6.3 Signals to be observed
• Lamp on top of printhead:
o Red light: Safety PLCs are preventing the machine from moving – all high voltage power
is turned off.
▪ The light is red by default when the power is turned on by the circuit breaker.
• In order to enable printing, press the green “start” button on the E-box.
▪ An E-stop is triggered on either one of the columns or on the printhead
• Disable the E-stop by turning it clockwise until it clicks out.
• Press the green “Start” button on the E-box
▪ Another fault is present. See section 7.4
o Green Light: Safety PLCs are satisfied, and printer is ready for operation
o Blinking Orange light: Printer is moving faster than 250mm/s. Safety door is connected
and engaged. Use key switch in door to access print area.
6.4 Accessories
1. M-tec Duo mix 2000 (optional)
a. Available as add-on purchase. Used to continuously supply concrete to printhead hopper
b. See https://m-tec.com/construction-site-equipment/machines/mixing-pumps/duo-mix/
2. Print nozzles
a. Nozzles can be 3D printed with a regular FDM 3D printer. Digital models are supplied at
machine installation time.
3. Ethernet cable – CAT5e 20 meter
4. Material silo (optional)
5. Safety fence with safe interlocking system (optional).
6. Material supply hose (optional).
a. ID of either 25 or 36 mm
7. Pump controller cable (optional)
6.5 Disposal of waste materials
The BOD2 printer is open to all materials with compatible aggregate sizes and consistency. COBOD
International does not develop, produce or supply any concrete or mortar materials. For disposal of waste
materials, please refer to supplier documentation and local law.
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