ICE PRODUCTION CHECK

The amount of ice a machine produces directly relates to the operating water and air temperatures. This means an ice machine with a 70°F (21.2°C) ambient temperature and 50°F (10.0°C) water produces more ice than the same ice machine with 90°F (32.2°C) ambient and 70°F (21.2°C) water.

1. Determine the ice machine operating conditions:

Air temp entering condenser:____°

Air temp around ice machine:____°

Water temp entering sump trough:____°

2. Refer to the appropriate 24-Hour Ice Production Chart. Use the operating conditions determined in Step 1 to find published 24 hr. ice production:____

Times are in minutes.

Example: 1 min., 15 sec. converts to 1.25 min.

(15 seconds 60 seconds = .25 minutes)

Weights are in pounds.

Example: 2 lb., 6 oz. converts to 2.375 lb. (6 oz. 16 oz. = .375 lb.)

3. Perform an ice production check using the formula below.

1. _______

 

+

_______

=

_______

Freeze Time

 

 

Harvest Time

Total Cycle Time

2. 1440

 

 

_______

=

_______

Mins

 

 

 

Total Cycle Time

Cycles Per Day

in 24 hrs

 

3. _______

 

x

_______

=

_______

Weight of One

 

Cycles Per Day

Actual 24 Hr

Harvest

 

 

 

 

Production

 

 

 

 

 

 

 

 

4. Compare the results of Step 3 with Step 2. Ice production is normal when these numbers match closely. If they match closely, determine if:

Another larger ice machine is required. Relocating the existing equipment to lower the load conditions is required.

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Manitowoc Ice STH003 manual Freeze Time Harvest Time Total Cycle Time