USC U-Batch Operator's Manual page 57

1. Check gauge on hydraulic fluid filter. If operational
pressure in the filter is registering in the red zone on
the gauge, replace filter (right).
2. Check fluid level window on the front of the fluid reservoir (left).
It should show fluid half way in the window cold. If it does not,
add fluid.
U-BATCH™ TREATER
HYDRAULIC SYSTEM
Page 57