Service Manual
Table Of Contents
- Important Safety Information
- I. Specifications
- II. General Information
- A. Construction
- B. Sequence of Operation
- C. Control Board
- 1. Control Board Layout
- 2. LED Lights and Audible Alarm Safeties
- 3. Controls and Adjustments
- a) Default Dip Switch Settings
- b) Harvest Timer (S4 dip switch 1 & 2)
- c) Pump-Out Timer (S4 dip switch 3 & 4)
- d) Pump-Out Frequency Control (S4 dip switch 5 & 6)
- e) Harvest Pump Timer (S4 dip switch 7)
- f) Factory Use (S4 dip switch 8)
- g) Freeze Timer (S4 dip switch 9 & 10)
- h) Float Switch Control (S5 dip switch 1)
- i) Refill Counter (S5 dip switch 2 through 5)
- D. Control Switch
- III. Technical Information
- IV. Service Diagnosis
- V. Replacement of Components
- VI. Cleaning and Maintenance
19
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6
ON
S4
S5
3. Controls and Adjustments
NOTICE
Dip switches are factory set. Failure to maintain factory settings may adversely
affect performance and warranty coverage. For more information, contact
Hoshizaki Technical Support at 1-800-233-1940.
a) Default Dip Switch Settings
The dip switches are factory set to the following positions:
S4 Dip Switch
Model
S4 Dip Switch No.
1 2 3 4 5 6 7 8 9 10
KMS-830MLH
OFF OFF OFF OFF ON ON ON OFF OFF OFF
S5 Dip Switch (Do Not Adjust)
Model
S5 Dip Switch No.
1 2 3 4 5
KMS-830MLH OFF OFF OFF OFF OFF
b) Harvest Timer (S4 dip switch 1 & 2)
The harvest timer starts when the thermistor reads 48°F (9°C) at the evaporator outlet
and the control board reads the thermistor's 3.9 kΩ signal. The harvest timer is factory
set, and generally no adjustment is required. However, a setting longer than the factory
setting may be advised in cases where harvest needs to be prolonged for extra cleaning.
Before changing this setting, contact your local Hoshizaki distributor or Hoshizaki
Technical Support at 1-800-233-1940 for recommendations. Keep in mind that setting the
harvest timer to a longer setting decreases 24-hour production.
The pump-out timer (S4 dip switch 3 & 4) acts in place of the harvest timer during cycles
withapump-out.Fordetails,see"II.C.3.c)Pump-OutTimer(S4dipswitch3&4)."
S4 Dip Switch Setting Time
(seconds)
No. 1 No. 2
OFF OFF 60
ON OFF 90
OFF ON 120
ON ON 180
Freeze Timer (9 & 10)
Pump-Out Frequency Control (5 & 6)
Pump-Out Timer (3 & 4)
Harvest Timer (1 & 2)
Harvest Pump Timer (7) (Do not adjust)
Factory Use (8)
S4 Dip Switch
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6
ON
S4
S5
Do Not Adjust
S5 Dip Switch
Rell Counter
(2 through 6)
Float Switch
Selector (1)