3
Figure 2. Typical installation diagram
All pipe fittings are ½" NPT (National Pipe Taper)
SYPHON
BREAKER
FLOW
CONTROL
VALVE
WATER
SOLENOID
VALVE
WATER
SUPPLY
ELECTRICAL
SUPPLY
ELECTRICAL
DISCONNECT
SWITCH
CONTROL
CENTER
OPTIONAL
CONNECTION
DISPOSER
PLUMBING CONNECTIONS
The solenoid valve is packed with the control center. The
flow control valve and syphon breaker are supplied with
all complete disposer packages (packaged separately).
The solenoid valve is supplied with a 24 V coil. Make cer-
tain that the valves are plumbed according to the water
flow direction arrows marked on the valves, or the valves
will not function properly.
The flow control valve regulates all water flowing into the
disposer. This conserves water and prevents overload-
ing. Check direction of water flow arrows.
A syphon breaker must be installed above the sink flood
plane per local plumbing codes. Check direction of water
flow arrows.
Plumbing Connections
ELECTRIC SHOCK
• Turn off the electrical supply to the disposer before
attempting any work on it. Use a voltmeter or
circuit tester to ensure that the power is off.
• All installation work must conform to local
plumbing and electrical codes.
• All control centers and disposers must be
carefully and permanently grounded.
• A properly fused disconnect must be installed at
the electrical supply source for the control center.
Electrical Connections
PROPERTY DAMAGE
• Ensure that control center voltage and phase
match the disposer motor and electrical supply.
Check name plates on disposer and control
centers for voltage and phase specifications.
• Refer to the control center wiring diagrams in this
manual for correct connection.
• Use NEMA 4 watertight electrical connectors (not
supplied) when making electrical connections to
the control center.
NOTE: The MSLV control center has a door disconnect
switch, the disconnect switch must be in the off position
before the panel door can be opened. Power is still pres-
ent at the disconnect until power is turned off at the supply
source.
ELECTRICAL CONNECTIONS
The MSLV control center uses low-voltage (24 V) to oper-
ate contactor coils, push buttons and solenoid valves. Red
wires denote the 24 V circuit.
Connect the incoming line power to the electrical door dis-
connect switch and connect the disposer motor to labeled
terminal blocks in the control center. Use the appropriate
schematic wiring diagram, Figures 5, 6, 7 or 8. Wiring
diagram is also located on the inside door of the control
center. Wire the disposer motor for correct voltage using the
connection diagram inside the motor terminal box.
Wire per local electrical code using 7/8" diameter holes in
the bottom of the control center cabinet, and install NEMA 4
watertight electrical connectors (not supplied). All control
centers and disposers must be carefully and permanent-
ly grounded.
After completing the connections, close door and fasten
all locking clamps. Replace disposer motor cover. Turn on
power.
WATER SOLENOID VALVE
Connect water solenoid valve as shown in Figure 3. Con-
nect solenoid valve to the low-voltage solenoid terminals
numbers 4 and 5.
Figure 3. Solenoid valve connections to control panel terminals.
WATER SOLENOID VALVE
24 COIL
4
5
