Manitowoc QuietQube Series Technician's Handbook page 116

Diagnosing Harvest Issues
Follow these steps in order and refer to specific procedures
referenced to troubleshoot and diagnose problems.
1. Record the model and serial number of the ice
machine and condenser and verify the head section
and condensing unit match.
2. Verify the ice formation is normal see page 104 and
the bridge thickness is 1/8" at the beginning of the
harvest cycle see "Ice Thickness Check" on page 58.
3. Verify power is present at the harvest valve(s)
throughout the entire harvest cycle.
4. Determine if it is a "melt out" see page 115.
Melted cubes indicate this is not a refrigeration
problem. Inspect the evaporator for defects; grid
separation, plating issues, cracked or loose evaporator
frame or frame gasket defects. If no defects are found,
thoroughly clean the evaporator. Exceptionally dirty
evaporators will require cleaning with a scrub brush.
116 Part Number: 000015431 Rev01 5/19