Safety Precautions - Service And Operation; Electrical Conditions; Proper Equipment Grounding; Electrical Interface And Control - Instrutech CVM211 User Manual

Instruction Manual

2.2 Safety Precautions - Service and operation

Ensure that the vacuum port on which the CVM211 vacuum gauge is mounted is electrically grounded.
Use an appropriate power source of 12 to 28 Vdc, 2 W.
Turn off power to the unit before attempting to service the module.
Turn off power to the unit if a cable or plug is damaged or the product is not operating normally according to
this User Manual. Contact qualified InstruTech service personnel for any service or troubleshooting condition
that may not be covered by this User Manual.
It is important that the product be periodically inspected for sound electrical connections and equipment
grounding. Do not use if the equipment grounding or electrical insulation has been compromised.
Do not use if the unit has been dropped or the enclosure has been damaged. Contact InstruTech for return
authorization and instructions for returning the product to InstruTech for evaluation.

2.3 Electrical Conditions

WARNING! When high voltage is present in any vacuum system, a life threatening electrical shock hazard
may exist unless all exposed electrical conductors are maintained at earth ground potential. This applies to all
products that come in contact with the gas contained in vacuum chambers. An electrical discharge within a
gaseous environment may couple dangerous high voltage directly to any ungrounded conductor of electricity. A
person could be seriously injured or killed by coming in contact with an exposed, ungrounded electrical
conductor at high voltage potential. This condition applies to all products that may come in contact with the gas
inside the vacuum chamber (vacuum/pressure containment vessel).

2.3.1 Proper Equipment Grounding

WARNING! Hazardous voltages that could seriously injure or cause death are present in many vacuum
processes. Verify that the vacuum port on which the CVM211 vacuum gauge module is mounted is electrically
grounded. Consult a qualified Electrician if you are in doubt about your equipment grounding. Proper
grounding of your equipment is essential for safety as well as intended operation of the equipment. The
CVM211 module vacuum gauge must be connected directly to a good quality earth ground. Use a ground lug on
the CVM211 gauge vacuum connection / flange if necessary.
WARNING! In order to protect personnel from electric shock and bodily harm, shield all conductors
which are subject to potential high voltage electrical discharges in or around the vacuum system.

2.3.2 Electrical Interface and Control

It is the user's responsibility to ensure that the electrical signals from this product and any connections made to
external devices, for example, relays and solenoids, are used in a safe manner. Always double check the system
InstruTech
CVM211 Stinger
Page 7