Waikato Air Injector Circuit Board Suitable for 12V and 24V This circuit board is the key control component for Waikato air injector systems used in dairy vacuum circuits. It manages the timing and actuation of the air injector, helping maintain stable vacuum balance and controlled air entry into the vacuum line — essential for smooth milking performance and system reliability. Electronic control boards like this can fail over time due to vibration, moisture exposure, washdown conditions, or electrical surges. When the board is compromised, vacuum stability can fluctuate, injector response may become inconsistent, and overall milking performance can be affected. Replacing the circuit board with a genuine or compatible control unit restores correct control logic and supports dependable operation. Designed specifically for Waikato air injector models, this circuit board fits accurately and is straightforward to install by electricians or competent farm staff during servicing or repairs. Keeping a spare control board on hand can minimise downtime and support continuous milking schedules on busy farms. Supported by Mill Dairy Service’s practical on-farm engineering knowledge, this Waik
