Mobile Automation delivered a machinery compliance program for a Victorian window and door manufacturer, bringing more than 30 production presses and machines into line with AS/NZS 3000.
Assessing each machine and redrawing the schematics
Work ran machine by machine to a supplied report.
- Each unit assessed and the schematic changes hand-drawn, settling wiring, protection and materials before anything was pulled apart
- The modification proven on the first presses, then repeated to the same documented arrangement
- Drawings adjusted as work went, so each machine is recorded as built
Converting the presses to 415V and rewinding the motors
The legacy presses were taken off their original 200V three-phase supply.
- Correct supply leads and neutrals installed, redundant iron-core transformers removed and voltage labelling changed
- Motors removed for rewinding, then returned to their hydraulic packs with pumps refitted and hoses reconnected
- Rotation checked press by press
- Conveyor given a single-phase supply lead with a dedicated circuit breaker, and its servo drive reconfigured for 240V single-phase
Earthing, motor protection and sealed enclosures
Every cabinet was brought to the same earthing and protection standard.
- Earth block replaced with an earth stud, and door, cabinet, machine and motor bonded with straps
- Earth continuity tested back to the main earth
- Siemens contactors and overloads replaced with Schneider equivalents
- Overloads sized against measured motor current rather than assumed
- Cabinet openings closed with fabricated, paint-matched plates and conduit entries sealed with adaptable boxes
- Covers fitted over machine cabling to inhibit dust, debris and rodent ingress
New overhead busbar and switchboard chassis
The modified fleet needed distribution to match.
- Old busbar isolated and removed, its unistrut lifted to five metres with a parallel run added
- Two new cables pulled in, with single- and three-phase take-off boxes hung on jack chain
- Hybrid chassis fitted to the main switchboard, existing circuits re-terminated behind residual current protection
- Switchboard schedule and label updated
The results
- More than 30 presses and machines brought into line with AS/NZS 3000
- Power proved at the busbar and at every outlet, with outlets tested and tagged
- Damaged outlets replaced
- Report issued recommending the oldest presses be rewired in flexible conduit with modern stop/start stations