ម៉ាស៊ីនផលិតទឹកកកស៊េរី SUB-ZERO Built-In BI

ព័ត៌មានអំពីប្រព័ន្ធ ICEMAKER

The operation of the icemaker used in the Built-In Series units is not complex, but understanding its components and operation cycle will assist a Service Technician in make proper diagnosis of problems.

ព្រមាន

ដើម្បីជៀសវាងការឆក់អគ្គិសនី តែងតែផ្តាច់ថាមពលអគ្គិសនីទៅអង្គភាពនៅពេលបម្រើម៉ាស៊ីនផលិតទឹកកក។

ចំណាំ៖

• Water fill time/volume in the BI Series is controlled by the electronic control ‘s microprocessor. The microprocessor observes the volumetric flow through the water valves via a low DC voltage signal from the flow meter, with every one revolution of the turbine inside the flow meter equaling 0.02 oz (0.5 ml) The electronic control instructs the valve to remain open long enough to deliver approximately 3.5 oz (105 ml) of water. This timeframe will vary depending on water pressure.
• Adjusting the water fill adjusting screw at the icemaker will have no effect on water fill time/volume.
• The “ICE MAKER” key on the control panel activates the icemaker system. If the ice cube icon is not displayed on the LCD, the icemaker system is OFF.
• To allow ice to freeze fully and reduce effects of low water pressure, the electronic control disables the icemaker system for 45 minutes after each ice harvest.
• Power to the freezer lights, is monitored to help control icemaker operation. If the freezer door is open, power to the icemaker is interrupted.
• ប្រព័ន្ធ​ផលិត​ទឹកកក​ត្រូវ​បាន​បិទ​នៅ​ពេល​អង្គភាព​ស្ថិត​នៅ​ក្នុង​របៀប Sabbath។

សមាសធាតុអ្នកផលិតទឹកកក

ខាង​ក្រោម​នេះ​គឺ​ជា​ការ​ពិពណ៌នា​ដែល​ពន្យល់​ពី​មុខងារ​នៃ​សមាសធាតុ​ផលិត​ទឹកកក​នីមួយៗ។ សមាសធាតុត្រូវបានដ្យាក្រាមក្នុងរូបភាពទី 5-1 នៅទំព័របន្ទាប់។
រូបភាព 5-1. Diagram of Icemaker Components

(For reference only. Individual components are not available for Service. If problems with the icemaker are discovered, the entire icemaker must be replaced)

គាំទ្រ – The support is the housing around the electrical components and wire connections. The support is attached to the ice mold.

បន្ទះម៉ោន – The drive motor, holding switch, water valve solenoid switch, timing gear, timing cam and water fill adjusting screw are attached to the metal mounting plate. The mounting plate is then attached to the support.

ម៉ូទ័រជំរុញ - វ៉ុល ACtage supplied to the drive motor causes the motor to operate. The motor has a single output shaft with a small gear. The motor gear drives/spins the timing gear.

ឧបករណ៍កំណត់ពេលវេលា – The timing gear is driven/spun by the drive motor gear and is attached to the timing cam.

កាមេរ៉ាកំណត់ពេលវេលា – The timing cam is attached to the timing gear and the ice ejector is inserted into the center of the timing cam. As the timing cam rotates, high and low spots on the cam operate the water valve solenoid switch and the holding switch. The timing cam also moves the lever arm side to side and rotates the ice ejector.

Ice Mold – The ice mold is where the eight crescent shaped ice cubes are formed.

ម៉ាស៊ីនកម្តៅផ្សិត – The mold heater uses 165 watts to thaw the ice free from the mold.

ឧបករណ៍បញ្ចេញទឹកកក – The drive end of the ice ejector is “D” shaped to fit into the “D” shaped hole in the timing cam.
It has eight blades which rotate and sweep the ice from the mold cavities during the ejection phase of the cycle.

ផ្ទាំងទឹកកក – The stripper is attached to the dumping side of the mold, serving as a decorative side cover and it also prevents ice from falling back into the mold.

សត្វខ្លាឃ្មុំ / ច្រកចូល – The bearing / inlet is attached to the ice mold, opposite the support. Water enters the bearing / inlet and is directed to the ice mold. The bearing/inlet also supports the ice ejector at the end opposite the timing cam.

