Manitowoc QM-45 Spécifications télécharger pdf (Page 31)

Section 5 Before Calling for Service

Part Number 000001774 07/08 5-5

Safety Limit #2

Harvest time exceeds 3.5 minutes for 3 consecutive harvest cycles.

Because there are many possible external problems,do not limit your diagnosis to only the items listed in

these charts.

Possible Cause Check/Correct

Improper installation See “Installation Instructions” Section 2 of this manual

Water system Water area (evaporator) dirty

Water freezing behind evaporator

Low water pressure (20 psi minimum.)

Loss of water from sump area

Clogged water distribution tube

Dirty/defective water float valve

Defective water pump

Electrical system Ice thickness probe out of adjustment

Ice thickness probe dirty

Bin switch defective

Premature harvest

Refrigeration system Non-Manitowoc components

Improper refrigerant charge

Defective hot gas valve

TXV flooding (check insulation and bulb mounting)

Defective fan cycling control

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Manitowoc QM-45 Spécifications Page 31