Temperature Vacuum Switch (TVS)

Apply 54 kPa (16 inches Hg) vacuum to motor side and trap.

a) With the white TVS cooled to 10°C (50°F), the normally open TVS must hold 16.9 kPa (5 inches Hg) for 30 seconds. The white TVS should not hold vacuum above 24.4°C (76°F).

b) With the brown colored TVS cooled to -9.4°C (15°F), the normally open TVS must hold 16.9 kPa (5 in-Hg) for 30 seconds. The brown TVS should not hold vacuum above -1.1°C (30°F).

c) The normally closed, red TVS should not hold vacuum at or below 10°C (50°F), however, it must hold 16.9 kPa (5 in.Hg) vacuum for 30 seconds above 18.3°C (60°F).

d) With the purple TVC cooler to 4.4°C (40°F), the normally open TVS must hold 16.9 kPa (5 in. Hg.) for 30 seconds, the purple TVS should not hold vacuum above 12.8°C (55°F).