Related Manuals for Hoshizaki HDF-140A-SEA
Summary of Contents for Hoshizaki HDF-140A-SEA
- Page 1 DEEP FREEZER HDF-140A-SEA HDF-300A-SEA HDF-400A-SEA SERVICE MANUAL V112-1181 (083024)
-
Page 2: Table Of Contents
CONTENTS PAGE I. GENERAL INFORMATION --------------------------------------------------------------------------1 1. SAFETY INSTRUCTIONS -------------------------------------------------------------------------1 2. DIMENSIONS/SPECIFICATIONS ---------------------------------------------------------------3 [a] HDF-140A-SEA ----------------------------------------------------------------------------------3 [b] HDF-300A-SEA ----------------------------------------------------------------------------------4 [c] HDF-400A-SEA -----------------------------------------------------------------------------------5 3. PACKAGING SPECIFICATIONS ----------------------------------------------------------------6 4. CONSTRUCTION ------------------------------------------------------------------------------------6 4-1. Construction ------------------------------------------------------------------------------------6 4-2. Operation panel --------------------------------------------------------------------------------8 II. TECHNICAL INFORMATION -----------------------------------------------------------------------9 5. -
Page 3: General Information
GENERAL INFORMATION 1. SAFETY INSTRUCTIONS The following instructions contain important safety precautions and should be strictly observed. The terms used here are defined as follows: WARNING: There is a possibility of death or serious injury to the service person and a third party or the user due to improper service operations or defects in serviced products. - Page 4 8. Keep the following in mind when making electrical connections: (1) Check for proper earth connections, and repair if necessary to prevent electric shocks. (2) Always use service parts intended for the applicable models for replacement of defective parts. Use proper tools to secure the wiring. Otherwise abnormal operation or trouble may occur and cause electric leaks or fire.
-
Page 5: Dimensions/Specifications
2. DIMENSIONS/SPECIFICATIONS [a] HDF-140A-SEA... - Page 6 [b] HDF-300A-SEA...
- Page 7 [c] HDF-400A-SEA...
-
Page 8: [B] Hdf-300A-Sea
3. PACKAGING SPECIFICATIONS Weight Gross weight Width Depth Height Model name Stacks (kg) (kg) (mm) (mm) (mm) HDF-140A-SEA Max. 3 stacks HDF-300A-SEA 1325 HDF-400A-SEA 1625 4. CONSTRUCTION Handle Door Lock 4-1. Construction Door Spacer and Breaker Strip * Equalize pressure when... - Page 9 Switching Regulator Control Board Rocker Switch Fuse and Fuse Holder Power Relay Buzzer Automatic Hinge * Assist function is adjustable. Torx bolts are used to prevent theft. Control Box (B) Assy Start Capacitor Run Capacitor Start Relay Wire Condenser [HDF-300/400A-SEA] Drain Cap Drain...
-
Page 10: Operation Panel
4-2. Operation panel [1] Power Switch Turns on/off the unit. [2] Temperature Display Indicates the cabinet temperature. Flashes error code when an error occurs. [3] Check Lamp Lights up when an error occurs. [4] Set Key Displays/changes the cabinet temperature. [5] Up/Down Key Increases/decreases the cabinet temperature. -
Page 11: Technical Information
TECHNICAL INFORMATION 5. WIRING DIAGRAM [a] HDF-140A-SEA... - Page 12 [b] HDF-300/400A-SEA...
-
Page 13: Refrigeration Circuit
6. REFRIGERATION CIRCUIT ⒸRefrigeration Circuit HDF-SEA series Space between exterior and interior Pipe on Sheet Evaporator Inlet Pipe on Sheet Condenser Outlet Wire Condenser Heat Exchanger Dryer Suction Pipe Discharge Pipe Outlet Inlet... -
Page 14: Operating Instructions
7. OPERATING INSTRUCTIONS 7-1. Control 7-1-1. Set temperature Temperature setting range: -60 to -50°C (factory-adjusted to -60°C) Maximum setting: -70 to -40°C (cabinet temperature upper limit: C3, lower limit: C4) * Setting is adjustable in CF2 mode. 7-1-2. Cabinet temperature differential (ON temp) Set temp (OFF temp) - Page 15 - When the cabinet temperature is the same as or lower than the compressor OFF temperature (cabinet set temperature), --> the compressor stays stopped even after 5 minutes have passed. The compressor starts when the cabinet temperature reaches the compressor ON temperature.
