Milnor 5050, Service Manual

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Pellerin Milnor Corporation
Figure 1. Component Locations for 6464_ Models
Left, Front, and Right-side Views (model 6464TG1L shown)
Legend
ST225-1 . . Basket temperature switch (upstream of blower). The switch closes at 225° F (107° C).
ST225-2 . . Outlet temperature switch (downstream). The switch closes at 225°F (107°C).
ST550A . . Inlet temperature switch. This switch closes at 550° F (288° C).
ST550B . .
Secondary inlet temperature switch. This switch closes at 550° F (288° C).
STBB . .
Burner housing temperature switch. This switch closes at 175° F (79° C).
T2.. Inlet temperature thermocouple. The fire safety system does not use this component.
T3.. Outlet temperature thermocouple. This component gives temperature data to the controller.
1... Sprinkler valve assembly
2... Reset handle
3... Operation handle
Figure 2. View of ST550A, ST550B and T2
Figure 3. View of ST225-1
Figure 4. View of ST225-2 and T3
Figure 5. View of STBB
Fire Safety System Operation and Maintenance
13