925-0290 Rev A 6
3.3 Grounding
An equipment grounding connection (earth ground) must be supplied to the unit for safety and to insure
proper operation of the unit. A green ground screw is provided in the enclosure for connection of an equip-
ment grounding conductor as shown in the figure above. This unit uses earth ground as a reference for
calibration and detecting a covered or uncovered condition. Therefore, the vessel in which the PROCAP I
is mounted must be made of metal, or a suitable metal ground plate must be installed where the PROCAP
I is mounted.
1NC
1C
1NO
2NC
2NO
2C
N
L
COARSE FINE
INTERNAL
COVERED
LED
EXTERNAL
COVERED LED
Ground wire
DELAY
COVEREDUNCOVERED
FUSE
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