ABB WICB Benutzerhandbuch
62 OI/266/WIHART-EN | 2600T Series Pressure transmitters
10 Maintenance
— Respect the below table indications for reinstalling the process flanges.
Transmitter model and range
Procedure
266DSH / PSH / VSH
Viton Gaskets All bolting
Use a torque wrench to tighten the bolts to a torque of 25 Nm.
PTFE Gaskets
Carbon Steel NACE
and Stainless Steel
and Stainless Steel
Use a torque wrench to tighten the process flange nuts to a torque of 40 Nm, let the flange
stabilize for an hour, unscrew the nuts and tighten again to 25 Nm.
stabilize for an hour, unscrew the nuts and tighten again to 25 Nm.
Stainless Steel
NACE
NACE
Use a torque wrench to tighten the process flange nuts to a torque of 25 Nm, let the flange
stabilize for an hour and perform the final tightening to 25 Nm.
stabilize for an hour and perform the final tightening to 25 Nm.
266DSH.x.H
(High static option)
(High static option)
Viton Gaskets All bolting
Use a torque wrench to tighten the bolts to a torque of 31 Nm.
PTFE Gaskets All bolting
Use a torque wrench to tighten the process flange nuts to a torque of 40 Nm, let the flange
stabilize for an hour, unscrew the nuts and tighten again to 31 Nm.
stabilize for an hour, unscrew the nuts and tighten again to 31 Nm.
266DSH range A
(1KPa)
(1KPa)
All gaskets
All bolting
Use a torque wrench to tighten the process flange screws/nuts to a torque of 14 Nm. Please be
aware that in case of bottom work disassembly and reassembly the original performances can not
be guarantee anymore.
aware that in case of bottom work disassembly and reassembly the original performances can not
be guarantee anymore.
266DSH with Kynar
inserts
inserts
All gaskets
All bolting
Use a torque wrench to tighten the process flange screws/nuts to a torque of 15 Nm
10.4 Pressure transducer replacement
If the pressure transducer needs to be replaced proceed as
follows:
follows:
1. Insulate the transmitter from the process by acting on the
manifolds or on the insulation valves.
2. Open the vent valves to allow sensor depressurization.
3. Remove the battery.
4. Disconnect the transmitter from the bracket unscrewing the
fixing bolts.
5. Open the communication board compartment cover.
6. The communication board is connected to the sensor via a
flat cable and a connector. Remove the communication
board and gently disconnect the connector.
7. Release the tang screw until nd rotate the housing until its
complete removal.
8. Unscrew the fixing bolts from the transducer and remove
the process flanges.
9. The orings placed between the diaphragm and the flange
(Viton or PTFE) must be replaced after every disassembly.
10. Reassemble the flanges following the steps above in
reverse order.
11. The 266 can reconfigure itself with the previous configured
parameters thanks to the auto-configuration functionality.
12. Before powering on the transmitter raise dip-switches 1 and
2 in up position. Install the battery, wait ten seconds and
lower dip-switched 1 and 2 .
13. After installing the transmitter on the bracket and
connecting it to the manifold, performe a PV zero bias.
10.5 Electronic replacement
If the electronic module needs to be replaced proceed as follows:
1. Insulate the transmitter from the process by acting on the
manifolds or on the insulation valves.
2. Open the vent valves to allow sensor depressurization.
3. Remove the battery.
4. Open the communication board compartment cover and
remove the LCD display (if installed).
5. Remove the communication board and gently disconnect
the connector.
6. Connect the sensor flat cable to the new electronic module
with dip switch 1 in up position.
7. Connect the transmitter to power supply, wait ten seconds
and lower dip-switch 1 to 0 position. 266 can reconfigure
itself with the previous configured parameters thanks to the
auto-configuration functionality.
10.6 Battery replacement
1. Remove the housing cover of the “field terminals” side.
See the indication engraved on one side of the housing.
See the indication engraved on one side of the housing.
2. Remove the battery and pulling it completely outside from
its slot.
its slot.
3. Replace the battery paying attention to the polarity and
assuring that the cell makes contact with the electronic
module.
assuring that the cell makes contact with the electronic
module.
Note. 266 WiPressure battery is manufactured by TADIRAN
Batteries GmbH (manufacturer code SL 2780)
Batteries GmbH (manufacturer code SL 2780)
4.
Before installing the huosing cover, check whether the
display is working or not. If yes, put back the housing
cover, turn it to seat O-ring into the housing and then
continue to hand tighten until the cover contacts the
cover, turn it to seat O-ring into the housing and then
continue to hand tighten until the cover contacts the
housing metal-to-metal. If display is not working, please
refer to the troubleshooting section.
refer to the troubleshooting section.