ទែម៉ូស្តាត – The thermostat is a single-pole, single throw, bi-metal switch. At 15°F (-9°C) ± 3° it closes, starting the ice ejection phase.

Thermal-Mastic – A substance similar in appearance to grease that is applied between the thermostat and the ice mold. Its purpose is to increase thermal conductivity between the mold and the thermostat.

Lever Arm and Shut-off Arm – The lever arm is moved side to side by two revolutions of the timing cam. As it moves, it raises and lowers the shut-off arm and operates the shut-off switch to control the quantity of ice production. If the shut-off arm comes to rest on top of the ice in the storage bin during either revolution, the shut-off switch will re main open, stopping ice production at the end of that revolution.

កុងតាក់ Solenoid Valve ទឹក។ – A single-pole, double throw type switch that allows electricity to the water valve solenoid, opening the valve, during the fill cycle.

Holding Switch – A single-pole, double-throw type switch that assures completion of a revolution once the icemaker has been energized.

កុងតាក់បិទ – A single-pole, double-throw type switch that stops ice production when the ice bin is full.

TCO (Thermal Cut Out) – The TCO is thermal protection device in the wire harness that would open in the event of mechanical failure, thus protecting against over heating. (The TCO is not shown in diagram.)

ប្រតិបត្តិការអ្នកផលិតទឹកកក

ស៊េរី​នៃ​គ្រោងការណ៍​អគ្គិសនី​ខាងក្រោម​បង្ហាញ​ពី​វដ្ដ​នៃ​ម៉ាស៊ីន​ផលិត​ទឹកកក​ធម្មតា។ ខាងក្រោមគ្រោងការណ៍នីមួយៗគឺជាដ្យាក្រាមដែលបង្ហាញពីទីតាំងប្រហាក់ប្រហែលនៃឧបករណ៍បញ្ចេញទឹកកក និងដៃកម្រិតទឹកកកក្នុងដំណាក់កាលដែលគ្រោងការណ៍បង្ហាញ។

ដំណាក់កាលបង្កកនៃវដ្តបង្កើតទឹកកក (សូមមើលរូបភាព 5-2)

• The ice mold is filled with water.
• ទែម៉ូស្ដាតបើក។
• No icemaker components are energized.
  រូបភាព 5-2. The Freeze Phase
  

ការចាប់ផ្តើមនៃបដិវត្តន៍ទីមួយ (សូមមើលរូបភាព 5-3)

• ទឹកនៅក្នុងផ្សិតបានប្រែទៅជាទឹកកក។
• នៅ 15°F (-9°C) ± 3° ទែម៉ូស្តាតនឹងបិទ។
• ឧបករណ៍កម្តៅផ្សិតត្រូវបានបញ្ចូលថាមពលតាមរយៈទែម៉ូស្តាត។
• The drive motor is started through the thermostat and “normally closed” terminal of the holding switch.
• The ice ejector begins to turn and the shut-off arm begins to rise.
  រូបភាព 5-3. Start of First Revolution
  

បដិវត្តន៍ទីមួយបានបន្ត (សូមមើលរូបភាពទី 5-4)

• The holding switch is tripped by the timing cam to “normally open” thus holding power to the motor.
• ឧបករណ៍កម្តៅផ្សិតនៅតែមានថាមពលតាមរយៈទែម៉ូស្តាត។
• ដៃបិទចាប់ផ្តើមកើនឡើង។
  រូបភាព 5-4. First Revolution Continued
  

បដិវត្តន៍ទីមួយបានបន្ត (សូមមើលរូបភាពទី 5-5)

• The ice ejector reach the ice in the mold.
• ទឹកកក​ចេញ​ពី​ផ្សិត​នៅ​ពេល​ដែល​ប្រដាប់​ច្រាន​ចាប់ផ្តើម​បង្វិល​គូប​ចេញ។
• ម៉ូទ័រដ្រាយនៅតែមានថាមពលតាមរយៈកុងតាក់កាន់។
• ឧបករណ៍កម្តៅផ្សិតនៅតែមានថាមពលតាមរយៈទែម៉ូស្តាត។
• As the shut-off arm rises, the shut off switch is tripped to “normally closed”, and then the shut-off arm begins to lower.
  រូបភាព 5-5. First Revolution Continued
  

បដិវត្តន៍ទីមួយបានបន្ត (សូមមើលរូបភាពទី 5-6)

