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Cornelius Ice Makers Training Manual

APPENDIX B — EVOLUTION OF THE CHUNKLET / FLAKER DESIGN

The Chunklet / Flaker Ice Maker line currently being manufactured by Cornelius in its Mason City, Ia.

facility originated in the 1950’s as the Reynolds ice maker. The original unit was designed for use exclu-

sively in the post mix vending machine industry. The ice maker has evolved considerably since without

losing its original design benefits, compact size, and high output.

The Spline Drive

The original ice maker utilized the refrigeration system from a vending machine. Soon self-contained

models were developed with their own refrigeration systems for use in restaurants, convenience stores,

and institutional markets. These early units were available in two sizes, the 2" dia. evaporator, with an

output of 300 to 500 lbs. per day, and a 2 ½” evaporator, with a 300 to 700 lbs. output. They were avail-

able in 3 cabinet types: a counter top model, a bin-top model and a floor model. The bin top and floor

models were available in both flaker and chunklet models.

These early versions of the ice maker, while similar in construction to today's ice maker, were difficult to

clean and service. The ice making unit began with a gearmotor. The bottom seal and bearing assembly

were bolted onto the output of the gearbox. An auger coupling was held in between the seal and gearbox

output. The evaporator was slid onto this assembly and held in place with three lock-tighted bolts. The

auger was inserted onto the evaporator and engaged with the coupling. An extruding head was inserted

into the top of the evaporator and bolted into place. On top of the extruder, a crescent shaped cutter was

used if harder ice was desired.

The Pin Drive

During the 1980's, ice makers were revised with ease of maintenance in mind. The new ice maker used

the same method of making ice, but eliminated the bolt-in extruding head. Instead, the seal assembly

was mounted directly on the transmission assembly and held in place by a drive pin. The drive pin elimi-

nated the need for a separate coupling by directly mating the transmission to the auger. The extruding

head was re-designed so that instead of being bolted into the top of the evaporator, it sat into three anti-

rotation slots. On top of the extruder a white nylon bearing and nut assembly bore the weight of the

downward thrust of the auger. These changes allowed the auger assembly to be easily lifted from the

evaporator barrel without the use of tools.

Current Generation “D” Drive

In 1994, the latest revision of the ice maker was introduced. The D-drive and two-piece thrust-bearing

give the ice maker more ease of maintenance and reliability than ever before. Eliminating the drive pin

and utilizing the “D” shaped output shaft on the gearmotor, makes the entire assembly more reliable. Sur-

face to surface contact between the auger and gearmotor is increased dramatically. A two piece bearing

at the top of the extruding head is much longer lasting.

This generation of ice makers is the first to use environmentally friendly refrigerants.

The D-drive ice maker is available as a counter-top or bin-top model. The counter-top model called the

IMD, (Ice Maker Dispenser) is available in two evaporator sizes and three bin capacities. The 2" evapora-

tor is available with the 15 and 3O lbs. bin, and the 2 ½” evaporator comes in the 30 and 9O lbs. sizes.

The designation IMD600-30 indicates the Ice Maker Dispenser with a 2 ½” evaporator and a 3O lbs. bin.

The bin-top model line is sub-divided into two categories. First, the chunklet model, designated the WCC

(Wilshire Continuous Chunker). The second unit is designated the WCF (Wilshire Continuous Flaker).

Bin-top models are available in three evaporator sizes, 2”, 2 ½” and 3 ½” sizes. The designations for

these models are WCC 500, WCC 700 and WCC 1000.The Flakers are listed as WCF 510, WCF 71O

and WCF 1100. An ice maker with dual 3 ½”evaporators has been developed with the designation of

WCF 2200.

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