HoshizakiメーカーKM-2400SRH3の使用説明書/サービス説明書
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™ SER VICE MANUAL NUMBER: 73090 KM-2400SRF3 KM-2400SRH3 ST ACKABLE CRESCENT CUBER R eliability is a beautiful thing TM REVISED: DEC, 14, 2003 ISSUED: DEC.
2 HOSHIZAKI AMERICA, INC. 618 Highway 74 South Peachtree City , GA 30269 Attn: HOSHIZAKI T echnical Support Department Phone: 1-800-233-1940 T echnical Service (770) 487-2331 Fax: (770) 487-3360 NOTE:.
3 Please review this manual. It should be read carefully before the icemaker is serviced or maintenance operations are 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.
4 7. REMOVAL AND REPLACEMENT OF EVAPORATOR ....................................... 38 8. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE ...................... REGULATOR (C.P.R.) .........................................................................
5 I. SPECIFICATIONS KM-2400SRF3, KM-2400SRH3 (Remote air-cooled, 3 phase) We reserve the right to make changes in specifications and design without prior notice.
6 2. CONDENSING UNIT, URC-24F.
7 SPECIFICATIONS MODEL: URC-24F EXTERIOR DIMENSIONS (W x D x H) REFRIGERANT CHARGE URC-24F WEIGHT CONNECTIONS REFRIGERANT ELECTRICAL CONDENSER AC SUPPLY VOLTAGE AMBIENT CONDITION Galvanized Steel 36” x 19-3/4” x 43-3/4” (915 x 501 x 1111 mmmm) R404A 11 lbs.
8 Evaporator Spray Tube Water Valve Water Supply Inlet Transformer Box Header Junction Box CPR Valve Receiver Tank Drier Line Valve Water Pump Float Switch Pressure Switch Cleaning Valve Control Box Expansion Valve Hot Gas Valve Compressor II. GENERAL INFORMA TION 1.
9 2. CONTROLLER BOARD [a] SOLID-STATE CONTROL 1) A HOSHIZAKI exclusive solid-state control is employed in KM-2400SRF3 and KM-2400SRH3 Stackable Crescent Cubers. 2) A Printed Circuit Board (hereafter called “Controller Board”) includes a stable and high quality control system.
10 2) Defrost Timer The defrost cycle starts when the Float Switch opens and completes the freeze cycle. But the Defrost Timer does not start counting until the Thermistor senses 48°F at the Evaporator outlet.
11 The green LED’s 1-4 represent the corresponding relays and energize and sequence 5 seconds from initial startup as follows: Sequence Step LED’s on Length: Min. Max. Avg. 1 Minute Fill Cycle LED4 60 sec. Harvest Cycle LED1, 4, & 2 2 min. 20 min.
12 (Control Products HOSHIZAKI001 Board) to the K1 connector. If there is a white wire, place the switch in the C position. If this switch is placed in the wrong position either the compressor contactor will remain ener- gized with the control switch OFF or the unit will not start.
13 (Control Products HOS-001A Board).
14 4. Defrost Timer stops counting. Defrost cycle is completed and freeze cycle starts. [c] SEQUENCE 1st Cycle 1. Unit energized and Control Switch to “ICE” position. Water supply cycle starts. 2. After 1 minute. Defrost cycle starts. IMPORTANT Water Valve opening is limited to 6 minutes.
15 2nd Cycle and after with pump drain IMPORTANT Freeze cycle time is limited to 50 minutes even if Float Switch does not open. 1. Float Switch opens and signals to complete freeze cycle. Drain timer starts counting. 2. Drain timer stops counting. Pump drain is completed 3.
16 2nd Cycle and after with no pump drain IMPORTANT Freeze cycle time is limited to 50 minutes even if Float Switch does not open. 1. Float Switch opens and signals to complete freeze cycle. 2. Thermistor reads 48° F. Defrost Timer starts counting. IMPORTANT Water Valve opening is limited to 6 minutes.
17 DIP SWITCH NO. 1 2 3 4 5 6 7 8 9 10 OFF OFF ON OFF OFF OFF OFF OFF OFF ON [d] CONTROLS AND ADJUSTMENTS The Dip Switch is factory-adjusted to the following positions: Switch Nos. 1 and 2: Used for adjustment of the Defrost Timer. The Defrost Timer starts counting when the Thermistor reads a certain temperature at the Evaporator outlet.
