Varian VHS-250, Инструкция по эксплуатации

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VHS-4, VHS-6 and VHS-250 Diffusion Pumps
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High Temperatures
Hot Surfaces
Boiler temperatures reach 530 °F (275 °C) which can cause serious burns. Always ensure
that surfaces have cooled to near room temperature before touching them.
Hot Cooling Water and Steam
The water used to cool the pump can reach scalding temperatures. Touching or rupturing
the cooling surface can cause serious burns. Water left inside Quick Cool Coils from
previous use turns to steam when the pump is reheated. This steam must be allowed to
escape without coming into contact with personnel. Whenever possible, design the water
system with interlock valves so that power cannot be applied to the pump unless water is
flowing in the main cooling coils (not the Quick Cool Coils).
High Voltages
Diffusion pump heaters operate at voltages high enough to kill. Design systems to prevent
personnel contact with high voltages. Securely attach prominent hazard warnings. Always
break the primary circuit to the power supply when direct access to the heater or wiring is
required.