WIKA TXS Series, Instruction Manual

Page: 6 / 7

INSTRUCTION MANUAL
NI-492WE
Rev.4 05/18
6 di 7
15 - TROUBLE SHOOTING
IMPORTANT NOTE: operations involving replacement of essential components must be carried out at our workshop, especially
for instruments with flameproof certificate; this is to guarantee the user the total and correct restoration of the product original
characteristics.
MALFUNCTION PROBABLE CAUSE REMEDY
Set point shift
 Deposits on thermowell or bulb
 Filling fluid leakage
 Check and clean surfaces
 Replace the instrument
Slow response  Deposits on thermowell or bulb  Check and clean surfaces
No actuation
 Loosened electrical joints
 Interrupted or short-circuited electrical line
 Microswitch contacts damaged
 Filling fluid leakage
 Check all electrical joints
 Check the conditions of the electrical line
 Replace the instrument
 Replace the instrument
Undue actuation
 Accidental shocks
 Interrupted or short-circuited electrical line
 Modify the mounting
 Check the conditions of the electrical line
Fig. 9 – Bracket for wall mounting Fig. 10 - Bracket for 2 pipe”
Fig. 11 - Surface or 2” pipe mounting Fig. 12 - Surface mounting with Junction Box
1) Temperature switch 5) Branch Connection Fittings 9) Fitting 13) Conduit Seal
2) Capillary 6) Process line 10) Swivel adapter or cable gland 14) Junction box
3) Thermowell 7) Mounting bracket 11) Junction Box (see fig 12)
4) Bulb 8) 2” pipe / Surface 12) Stem (see fig 12)