10 • SCREENGUARD AUTOMATIC SCREEN FILTERS OPERATION INSTALLATION AND MAINTENANCE GUIDE
CONTROL CARD REMOVAL & REPLACEMENT (FIGURE 5)
1. Disconnect the controller from power (AC) or remove batteries (DC).
2. Remove upper and lower cover. If there are any outputs card connected to the controller disconnect them.
3. Unscrew 5 screws (Red Circles). Disconnect power wires (Both AC & DC model - Blue Square).
Disconnect DP sensor, Pressure sensor and external DP (If exists - Yellow Square).
4. Turn on back and separate the back cover:
5. For DC model only - unscrew and remove step-up card.
6. Unscrew the main card - 4 screws (Red circles). Remove the card.
7. Place the new card and go backwards through the same steps as described above:
• Fasten the 4 screws
• Place the Step-up cards and fasten the screw (DC MODEL ONLY)
• Join the two plastic parts (Front and back) and turn to front
• Connect DP sensor, Pressure sensor and external DP (If exists - Yellow square)
• Connect power cable (Blue Square)
• Fasten the 5 screws (Red Circles)
• Reconnect the output cards to the controller. Reconnect solenoids (If disconnected before)
• Return the upper and lower cover
• Connect to power
FIGURE 5
2. 3. 4.
5. 6.
MAINTENANCE
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