• The ice has released from the mold.
• ម៉ូទ័រនៅតែមានថាមពលតាមរយៈកុងតាក់កាន់។
• The shut-off arm is lowered and the shut off switch is tripped to “normally open”.
• The water valve solenoid switch is tripped by the timing cam, but the solenoid is not energized because the thermostat is still closed and energizing the mold heater. (Electric current follows the path of least resistance.)
  រូបភាព 5-6. First Revolution Continued
  

ចុងបញ្ចប់នៃបដិវត្តន៍ទីមួយ (សូមមើលរូបភាពទី 5-7)

• កុងតាក់ solenoid សន្ទះបិទបើកទឹកត្រូវបានបិទដោយកាមេរ៉ាកំណត់ពេលវេលាត្រឡប់ទៅ "បើកជាធម្មតា" ។
• The timing cam trips the holding switch to “normally close,” which ends the first revolution, but the thermostat is still closed, so the motor is again started.
• ឧបករណ៍កម្តៅផ្សិតនៅតែមានថាមពលតាមរយៈទែម៉ូស្តាត។
  រូបភាព 5-7. End of First Revolution
  

ចំណាំ៖ If thermostat is open at this time the motor will stop. Thermostat must be closed/cold enough; 15°F (-9°C) ± 3° or less.

ការ​ចាប់​ផ្តើ​ម​នៃ​បដិវត្តន៍​លើក​ទី​ពីរ​: (មើល​រូបភាព 5-8​)

• កុងតាក់ solenoid សន្ទះបិទបើកទឹកត្រូវបានបិទដោយកាមេរ៉ាកំណត់ពេលវេលាត្រឡប់ទៅ "បើកជាធម្មតា" ។
• The timing cam trips the holding switch to “normally close,” which ends the first revolution, but the thermostat is still closed, so the motor is again started.
• ឧបករណ៍កម្តៅផ្សិតនៅតែមានថាមពលតាមរយៈទែម៉ូស្តាត។
  រូបភាព 5-8. Start of Second Revolution
  

បដិវត្តន៍ទីពីរបានបន្ត (សូមមើលរូបភាពទី 5-9)

• ម៉ាស៊ីនកម្តៅផ្សិតបានធ្វើឱ្យកម្តៅកម្តៅឡើង ដូច្នេះទែម៉ូស្តាតនឹងបើក ហើយម៉ាស៊ីនកម្តៅផ្សិតត្រូវបានអស់ថាមពល។
• If the shut-off arm comes to rest on top of the ice in the storage bin (as illustrated), so the shut-off switch will re main in the “normally closed” position.
• ម៉ូទ័រនៅតែមានថាមពលតាមរយៈកុងតាក់កាន់។
  រូបភាព 5-9. Second Revolution Continued
  

បដិវត្តន៍ទីពីរបានបន្ត (សូមមើលរូបភាពទី 5-10)

• The water valve solenoid switch is tripped by the timing cam. This time the solenoid is energized because the thermostat is open. The water solenoid is open for approximately seven seconds, filling the ice mold with water.
• the mold heater is energized through the solenoid switch and holding switch.
  រូបភាព 5-10. Second Revolution Continued
  

ចុងបញ្ចប់នៃវដ្តបង្កើតទឹកកក (សូមមើលរូបភាព 5-11) 

• The water valve solenoid switch is tripped by the timing cam back to “normally open” ending the water fill.
• The timing cam trips the holding switch to “normally close,” which ends the second revolution.
• ទែម៉ូស្តាតនៅតែបើក ដូច្នេះវាមិនចាប់ផ្តើមម៉ូទ័រដ្រាយទេ។
• If the shut-off arm has come to rest on top of the ice in the storage bin (as illustrated), the shut-off switch re mains in the “normally closed” position.
  This interrupts power from reaching the thermostat, until sufficient ice has been removed from the storage bin allowing the shut-off arm to lower.
  រូបភាព 5-11. End of Ice Making Cycle
  

ចំណាំ៖ To allow ice to freeze fully and reduce effects of low water pressure, the electronic control system disables the icemaker system for 45 minutes after each ice harvest.

