YSI 58 - Manual (Page 26)

Symptom Possible Cause Action Ref
Check power supply
Manually turn the stir paddle to
help start the motor 3.1.2
Motor not working on the
5905
Replace motor 8
Check if stir paddle is pushed all
the way in 3.1.2
Replace motor 8
Loud motor on the 5905
Bent stir paddle Replace stir paddle 8
Membrane cap is tight on the
5905 Use pliers to loosen the cap (turn
counter clockwise while facing
sensor tip) 3.2
YSI Incorporated YSI 58 DO Meter 22