Komatsu PC220LC -8 Operation & Maintenance Manual page 70

OPERATION
DETAILED CONTROLS AND GAUGES
Water Separator Monitor
This monitor (6) warns the operator when water has accumulated
inside the water separator.
For details of the method of draining the water from the water
separator, see "Check for Water and Sediment in Water Separator,
Drain Water (PAGE 3-114)".
REMARK
The water separator forms one unit with the fuel pre-filter. It is at the
bottom of the fuel pre-filter and can be removed.
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