- Page 16 7-1-5. Quick start 1) Press and hold the set key and turn on the power supply. All LED lamps light up for 1 second, and the display shows the set model code for 5 seconds. Then the compressor starts up. 2) The operation at the quick start depends on the cabinet temperature when the power supply is turned on.
-
Page 17: Service Information
SERVICE INFORMATION 8. CONTROL BOARD SETTING 8-1. Maintenance mode 1) Press and hold the down key and set key for 5 seconds to enter the maintenance mode. The display indicates the code “tr”. 2) Use the up/down key until the display indicates the desired setting code. 3) Press the set key. - Page 18 Code Item Description a1. Fan motor b1. Compressor c1. --- d1. --- e1. Remote alarm (buzzer) g1. --- h1. --- Port input/output a2. Fan motor frequency generator pulse b2. --- h2. --- First digit: Compressor state 0: Waiting for OFF time 2: Stop for high pressure 3: Waiting for cabinet temperature to reach ON High pressure state...
-
Page 19: Service Mode
Code Item Description Model code (ON for 3.5 seconds) (OFF for 0.3 seconds) - - indication (OFF for 0.3 seconds) Model code indication First 2 digits (ON for 1.7 seconds) (OFF for 0.3 seconds) Last 2 digits (ON for 1.7 seconds) (OFF for 2.0 seconds) 8-2. -
Page 20: Function Mode [Cf2]
4) Press and hold the set key for 2 seconds. The code “rc” flashes in the display. 5) Press and hold the set key for 2 seconds while “rc” is flashing. The code “oF” flashes in the display. Then turn off the power supply. CF1 Model code Model Hexadecimal digit HDF-140A-SEA -1.0 -2.0 HDF-300A-SEA -1.0 -2.0 HDF-400A-SEA -1.0... -
Page 21: Trouble Shooting
Code Item Unit Range 1: Increment 2: Default C2 Corrected temperature -5.0 to +5.0 -1.0 Upper limit of cabinet °C -50 to -40 temperature setting Lower limit of cabinet °C -70 to -60 temperature setting C5 Upper limit of differential 0 to +5.0 Depends on model C6 Lower limit of differential... - Page 22 Error Item Description Operation code Cabinet thermistor The cabinet thermistor senses 70°C or more Continue error 1 and remains shorted for 10 minutes or more. * Resettable. Cabinet thermistor The cabinet thermistor senses -80°C or less Continue error 2 and has an open circuit. * Resettable.
- Page 23 Compressor thermistor Error “91” Compressor operation prohibition control (reset when unit is turned off) Error “91” Error “47” Short circuit repaired “47”, “91” reset Compressor operation prohibition control Figure 1 Fan motor stops Figure 2...
-
Page 24: Possible Causes And Remedies
9-2. Possible causes and remedies Error Item Possible cause Reset code Components - Press and hold the up key - Compressor control error for 3 seconds. - Compressor error - The error resets - Control board error automatically when the - Refrigeration circuit error (e.g. -
Page 25: Service Diagnosis
Error Item Possible cause Reset code - Main control board error Turn off the power supply - Main control board malfunction and turn it back on after 30 Main control board seconds. setting error (The error does not reset by using the up key.) - Fan motor error Remove the cause of the Fan motor error... - Page 26 Possible cause Problem * Numbers corresponding to “9-4. Component diagnosis”. Compressor No error Cabinet overloaded refrigeration runs with no indication Door gap refrigeration Door gasket damaged Too much frost (4) Cabinet Improper location thermistor Frost built up around thermistor Dirt inside thermistor cover (13) Clogged Clogged capillary tube or refrigeration...
-
Page 27: Component Diagnosis
9-4. Component diagnosis Component Problem Remedy Fuse blown out Replace (1) Fuse Open circuit, connectors/pins Repair or replace disconnected Input/output (control board, relay, fan motor thermistor or buzzer) failure See wiring label Main control Cabinet thermistor input failure Replace board See wiring label 7 segment display partially/totally off Replace Up/down key not available... - Page 28 Component Problem Remedy Abnormal winding resistance Replace unit (normally as follows: NEU2140U: 7.79 ± 8% (main), 24.26 ± 8% (sub) at 25°C NEU2155U: 5.97 ± 8% (main), 14.10 ± 8% (sub) at 25°C Abnormal insulation resistance Replace unit (normally 1 MΩ or more at 500V) Abnormal noise Replace unit Insufficient compression (discharge...
