Tormach PCNC 770 - Electrical Safety

Chapter 1
4
UM10350_PCNC770_Manual_0916A
Preface
• Chips and dust from certain materials (e.g., magnesium) can be ammable. Fine dust from
normally non-ammable materials may be ammable or even explosive.
• Chips, dust, and vapors from certain materials can be toxic. Always check the Materials Safety
Data Sheet (MSDS) for each material.
IMPORTANT: It is the responsibility of the employer/operator to provide and ensure point of operaon
safeguarding per the following:
• OSHA 1910.212 – General Requirements for All Machines
• OSHA 1910.212 – Milling Machines, point of operaon safeguarding
• ANSI B11.22-2002 Safety Requirements for Turning Centers and Automac Numerically
Controlled Turning Machines
• ANSI B11.TR3-2000 Risk Assessment and Risk Reducon – A Guideline to Esmate, Evaluate,
and Reduce Risks Associated with Machine Tools
• Safety Requirements for Construcon, Care, and Use of Drilling, Milling and Boring Machines
(ANSI B11.8-1983). Available from American Naonal Standards Instute, 1430 Broadway,
New York, New York 10018
• Concepts and Techniques of Machine Safeguarding (OSHA Publicaon Number 3067).
Available from The Publicaon Oce – OSHA, U.S. Department of Labor, 200 Constuon
Avenue, NW, Washington, DC 20210
Electrical Safety
WARNING! Electrical Shock Hazard: Be sure to power o machine before making any electrical
modicaons. Failure to do so may result in serious injury or death.
Input Power: The PCNC 770 has one 115 V power input which is capable of delivering lethal electrical
shocks. Care should be exercised when working inside the electrical cabinet.
Grounding: The power input must be grounded. Do not assume during installaon that a wall outlet
is properly grounded. Check connuity between the machine frame and true earth ground (metal
water pipe or similar) to ensure a good ground connecon.
Ground Fault Interrupter: A Ground Fault Interrupter or GFI (also known as a Residual Current
Circuit Breaker or RCCB) outlet must not be used to supply power to the 115 VAC power input as it
will interfere with the spindle-drive electronics.
Electrical Cabinet: Never operate the mill with the electrical cabinet open. Never allow the coolant
pump to operate with the electrical cabinet open. Do not allow the coolant system to ow coolant
directly at the electrical cabinet or the operator panel. Neither the electrical cabinet nor the operator
panel controls are hermecally sealed against liquids.