Recently the gear pump that circulates coolant through the two electric motors failed. Luckly it was discovered before any damage was done. It was decided to upgrade both gear pumps to something more reliable and with higher flow rate. The RS M400S pump was selected. I am not sure if they are rebranded or made under licence but the design of these pumps is by a company called TCS Micropumps out of the UK. They have the following specs:
- Centrifugal pump design
- Brushless drive motor and integral controller
- CNC aluminium alloy construction
- Free flow 2600ml per minute (water at 12V)
It is essential that these new pumps are primed for them to work so clear vinyl tube was installed on the suction and discharge as a visual aid for ensuring correct pump prime.
Final step of the upgrade was to install fans for air cooling of the electric motor rotors (the electric motor stators are water cooled). Two 80mm 12V fans were installed to circulate air past the rotors.
