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Attention! The controller must be repaired only by technicians trained and authorized by Gefran. Any attempt by
unauthorized personnel to repair or change the hardware characteristics of the controller will void the warranty.
8.1.
Replacing the controller
The instrument (display + electronic circuits) can be repla-
ced without having to remove the entire controller from the
panel and disconnect its cables.
First switch off the power supply to the controller and to the
other devices connected to it.
Then release the top and bottom of the faceplate and remo-
ve the instrument (see figure).
Insert the new instrument and switch on the power supply.
Attention! Replace the entire controller if the bla-
de contacts inside the instrument or the protecti-
ve case show traces of burns or are not in perfect
condition.
8.2.
Replacing the gasket
The gasket may lose efficiency over time and due to envi-
ronmental conditions.
To maintain IP65 faceplate protection, replace the gasket
(between faceplate and case and between case and panel)
at regular intervals.
8.3.
Cloning the configuration
The configuration of one controller can be cloned to
another controller by means of a PC or the optional ZAP-
PER accessory.
With a PC (and GF_eXpress software):
1.
With the appropriate cable, connect the controller
(with the configuration to be cloned) to the PC.
2.
Read all of the controller configuration parameters
and save them in a file (recipe).
3.
Disconnect the controller.
4.
Connect the controller to be configured to the PC.
5.
Download the saved configuration to the controller.
6.
Disconnect the configured controller
8.4.
Cleaning
To clean the faceplate and the case, use only a soft cloth
dampened with water or alcohol. DO NOT use hydrocarbon
solvents (trichloroethylene, gasoline, etc.).
Do not use compressed air to remove dust from the electro-
nic cards. If necessary, use a clean brush with soft bristles.
80208G_MHW_650-1250-1350_01-2017_ENG
8.
MAINTENANCE
To replace the gasket between the case and the panel you
have to disassemble the controller from the panel and then
reassemble it; to replace the gasket between the facepla-
te and the case, follow the instructions for replacing the
controller).
With the ZAPPER accessory:
1.
2.
3.
4.
5.
6.
7.
You can also clean the inside of the controller if necessary.
To do this, first switch off the power supply to the controller
and to the other devices connected to it.
Then slide out the controller as explained in paragraph "8.1.
Replacing the controller" to access and clean the inside of
the case (page 165).
2
1
1
Connect the ZAPPER to the controller with the
configuration to be cloned.
Press the read key on the ZAPPER: the green LED
starts flashing. DO NOT disconnect the ZAPPER while
the LED is flashing.
After a short time the green LED lights up steadily.
A rapidly flashing red LED means that the read proce-
dure failed. Disconnect the controller.
Connect the ZAPPER to the controller to be configured.
Press the write key on the ZAPPER: the green LED
starts flashing. DO NOT disconnect the ZAPPER while
the LED is flashing.
After a short time the green LED lights up steadily.
A rapidly flashing red LED means that the write proce-
dure failed.
Disconnect the configured controller.
8. MAINTENANCE
165
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