Safety

Read Before Operating

Read and follow all warnings, cautions, and operating instructions before operating this mill. Failure to do so may result in voided warranty, property damage, serious injury or death.

Symbol	Description	Example
	WARNING! Indicates a hazard which, if not avoided, could result in death or serious injury.	WARNING! Ejection Hazard: Tools and workpieces must be clamped properly. Failure to do so may result in serious injury or death.
	CAUTION! Indicates a hazard which, if not avoided, could result in injury or mill damage.	CAUTION! Sharp Objects: Be sure to wear gloves when uncrating mill. Failure to do so may result in serious injury.
IMPORTANT!	IMPORTANT! Addresses important practices not related to personal injury.	IMPORTANT! Damage to mill may occur if motor weight is supported by motor wires.
NOTE:	NOTE: Provides additional information, clarification, reminders, or helpful hints.	NOTE: For further information on automatic oiler troubleshooting, refer to operator manual.

Safety Overview

Any machine tool is potentially dangerous. The automation inherent in a CNC machine presents added risk not present in a manual mill. Tormach CNC mills can deliver sufficient force to break brittle tools, crush bones, and tear flesh.

This manual provides guidance on safety precautions and techniques, but because the specifics of any one workshop (or other local conditions) can vary greatly, Tormach accepts no responsibility for machine performance or any damage or injury caused by its use. It is your responsibility to ensure you understand the implications of what you are doing and comply with any legislation and codes of practice applicable to your city, state or nation.

Machine Safety

Safe operation of the machine depends on its proper use and the precautions taken by the operator. Read and understand this manual prior to mill use. Only trained personnel — with a clear and thorough understanding of its operation and safety requirements — should operate this mill.

General Safety:

Wear OSHA-approved safety glasses, safety shoes, and ear protection.
Remove loose-fitting clothing, neckties, gloves, and jewelry.
Tie up long hair or secure under a hat.
Never operate a machine after consuming alcohol or taking medication.
Keep work area well lit and deploy additional lighting, if needed.

Operational Safety:

Understand CNC mills are automatically controlled and may start at any time.
Do not leave machine unattended during operation.
Always power off machine when not in use.
Never operate with unbalanced tooling or spindle fixtures.
Remove all tools (wrenches, chuck keys, etc.) from spindle and machine table before starting operations; loose items can become dangerous projectiles.
Use adequate work clamping; loose workpieces can become dangerous projectiles.
Protect your hands. Stop machine spindle and ensure mill motion has stopped before:
- Reaching into any part of the machine motion envelope
- Changing tools, parts or adjusting the workpiece
- Changing belt/pulley position
- Clearing away chips, oil or coolant; always use a chip scraper or brush
- Making an adjustment to part, fixture, coolant nozzle or when taking measurements
- Removing protective shields or safeguards; never reach around a guard
Keep work area clear of clutter as mill motion can occur when keys are accidently pressed or objects fall on keyboard, resulting in unexpected motion.
Position clamping attachments clear of tool path. Be aware of workpiece cutoffs that could be cut free during operations and become dangerous projectiles.
Always use proper feeds/speeds, as well as depth/width of cut to prevent tool breakage.
Check for damaged tools/workpieces and cease operations if detected; replace before restarting operations as these can become dangerous projectiles. Never use longer or larger tools than necessary.
Chips and dust from certain materials (e.g., magnesium) can be flammable. Fine dust from normally non-flammable materials may be flammable or even explosive.
Chips, dust, and vapors from certain materials can be toxic. Always check the Materials Safety Data Sheet (MSDS) for each material
OSHA 1910.212 – General Requirements for All Machines
OSHA 1910.212 – Milling Machines, point of operation safeguarding
ANSI B11.22-2002 Safety Requirements for Turning Centers and Automatic Numerically
Controlled Turning Machines
ANSI B11.TR3-2000 Risk Assessment and Risk Reduction – A Guideline to Estimate, Evaluate,
and Reduce Risks Associated with Machine Tools
Safety Requirements for Construction, Care, and Use of Drilling, Milling and Boring Machines (ANSI B11.8-1983). Available from American National Standards Institute, 1430 Broadway, New York, New York 10018
Concepts and Techniques of Machine Safeguarding (OSHA Publication Number 3067). Available from The Publication Office – OSHA, U.S. Department of Labor, 200 Constitution Avenue, NW, Washington, DC 20210

Electrical Safety

WARNING! Electrical Shock Hazard: Be sure to power off machine before making any electrical modifications. Failure to do so may result in serious injury or death.

Input Power: The PCNC 1100 has two electrical power inputs, primary and secondary. The 230 VAC primary input supplies axis and spindle power, while the 115 VAC secondary input supplies power to the PathPilot^® controller and accessory outlets. The wiring and electrical components associated with either circuit are capable of delivering lethal electrical shocks. Care should be exercised when working inside the electrical cabinet.

Grounding: Both primary and secondary power inputs must be grounded. Do not assume during installation that a wall outlet is properly grounded. Check continuity between the machine frame and true earth ground (metal water pipe or similar) to ensure a good ground connection.

Ground Fault Interrupter: A Ground Fault Interrupter or GFI (also known as a Residual Current Circuit Breaker or RCCB) outlet must be used to supply power to the 115 VAC power input for the secondary input.

Electrical Cabinet: Never operate the machine tool with the electrical cabinet open. Never allow coolant pump to operate with the electrical cabinet open. Do not allow the coolant system to flow coolant directly at the electrical cabinet or the operator panel. Neither the electrical cabinet nor the operator panel controls are hermetically sealed against liquids.

Electrical Service: Certain service and troubleshooting operations require access to the electrical cabinet while power is on. Only qualified electrical technicians should perform such operations.

Retained Electrical Power: Electronic devices within the electrical cabinet may retain dangerous electrical voltage after the power is off.

Looking for more information?

This is a section of the PCNC 1100 operator's manual. To view the whole manual, go to Tormach document UM10349.

If you have additional questions, we can help. Create a support ticket with Tormach Technical Support at tormach.com/how-to-submit-a-support-ticket for guidance on how to proceed.