3
• Please review this manual. It should be read carefully before the icemaker is serviced
or maintenance operations performed. Only qualified service technicians should service
and maintain the icemaker. This manual should be made available to the technician
prior to service or maintenance.
CONTENTS
PAGE
I. SPECIFICATIONS .................................................................................................... 5
1. KM-500MAF (Air-cooled) .................................................................................... 5
2. KM-500MWF (Water-cooled) .............................................................................. 6
3. KM-500MRF (Remote air-cooled) ....................................................................... 7
4. CONDENSER UNIT, URC-6F ............................................................................. 8
II. GENERAL INFORMATION .................................................................................... 10
1. CONSTRUCTION ............................................................................................. 10
[a] KM-500MAF (Air-cooled) ............................................................................ 10
[b] KM-500MWF (Water-cooled) ...................................................................... 11
[c] KM-500MRF (Remote air-cooled) ............................................................... 12
2. CONTROLLER BOARD .................................................................................... 13
[a] SOLID-STATE CONTROL .......................................................................... 13
[b] CONTROLLER BOARD .............................................................................. 13
[c] SEQUENCE ................................................................................................ 17
[d] CONTROLS AND ADJUSTMENTS ............................................................ 20
[e] CHECKING CONTROLLER BOARD .......................................................... 23
III. TECHNICAL INFORMATION ............................................................................... 25
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT ........................................... 25
[a] KM-500MAF (Air-cooled) ............................................................................ 25
[b] KM-500MWF (Water-cooled) ...................................................................... 26
[c] KM-500MRF (Remote air-cooled) ............................................................... 27
2. WIRING DIAGRAMS......................................................................................... 28
[a] KM-500MAF (Air-cooled) and KM-500MWF (Water-cooled) ....................... 28
[b] KM-500MRF (Remote air-cooled) ............................................................... 29
3. TIMING CHART ................................................................................................ 30
4. PERFORMANCE DATA.................................................................................... 32
[a] KM-500MAF (Air-cooled) ............................................................................ 32
[b] KM-500MWF (Water-cooled) ...................................................................... 33
[c] KM-500MRF (Remote air-cooled) ............................................................... 34
IV. SERVICE DIAGNOSIS ........................................................................................ 35
1. NO ICE PRODUCTION..................................................................................... 35
2. EVAPORATOR IS FROZEN UP ....................................................................... 38
3. LOW ICE PRODUCTION .................................................................................. 38
4. ABNORMAL ICE ............................................................................................... 39
5. OTHERS ........................................................................................................... 39
