Safety Precautions - Service And Operation - Instrutech Hornet CCM502 User Manual

Instruction Manual CCM502 Hornet
Due to the possibility of corrosion when used in certain environmental conditions, it is possible that the
product's safety could be compromised over time. 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.

2.2 Safety Precautions - Service and operation

Ensure that the vacuum port on which the CCM502 is mounted is electrically grounded.
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Do not turn on the anode voltage and try to activate the sensor when pressure exceeds 7.60 x 10 Torr.
WARNING! The power supply used in the Cold Cathode Gauge Module (CCM502) is subject to high
voltages which could cause severe injury or death. In order to prevent electric shock and bodily harm, the user
should wait 1 minute after power is removed before touching the CCM502 power supply components.
WARNING! When the anode voltage is turned on and the sensor activated, 3,300 Vdc to 4,500 Vdc is
present at the internal power supply and other components. DO NOT operate the CCM502 with the CCM502
enclosure removed. Contact with exposed electrical circuits in the CCM502 could result in death or serious
injury.
Use an appropriate power source of 14.5 to 30 Vdc, 2 W minimum.
Turn off power to the unit before attempting to service the module.
Turn off power to the unit before detaching the electronics from the sensor for sensor replacement, sensor
cleaning or bake-out purposes.
Turn off power to the unit if a cable or plug is damaged or the product is not operating normally according to
this instruction manual. Contact qualified InstruTech service personnel for any service or troubleshooting
condition that may not be covered by this instruction manual.
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.
The most common cause of all vacuum gauge failures is contamination of the sensor. Noisy, abnormally low, or
erratic readings and total gauge failure are possible indications of gauge contamination.
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