 -CuFA
11367416 per DIN 7603 Form C20 x 24 x 2 -CuFA
1248278 per DIN 7603 D21.2 x D25.9 x 1.5 -Al
3153134 per DIN 7603 Form C D14.2 x D17.9 x 2 -StFA
3361485 per DIN 7603 Form C D33.3 x D38.9 x 2.5 -StFA
Legend:
CuFA = Copper, max. 45 HB
with a filling made of asbestos-free sealing material
Al = Aluminium Al99
b
F11, 32 to 45 HB
StFA = Soft iron, 80 to 95 HB
with a filling made of asbestos-free sealing material
6.4 Tapered threads (NPT)
Connections with tapered threads (NPT) are self-sealing and normally must not be sealed. It
should be checked whether it may be necessary to seal them additionally with PTFE tape or
hemp. The threads must be lubricated with a suitable lubricant before fitting.
Tighten the threads by hand when carrying out the final assembly on the plant. This will
correspond to the delivery status of the premounted components. The final tightening and sealing
must be made with a spanner (1.5 to 3 rotations).

7. Maintenance and cleaning

7.1 Maintenance
These thermometers are maintenance-free.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
CAUTION!
Before cleaning, correctly disconnect the instrument from the pressure supply,
■
switch it off and disconnect it from the mains.
Clean the instrument with a moist cloth.
■
Electrical connections must not come into contact with moisture.
■
Wash or clean the dismounted instrument before returning it, in order to protect
■
personnel and the environment from exposure to residual media.
Residual media in dismounted instruments can result in a risk to personnel, the
■
environment and equipment. Take sufficient precautionary measures.
For information on returning the instrument see chapter 9.2 "Return".
WIKA operating instructions resistance thermometers, thermocouples
a
a
Suitable for threads
G ¼, M14 x 1,5
M18 x 1,5, G ⅜
G ½, M20 x 1,5
G ¾, M27 x 2
M20 x 1,5
G ½, M20 x 1,5
G ¼, M14 x 1,5
G 1
GB
17