Hoshizaki M029-897 B. Sequence of Operation, Startup Cycle, Harvest Cycle, Freeze Cycle

Models: M029-897

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B. Sequence of Operation

1. Startup Cycle

When power supply is turned on, "on" appears on CB display and HGV energizes. 30 sec. later, harvest cycle starts.

If the "RESET" button is pressed during 30-sec. startup cycle time, startup cycle ends immediately and harvest cycle starts.

2.Harvest Cycle

HGV continues. Comp and AMD energize. WV energizes as listed in table below.

 

CB

Initial Harvest

Initial Harvest after Bin Control

Normal Harvest

Note

after Power On

Initiated Restart

Setting

 

 

 

All WT

WT>48°F (9°C)

WT≤48°F (9°C)

WT>48°F (9°C)

WT≤48°F (9°C)

 

 

WV Delay

NA

20 sec.

0 sec.

0 sec.

20 sec.

20 sec.

WV Time after

10, 11

95 sec.

10 sec.

95 sec.

30 sec.

95 sec.

WV Delay

 

 

(CB Setting NA)

 

 

 

WV Time

NA

10 sec.

0 sec.

10 sec.

0 sec.

10 sec.

when

 

 

 

 

 

 

ET≥41°F

 

 

 

 

 

 

(5°C)

 

 

 

 

 

 

(CB Setting 1)

 

 

 

 

 

 

Note: ET temperature is recorded 30 seconds after PM energizes in the preceding freeze cycle. Water temperature correction value (CB Setting 13) is added to ET temperature and this is used as WT value.

If CBT≤81°F (27°C) (CB Setting 74) at beginning of harvest cycle, HGV repeatedly energizes 40 sec./de-energizes 40 sec. If CBT≥118°F (48°C) (CB Setting 34) at beginning of harvest cycle, FM operates continuously in harvest cycle.

When ET reaches harvest cycle termination temperature (CB Setting 1) of 41°F (5°C) , HGV de-energizes, FM and AMU energize. Comp continues. WV energizes as listed in table above. Harvest cycle is complete when actuator motor PS indicates water tank is fully closed.

3. Freeze Cycle

Comp and FM continue. WV energizes for total time of WV Time 1 and WV Time 2 listed in table below. PM energizes after PM delay listed in table below.

 

CB

Initial Freeze

Initial Freeze after Bin Control

Normal Freeze

Note

after Power On

Initiated Restart

Setting

 

 

All WT

All WT

All WT

 

 

PD

12

30 sec. × 2

30 sec. × 2

30 sec.

WV Time 1

 

 

 

 

and PM Delay

 

 

 

 

PD

15

22 sec. × 2

22 sec. × 2

22 sec.

WV Time 2

 

 

 

 

FD

12

60 sec.

60 sec.

60 sec.

WV Time 1

 

 

 

 

and PM Delay

 

 

 

 

FD

15

44 sec.

44 sec.

44 sec.

WV Time 2

 

 

 

 

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Hoshizaki M029-897 service manual B. Sequence of Operation, Startup Cycle, Harvest Cycle, Freeze Cycle