Maxum 4200 SY Sport Yacht, Owner'S Manual Supplement, Page: 63 / 96

Chapter 6: Plumbing
57
Drain Systems
Deck Drains
•
Water on the deck is drained overboard through the deck drains.
•
Keep the deck drains free of debris.
Gray Water Drains
The cockpit sink and head sinks are above the waterline and are gravity drained overboard
Sump Pump Drain Systems
•
The showers drain into the sump
pump boxes.
•
Each sump pump box has a
float switch.
•
When the drain water rises to a preset
level, the autofloat switch turns On the
sump pump, and the drain water is
pumped overboard.
Sump Box Cleaning
Periodically clean each sump box, filter, and pump as follows:
1. Remove the cover screws (A) and the cover (B).
2. Remove any debris from the box and the filter.
3. Clean the sump pump as outlined in the Bilge Pumps section of
this chapter.
Sump System Winterization
Drain the sump pump systems in the winter months when not in use.
1. Disconnect and drain all lines to the unit.
2. Remove the screws from the mounting feet (C).
3. Turn the box upside down to remove the rest of the water.
4. Reinstall the screws in the mounting feet and reconnect the system.
SUMP PUMP DRAIN SYSTEM ROUTING
AFT SHOWER
SUMP PUMP BOX
AFT SHOWER
DRAIN
SUMP PUMP BOX
DRAIN
FORWARD SHOWER
SUMP PUMP BOX
FORWARD SHOWER
DRAIN
SUMP PUMP BOX
DRAIN
A B
C