4. OPERATION AND MAINTENANCE
©2014 Kraus Global Ltd.
Retail CNG Dispenser Manual
33
4.2.2 Connecting the Manager Keypad
The new MICON
®
features an intuitive menu system for applying
configuration settings. This menu is accessed by connecting the
MICON
®
managers keypad to the primary 3-line display located on
the back of the door. The process to connect the manager keypad is
as follows:
1.
Disconnect power from the dispenser at the breaker /
distribution panel.
2.
Shut off gas to the dispenser and ensure that the area is free of
hazardous gas / vapour.
2. Identify the side 1 display. The display can be identified by
observing the address set by the configuration switches
SW200
on the rear of the display. Display 1 should have switches 5, 6,
and 7 in the
ON
position and switch 8 in the
OFF
position.
3. Connect the manager keypad to the display on the
KEYPAD 2
terminals. This connection is highlighted below in
Figure 3.5
.
4. Feed the keypad cable through the top of the dispenser door.
Close the door over the cable. The door should seal around the
cable.
5. Restore power to the dispenser. The purge system timer will
restore power to the MICON
®
after the internal pressure is
adequate and enough time has elapsed for several air turns to
have occurred. If power does not restore, check that there is not
excessive air leaking around the manager keypad cable.
After shutting down the dispenser, ensure that the area
is known to be safe and free of hazardous gasses before
opening the dispenser. If the environment cannot be
reliably verified as being safe, then allow at least 5
minutes before opening the dispenser as the dispenser
may contain hot parts capable of causing ignition.
The keypad connector is keyed and will only connect to
the display in one orientation.
The keypad connection is designed to be intrinsically
safe. This allows for the safe operation of the keypad on
the outside of the dispenser.
CAUTION
ATTENTION
ATTENTION