GMW 231HC, User Manual

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Section 1
WARNINGS
REFER TO WARNINGS BELOW BEFORE OPERATING THE 231HC AMPLIFIER
2.1 - Personal Safety
Never service alone
. Do not perform service to the 231HC and associated DC Power Supply
unless another person is present who is capable of rendering first aid.
The output from the model 231HC is potentially lethal. It is capable of delivering high voltages
at high current. Do not remove protective covers or leave cable terminations exposed. Do not
operate the amplifier if terminals or cables are damaged.
The 231HC Amplifier incorporates a capacitor bank of 0.2F capacitance to provide high peak
power. This capacitor bank and other internal components will remain charged for several
minutes even after the DC Power Supply is switched off.
Always disconnect the input dc power before servicing and ensure that sufficient time has passed
to completely discharge the capacitor bank before servicing the DC Power Supply, 231HC
Amplifier or its connected load. Always assume the presence of hazardous voltages. Always
connect a short insulated jumper cable across the dc input terminals before removing any
protective covers. Refer to Drawing 13907-0002-1.
2.2 - Current Connections
Special care should be taken to insure that the current terminations are secure and do not work
loose in operation. Local heating at the terminations can cause rapid oxidation leading to a high
contact resistance and high power dissipation at the terminals. If left unchecked this can cause
enough local heating to damage the current connection terminals.
2.3 - Interlocks
The 231HC Amplifier has interlock connections between the DC Power Supply and the
Electromagnet load. The interlocks must be connected for proper system functioning and
protection of the equipment, facility and to protect against personal injury. Attempting to
operate the system with the interlocks defeated is not recommended.