MICON 500C Electronic Sequencing
2
234AY00.INS R06
Computer Installation Guide
2.0 PRE-INSTALLATION CHECK
The MICON 500C is an electronic pumphead designed for use with compressed natural gas
(CNG) dispensers.
After carefully unpacking the MICON 500C, inspect for shipping damage. Refer to the options label(s)
on the MICON 500C shipping box(es) to ensure the MICON 500C is properly configured for the
intended application. A preliminary electrical check should be performed as follows:
1. Observe position of the pump handle. The MICON 500C is normally shipped with the
actuator shaft in the OFF position: flat (beveled) surface on the end of the shaft facing
DOWN. Current drain will be negligible, however, if unit shipped with battery ON.
2. Battery is ON whenever flat (beveled) side of shaft is facing any direction except DOWN.
Battery should be ON with flat (beveled) side of shaft facing UP when handle OFF.
Prepare handle switch for a preliminary check by positioning shaft and coupler assembly in
handle OFF
position:
a) Pull cotter pin.
b) Rotate actuator shaft until the flat (beveled) side faces UP.
c) Rotate the coupler assembly until it snaps against the opposite stop pin.
d) Re-install cotter pin in a vertical position.
The handle OFF coupler assembly will appear as in Figure 2 below. Coupler assembly may
rest against stop pin #1 or stop pin #2, as long as cotter pin is vertical and flat (beveled) side
of shaft faces UP when handle OFF.
battery
OFF
when flat (beveled) side of shaft facing
DOWN
FIGURE 1 – BATTERY OFF ACTUATOR SHAFT POSITION
FIGURE 2 – COUPLER ASSEMBLY
HANDLE OFF
POSITION
COUPLER ASSEMBLY
STOP PIN #1
STOP PIN #2
COTTER PIN
ACTUATOR SHAFT
FLAT (BEVELED)
SIDE UP IS
HANDLE
OFF (BATTERY ON)
POSITION
