Manitowoc STH042 4/16, Technician'S Handbook

Page: 49 / 146

Part Number STH042 4/16 49
CONTROL BOARD TIMERS
• The ice machine is locked into the freeze cycle for 6
minutes before a harvest cycle can be initiated.
• The freeze time lock in feature is bypassed on the
initial cycle (manual start or after a full bin/safety limit
condition).
• If the harvest float switch is in the down position for
10 continuous seconds during the start of a freeze
cycle, a harvest sequence is initiated.
• The maximum freeze time is 45 minutes at which
time the control board automatically initiates a
harvest sequence.
• The maximum harvest time is a total of 7 minutes.
If the bin switch does not activate within 3.5 minutes,
the harvest cycle extends another 3.5 minutes. If 7
minutes is exceeded a Harvest Assist Cycle starts.
• The water fill valve is de-energized 1 minute after the
freeze cycle starts. The control board will energize the
water inlet valve one more times 3 minutes into the
freeze cycle.
Control boards with firmware version 2.58 or larger
• The control board will stop the ice machine for 25
seconds during the freeze cycle and then re-energize.