18 1) Defrost Control A thermistor (Semiconductor) is used for a defrost control sensor. The resistance varies depending on the Suction Line temperatures. The Thermistor detects the temperature of the Evaporator outlet to start the Defrost Timer. No adjustment is required.
19 3) Drain Timer The Drain Timer is factory-adjusted, and no adjustment is required. SETTING TIME Dip Switch Dip Switch No. 3 No. 4 T 1 T 2 OFF OFF 10 seconds 150 seconds ON OFF 10 seconds 180 second.
20 6) Bin Control CAUTION When the ambient temperature is below 45°F, the Bin Control Thermostat operates to stop the icemaker even if the Ice Storage Bin is empty. When the Thermostat is set in the prohibited range, the icemaker operates con- tinuously even if the Ice Storage Bin is filled with ice.
21 (iv) After Step (iii), de-energize the unit and confirm that the Defrost Timer is in the minimum position. Disconnect the resistor from the Controller Board, and energize the unit. After the 1 minute water supply cycle, the defrost cycle starts. Reconnect a 1.
22 III. TECHNICAL INFORMA TION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT.
23 2. WIRING DIAGRAM High Pressure Switch ACB-2UB09 Cut-out 41 2 PSIG Cut-in 327 ± 21 PS IG +21 0.
24 3. TIMING CHART *1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II. 2. [d] CONTROLS AND ADJUSTMENTS.”.
25 *1 The Pump Motor waits for 2 seconds before starting a drain cycle. See “II. 2. [d] CONTROLS AND ADJUSTMENTS.” *2 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes.
26 4. PERFORMANCE DA T A KM-2400SRF3, KM-2400SRH3 (Remote air-cooled, 3 phase) We reserve the right to make changes in specifications and design without prior notice. Note: Pressure data is recorded at 5 minutes into freezing cycle. The data NOT in BOLD should be used for reference only.
27 PROBLEM POSSIBLE CAUSE REMEDY [1] The icemaker a) Power Supply 1. “OFF” position. 1. Move to “ON” position. will not start 2. Loose connections. 2. Tighten. 3. Bad contacts. 3. Check for continuity and replace. 4. Voltage too high. 4. Check and get recommended voltage.
28 PROBLEM POSSIBLE CAUSE REMEDY l) Controller Board 1. Defective. 1. See “II.2[e] CHECKING CONTROLLER BOARD.” m) Interlock Switch 1. “OFF” position. 1. Move to “ON” position. (Cleaning Valve) 2. Bad contacts. 2. Check for continuity and replace.
29 PROBLEM POSSIBLE CAUSE REMEDY [5] No water a) Water Supply Line 1. Water pressure too low and 1. Check and get comes from water level in Water Tank recommended pressure. Spray Tubes. too low. Water Pump b) Water Solenoid 1. Dirty mesh filter or orifice 1.
30 2. EV APORA TOR IS FROZEN UP PROBLEM POSSIBLE CAUSE REMEDY [1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace. time is too defective switch. long. 2. Float does not move freely. 2. Clean or replace. b) Water Solenoid 1.
31 PROBLEM POSSIBLE CAUSE REMEDY [1] Icemaker will a) Bin Control 1. Set too cold. 1. Adjust warmer. not stop when Thermostat 2. Defective. 2. Replace. bin is filled with ice. [2] Abnormal a) Pump Motor 1. Bearings worn out. 1. Replace. noise b) Fan Motor 1.
32 V. REMOVAL AND REPLACEMENT OF COMPONENTS IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after the equipment is serviced.
33 5) Disconnect the Vacuum Pump, and attach a Refrigerant Service Cylinder to the High- side line. Remember to loosen the connection, and purge the air from the Hose. See the Charge Label in the machine compartment. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No.
34 3. REMOV AL AND REPLACEMENT OF COMPRESSOR IMPORT ANT Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made.
