Borg & Overstrom B4.2 Install & Operation Manual page 6

Check all parts are present.
Exchange the drip tray.
NOTE: A WARNING TONE WILL SOUND WHEN THE WATER RISES (3 BEEPS EVERY
15 SECONDS REPEATED). UPON EMPTYING THE CONTAINER THE WARNING TONE
WILL STOP. CONTINUAL BEEP INDICATES LOW BATTERY POWER.
Unscrew lid.
Connect the drainage tubing
that is pre-fitted down the front
left hand side of the cabinet.
Fit both batteries and refit lid.
Level sensor positioned in
container.