ការបញ្ឈប់ការផលិតទឹកកកដោយដៃ

Ice production can be manually stopped two ways:

1. ចុចគ្រាប់ចុច “ICE MAKER” នៅលើផ្ទាំងបញ្ជា ដើម្បីកុំឱ្យរូបតំណាងដុំទឹកកកមិនត្រូវបានបង្ហាញនៅលើ LCD ។
2. ដាក់ដៃបិទ/បិទកម្រិតទឹកកកក្នុងទីតាំងឡើង/បិទ (សូមមើលរូបភាពទី 5-12)។
   រូបភាព 5-12. Stopping Icemaker
   

កំពុងចាប់ផ្តើមម៉ាស៊ីនផលិតទឹកកកដោយដៃ

ចំណាំ៖ To allow ice to freeze fully and reduce effects of low water pressure, the electronic control disables the icemaker system for forty-five (45) minutes after each ice harvest. To bypass this 45 minute dwell for service purposes, press the “ICE MAKER” key at the control panel to switch the system OFF, then again to switch it back ON.

នីតិវិធីចាប់ផ្តើមដោយដៃ៖ 

ចំណាំ៖ To help avoid ice production when the ice bucket may be out of place, there is a three (3) minute delay of icemaker operation when the freezer door is opened, then closed, unless the unit is set for MAX ICE production. Before attempting to manually start the icemaker, press the MAX ICE key on control panel to initiate the MAX ICE feature and press the door switch, then:

1. ជូតគម្របខាងមុខម៉ាស៊ីនផលិតទឹកកកពីផ្នែកជំនួយដោយប្រើទួណឺវីសសំប៉ែត ឬកាក់។
2. With a flat-blade screwdriver, turn the drive gear counterclockwise until the holding switch is activated, completing the circuit to the drive motor (this will be about a 1/8 turn). (See Figure 5-13) The icemaker will then complete its cycle automatically.
   រូបភាព 5-13. Manually Start Icemaker
   

ចំណាំ៖ If after 1/4 turn the icemaker is not running on its own, it may be in the 45 minute dwell period, the MAX ICE feature has not been initiated, the door switch is not being pressed closed, or there is an electrical or mechanical problem.

ការធ្វើតេស្តកំហុសអ្នកផលិតទឹកកក

Bypass 45-minute dwell by pressing ICE MAKER key to OFF, then again to ON. Now, depress the freezer light switch and manually start icemaker by turning driver gear counter-clockwise with screwdriver.

1. If icemaker starts & finishes cycle:
   (ចំណាំ៖ ប្រសិនបើ > 15°F អ្នកផលិតទឹកកកនឹងបញ្ចប់បដិវត្ត 1 ប៉ុណ្ណោះ។
   • a. Visually inspect electrical connections at icemaker & valve. Repair if necessary.
   • b. Check valve operation with test cord, if doesn’t open, replace valve.
   • c. Check thermostat. (Open: 48°F ±6°, Close: 15°F ±3°). Replace icemaker if defective.
   • d. With icemaker in park position, check solenoid switch terminals “C” & “NO” for continuity. With ejector between 8:00 & 10:00 position, check solenoid switch terminals “C” & “NC” for continuity. If no continuity for either terminal check, replace icemaker.
2. If icemaker starts but does not finish cycle:
   • a. With icemaker in park position check holding switch terminals “C” & “NC” for continuity. Then with icemaker ejector between 10:00 & 12:00, check holding switch terminals “C” & “NO” for continuity. If no continuity for either terminal check, replace icemaker. (Refer to enclosed wiring diagram)
   • b. With icemaker in park position check shut-off switch terminals “C” & “NO” for continuity. With ejector between 12:00 & 2:00 check shut-off switch terminals “C” & “NC” for continuity. If no continuity for either terminal check, replace icemaker.
   • c. Check mold heater for 75-85Ω. If outside range, heater is bad, replace icemaker. If heater checks OK, thermostat is bad, replace icemaker.
3. If icemaker motor does NOT start:
   • a. Lower shutoff arm
   • b. Check motor operation with test cord. If motor doesn’t run, replace icemaker.
   • c. Check power to and from icemaker rocker switch (if present). Reconnect or repair connection or replace switch as necessary.
   • d. With MAX ICE feature initiated and door switch pressed, check for power from control board. If power is present check & repair electrical connections between control board to icemaker. If no power at control board, replace control board.

