Manitowoc Indigo Series Technician's Handbook page 134

Weighing the ice is the only 100% accurate check.
However, if the ice pattern is normal and the 
1/8 in. thickness is maintained, the ice slab weights
listed with the 24-Hour Ice Production Charts may be
used.
4. Compare the results of step 3 with step 2. Ice
production checks that are within 10% of the chart
are considered normal. If they match closely,
determine if:
• Another ice machine is required.
• More storage capacity is required.
• Relocating the existing equipment to lower the
load conditions is required.
Contact the local Manitowoc Distributor for information
on available options and accessories.
134 Part Number STH025 8/12