

Part #PCT042-1396
OEM Part #004108
OVERHEAT THERMOSTAT
- Rated: Open between 220Ëš F and 350Ëš F; Factory set at 295Ëš F
Includes
- Thermostat
- Two Terminal Screws
Model This Part Fits: AMSCO 900 Series Autoclaves
Notes: SERVICE TIP: Whenever changing heaters, change the Overheat Thermostat at the same time
PCT042-1396
OVERHEAT THERMOSTAT
PROCEDURE FOR SETTING
CAUTION - DANGEROUS IF PRESSURE EXCEEDS 35 PSI
- After installing switch, run a 15 amp AC ammeter in power supply line. As alternate, run a 120-volt voltmeter across the center heating element terminals
- Starting from a cold condition, run a normal autoclaving cycle
- Remove temperature control knob on front of machine and rotate shaft to maximum position (turn clockwise)
- Current should be on when machine is at 270°F (27 PSI). If not, turn adjustment screw in overheat thermostat switch counter-clockwise to restore current. Safety valve should have released if pressure goes to 35 PSI
- At 270°F (27 PSI) turn screw clockwise until current is off (0 reading on meter used in #1 above). Then carefully turn screw counterclockwise until current starts up. Setting is now proper for switch if autoclave was started cold
- The switch is now set and needs no further adjustment. Return to the temperature control shaft (#3 above), turning it counter-clockwise until it is set at 270°F (27 PSI). The knob can now be replaced.