IceMach

Manitowac Commercial Ice Machine Test - Sep 2004

An Evaluation of PermaFrost on the performance of Manitowac Commercial Ice Machine
Prepared by Marilyn Sanders, The Toxicology Group, LLC - September 2004

NOTE: Tables and graphs referred to in this summary are available in this PDF file

OBJECTIVE
The objectives of the study were to verify the benefits afforded users of the PermaFrost product in an ice machine application,
in terms of reduction in energy consumption and the reduction of the bin fill time. These benefits, in this application, can be
translated into direct cost savings in the production of ice in the hospitality industry.

TEST PROCEDURES

The ice machince waas allowed to stabilize for a minimum of 6 cycles to establish a baseline of production time and
energy consumption levels.
1 oz of PermaFrost was added directly introduced into refrigerant lines of the ice machine
The water feed for the ice machine was standard tap water. The unit was operated under standard room temperature and
humidity conditions (73° and -50% humidity) during the entire testing period.
The energy consumption and bin fill times and any additional observations were measured and recorded before and after
the addition of PermaFrost.
Testing continued for a maximum of 24 hours after the addition of PermaFrost to the ice machine.

RESULTS
ice actuates abaffle connected to a switch that signals the compressor to resume the cooling cycle. For this test the ice ice
actuates abaffle connected to a switch that signals the compressor to resume the cooling cycle. For this test the ice production
time was measured and it was triggered off this switch. The energy consumption was monitored on the incoming power supply to
the entire unit. Both prior to and after the introduction of PermaFrost the ice bin was completely empty so taht the cycle times
were run under the same conditions.
the cycle times were run under the same conditions.

The ice cycle time decreased from 20 minutes to 13 minutes, with a portion (approximately 2 minutes) of this being attributed to
a cooler bin due to ice presence. A 25% reduction in ice production time was attributed directly to the additive itself. The energy
consumption decreased by approximately 6% after the addition of PermaFrost.

Table 2 - Manitowoc GR0150A
                 Average Interval                                          Rate of Energy
               between Ice cycles                                     Consumption (Watts)
                      (minutes)

Pre-addition of PermaFrost 20 491
Post-addition of PermaFrost 15 458

CONCLUSION/SUMMARY
Over the 24-hour testing period the results indicated a decrease in ice production cycle time with a corresponding decrease in
energy consumption when PermaFrost was added to the Manitowoc GR0150A (cuber type ice machine).

NOTE: The above is a summary of a 8-page report available at Manitowac Commercial Ice Machine: September 2004.
Tables and appendices referred to in this summary are available in this PDF file