Figure 11 Schematic for purge gas and switches - EDS pump with water cooling
PG-1
Pressure gauge purge gas
PR-1
Pressure regulator purge gas
BoV-1
Blow off valve
TS-1
Pump body thermal snap switch, warning
TS-2
Pump body thermal snap switch, trip
TS-4
Motor thermistor
Flow restrictor
Non-return valve
7.6 Electrical connections
DANGER: ELECTRIC SHOCK
Electrical shock caused by direct or indirect contact with live parts. Electrical shock due to
faulty electrical connection and possible residual voltage up to 5 minutes after
disconnection from the mains. The electrical connection may only be carried out by a
trained person. Observe the national regulations in the user country, e.g. for Europe EN
50110 - 1. Prior to servicing, disconnect the vacuum pump from the power supply.
Electrical shock due to interruption of the protective conductor system. In the event of a
fault, life-threatening voltages may be present on electrically conductive components.
Before commissioning, check the resistance of the earthing cable and the suitability of
the assigned overcurrent protection device.
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A41802880_C - Installation