35 15) Evacuate the system, and charge it with refrigerant. See the Charge Label in the machine compartment for the required refrigerant charge. 16) Connect the Terminals, and replace the Terminal Cover in its correct position. 17) Replace the panels in their correct positions.
36 5. REMOV AL AND REPLACEMENT OF EXP ANSION V AL VE IMPORT ANT Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve. Always install a new Drier every time the sealed refrigeration system is opened.
37 6. REMOV AL AND REPLACEMENT OF HOT GAS V AL VE AND LINE V AL VE CAUTION Always use a copper tube of the same diameter and length when replacing the hot gas lines; otherwise the performance may be reduced. IMPORT ANT Always install a new Drier every time the sealed refrigeration system is opened.
38 11) Connect the new Solenoid leads. 12) Attach the Solenoid to the valve body, and secure it with a screw. 13) Replace the panels in their correct positions. 14) Turn on the power supply. 7. REMOV AL AND REPLACEMENT OF EV APORA T OR IMPORT ANT Always install a new Drier every time the sealed refrigeration system is opened.
39 8. REMOV AL AND REPLACEMENT OF CONDENSING PRESSURE REGULA TOR (C.P .R.) IMPORT ANT Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made. 1) Turn off the power supply.
40 9. REMOV AL AND REPLACEMENT OF THERMIST OR CAUTION 1. Fragile, handle very carefully. 2. Always use a recommended sealant (High Thermal Conductive Type), Model KE4560RTV manufactured by SHINETSU SILICONE, Part Code 60Y000-11, or Part Code 4A0683-01 equivalent.
41 10. REMOV AL AND REPLACEMENT OF F AN MOT OR Note: When replacing a Fan Motor with defective winding, it is recommended that a new capacitor be installed. 1) Turn off the power supply. 2) Remove the panels. 3) Remove the Junction Box Cover from the remote condenser unit.
42 1 1. REMOV AL AND REPLACEMENT OF W A TER V AL VE 1) Turn off the power supply. 2) Close the Water Supply Line Shut-off Valve. 3) Remove the Front Panel. 4) Remove the Valve Outlet Tubing by releasing the Clamp. 5) Remove the Bracket from the unit. 6) Remove the Fitting Nut and Water Valve.
43 7) Remove the closed end connectors from the Pump Motor leads. 8) Remove the two screws and the Pump Motor Bracket. 9) Remove the Pump Housing, and check the Impeller. 10) If the Impeller is defective, install a new Impeller. 11) Install the new motor or new parts, and replace the removed parts in the reverse order of which they were removed.
44 VI. CLEANING AND MAINTENANCE INSTRUCTIONS IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment.
45 [2] Drain the Potable Water Tank: 1) Turn off the power supply. 2) Move the Control Switch to the “OFF” position. 3) Drain the Water Tank by removing the Insulation Panel and the Cap located on the front bottom part of the Ice Dropping Hole. See Fig.
46 2. CLEANING PROCEDURE IMPORTANT Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment. WARNING 1. HOSHIZAKI recommends cleaning this unit at least once a year. More frequent cleaning, however, may be required in some existing water conditions.
47 [a] CLEANING PROCEDURE 1) Dilute 38 fl. oz. of the recommended cleaner Hoshizaki “Scale Away” or “LIME-A-WAY” (Economics Laboratory, Inc.) with 7 gal. of water. 2) Remove all ice from the Evaporator and the Storage Bin. Note: To remove cubes on the Evaporator, turn off the power supply and turn it on after 3 minutes.
48 19) Turn on the power supply to fill the Water Tank with water. 20) Turn off the power supply after 3 to 5 minutes. 21) Remove the Front Panel, and fully open the Cleaning Valve. 22) Move the Control Switch to the “Wash” position. 23) Replace the Front Panel in its correct position.
49 [b] SANITIZING PROCEDURE - Following Cleaning Procedure 1) Dilute a 5.25% Sodium Hypochlorite solution (chlorine bleach) with water (Add 3.5 fl. oz. of sanitizer to 7 gal. of water). 2) Remove the Insulation Panel, if it is in its normal position. 3) Pour the sanitizing solution into the Water Tank.
50 3. MAINTENANCE IMPORT ANT This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. 1) Stainless Steel Exterior To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth.
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