Hoshizaki F-300BAF - Manual (Page 3)

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Please review this manual. It should be read carefully before the unit is serviced or
maintenance operations are performed. Only qualified service technicians should service
and maintain the unit. This manual should be made available to the technician prior to
service or maintenance.
CONTENTS
I. Specifications ...................................................................................................................... 5
A. Icemaker ....................................................................................................................... 5
II. General Information ........................................................................................................... 6
A. Construction .................................................................................................................. 6
B. Ice Making Unit ............................................................................................................. 7
C. Control Box Layout ........................................................................................................ 8
a) Auxiliary Code K-1 and Earlier ............................................................................. 8
b) Auxiliary Code K-2 and L-0 .................................................................................. 8
c) Auxiliary Code L-1 and M-0 .................................................................................. 9
d) Auxiliary Code M-1 and Later ............................................................................... 9
D. Timer Board ................................................................................................................. 10
1. Solid-State Timer Board Control ............................................................................ 10
E. Sequence of Operation ............................................................................................... 11
1. Startup ................................................................................................................... 11
2. Fill Cycle ................................................................................................................ 11
3. Ice Purge Cycle (60 seconds) ............................................................................... 11
4. Freeze Cycle (Ice Making Process) ....................................................................... 11
5. Shutdown: ............................................................................................................. 11
F. Ice Production Check ................................................................................................... 11
III. Technical Information ...................................................................................................... 13
A. Water Circuit and Refrigeration Circuit ........................................................................ 13
B. Wiring Diagram ............................................................................................................ 14
1. Auxiliary Code K-1 and Earlier .............................................................................. 14
2. Auxiliary Code K-2 and L-0 .................................................................................... 15
3. Auxiliary Code L-1 and M-0 ................................................................................... 16
4. Auxiliary Code M-1 and Later ................................................................................ 17
C. Sequence of Electrical Circuit ..................................................................................... 18
1. Fill Cycle ............................................................................................................... 18
2. Ice Purge Cycle .................................................................................................... 19
3. Freeze Cycle ......................................................................................................... 20
4. Shutdown .............................................................................................................. 21
5. Cleaning - Flush Switch ........................................................................................ 22
6. Low Water Safety ................................................................................................... 23
7. Spout Safety Switch .............................................................................................. 24
8. High Pressure Switch ............................................................................................ 25
D. Performance Data ....................................................................................................... 26
IV. Service Diagnosis ........................................................................................................... 27
A. Diagnostic Procedure .................................................................................................. 27
B. Diagnostic Charts ........................................................................................................ 29
1. No Ice Production .................................................................................................. 29
2. Low Ice Production ................................................................................................ 31
3. Other ...................................................................................................................... 32