ឯកសារយោងរហ័ស 

• ពេលវេលាបំពេញទឹក។: May vary by water pressure
• Fill Tube Heater Ohm: 2850-3890Ω
• Mold Heater Ohm: 75-85Ω
• Water Valve Ohm: 160-165Ω
• Thermostat Open/Close – Open: 48°F ±6° Close: 15°F ±°3
• Water Pressure Needed: 30 -120 psi constant

ចំណាំ៖ This is a filtered water specification as non-filtered systems are rated at 20-100 psi.

ការដោះស្រាយបញ្ហាអ្នកផលិតទឹកកក 

ទេ / ផលិតកម្មទឹកកកយឺត

1. Ice maker system switched OFF. Switch system ON.
2. Shut off arm in up/OFF position. Move to ON position.
3. Freezer too warm. Check temp’s & see troubleshooting guide in service manual.
4. Poor airflow over icemaker. Remove obstructions.
5. Ice cube jam. Remove ice.
6. Water froze in inlet tube. Remove ice from tube. Check for power from control board to fill tube heater; Fill tube heater = 2850-3890Ω.
7. Water supply not constant 20-120 psi. Instruct customer.
8. Water line to unit pinched/kinked/clogged. Repair line.
9. Saddle valve not installed correctly. Reposition.
10. Saddle valve not fully open. Open valve fully.
11. ខ្សែភ្លើង/ការតភ្ជាប់រលុង/ខូច។ ជួសជុលខ្សែភ្លើង។
12. សន្ទះបិទបើកទឹក / ការតភ្ជាប់រលុង / ខូច។ ជួសជុលខ្សែភ្លើង។
13. Defective water valve. Valve =160-165Ω. Replace valve.
14. ខ្សែកម្តៅ/ការតភ្ជាប់រលុង/ខូច។ ជួសជុលខ្សែភ្លើង។
15. TCO overheat or short. Fix cause or replace icemaker.
16. សូមមើលការធ្វើតេស្តកំហុសរបស់ Icemaker ។

គ្មានការបំពេញទឹក។

1. Water supply switched OFF. Switch supply water line ON.
2. Water line to unit pinched/kinked/clogged. Repair line.
3. Saddle valve not installed correctly to supply line.
   ទីតាំងឡើងវិញ។
4. Water froze in inlet tube. Remove ice from tube. Check for power from control board to fill tube heater; Fill tube heater = 2850-3890Ω.
5. សន្ទះបិទបើកទឹក / ការតភ្ជាប់រលុង / ខូច។ ជួសជុលខ្សែភ្លើង។
6. Defective water valve. Valve =160-165Ω. Replace valve.

ទម្រង់លើសចំណុះ / ដុំទឹកកកក្នុងធុង / គូបធំ

1. Icemaker not level. Level icemaker.
2. ឯកតាមិនមានកម្រិត។ ឯកតាកម្រិត
3. Water supply not constant 20-120 psi. Instruct customer.
4. Water froze in inlet tube. Remove ice from tube. Check for power from control board to fill tube heater; Fill tube heater = 2850-3890Ω.
5. Defective water valve. Valve =160-165Ω. Replace valve.
6. Improper fill signal from control board; replace control board.

ដុំទឹកកកប្រហោង ឬតូច

1. Icemaker not level. Level icemaker.
2. ឯកតាមិនមានកម្រិត។ ឯកតាកម្រិត
3. Water supply not constant 20-120 psi. Instruct customer.
4. Too little  thermal mastic on thermostat. Add  thermal mastic.
5. ទែម៉ូស្ដាតមានកំហុស (បើក = 48°F ±6°, Close = 15°F ±3°)។
   Replace icemaker.
6. Improper fill signal from control board; replace control board.

ទឹកកកច្រើនពេក

1. Shut off arm/linkage bent, broken or disconnected. Repair, replace o reconnect arm/linkage.
2. If ejector blades rotate with arm in up/OFF position = Icemaker faulty. Replace icemaker.

ឯកសារ/ធនធាន

ម៉ាស៊ីនផលិតទឹកកកស៊េរី SUB-ZERO Built-In BI [pdf] សៀវភៅណែនាំ Built-In BI Series, Built-In BI Series Ice Maker, Ice Maker, Maker

ឯកសារយោង

• សៀវភៅណែនាំអ្នកប្រើប្រាស់