-
Page 29: Refrigeration Circuit Diagnosis
This freezer uses a mixed refrigerant. Repair of the refrigeration circuit at the installation site is not allowed. Follow the instructions below for accurate diagnosis. For the defects requiring the product replacement, contact your local Hoshizaki service agent. High temp error Error code “60”... -
Page 30: Parts Repairing
10. PARTS REPAIRING 10-1. Control board Check by user If receiving a service call, ask the user to turn off the power to the unit and turn it on again after 30 seconds. When the control board is malfunctioning for some reasons, normal operation may resume once the power is turned off. -
Page 31: Thermistor
- Do not drop the control board on the floor. The control board is fragile. - Put the control board on a flat surface and prevent damage to the electronic parts and devices. - To prevent damage, do not pull the thermistor wires with thin insulations. - To prevent disconnection, do not pull the connectors. -
Page 32: Compressor Fan Motor
10-4 Compressor fan motor 1) Disconnect the connector that is connected to the compressor fan motor. 2) Check if the voltage of 12V DC is applied to the motor drive line. (+ : red, - : dark blue) 3) Check if the voltage of 1.8 to 3.5V DC is applied to the motor control line. (+ : yellow, - : dark blue) But 1.8 to 3.5V DC can be checked only when the compressor fan motor is running. -
Page 33: Parts Replacement
11. PARTS REPLACEMENT - Always unplug the unit or turn off the main power supply before replacing parts. - To reattach the removed parts, reverse the removal procedure. 11-1. Exterior panels 11-1-1. Side panel Loosen the screws on the right and back sides. 11-1-2. - Page 34 11-2-1. Door assy 1) Remove the hinge cover. Use a pointed tool to lever the cover up toward you, and then pull it off. Be careful not to damage the cover. Hinge Cover 2) Remove the screws securing the door and hinge with the door open.
- Page 35 The hinge has a door opening/closing assist function. Adjust torque according to the table below for each model. * Adjust torque with the door open. * Use the table below for reference only. Adjust torque to keep the door open. Hinge Adjust bolt (M8 hex bolt)
-
Page 36: Refrigeration Parts
11-2-4. Door lock Nut for securing door lock cam 1) Open the door. 2) Remove the nut and washer securing the Door Lock door lock cam. 3) Loosen the nut securing the lock and remove it from the bracket. Bracket 4) The door lock is delivered with the plate. - Page 37 11-3-3. Compressor terminal [a] HDF-140A-SEA 1) Remove the side panel. (See 11-1-1. Side panel.) 2) Remove the waterproof tape. Waterproof tape 3) Remove the terminal cover from the compressor. Use a flathead screwdriver on the clip, and move it to the left to remove the terminal cover.
-
Page 38: Control Box
[b] HDF-300/400A-SEA 1) Remove the side panel. (See 11-1-1. Side panel.) 2) Remove the waterproof tape. 3) Remove the terminal cover from the compressor. The terminal cover is secured by upper and lower clips. Insert a flathead screwdriver into the tool slot on the lower side to release the Clip clips. -
Page 39: Control Box (B) (Hdf-300A/400A-Sea Only)
11-4-3. Fuse 1) Remove the front panel. (See 11-1-2. Front panel.) Tool slot 2) Insert a flathead screwdriver into the tool * Slot size: 1.8 x 6 slot and turn it counterclockwise. 11-4-4. Rocker switch Clips Hold the clips on the top and bottom, and push the rocker switch in the direction of the arrow. -
Page 40: Thermistor
11-6. Thermistor 11-6-1. Cabinet thermistor Cabinet Thermistor 1) Remove caulk in the thermistor through-hole from inside and outside the cabinet. 2) Pull the thermistor out of the cabinet. 3) After the replacement, caulk the through- hole from inside and outside the cabinet to prevent any gaps. -
Page 41: Warranty For Refrigeration Circuit
12. WARRANTY FOR REFRIGERATION CIRCUIT This freezer uses a mixed natural refrigerant. Repair of the refrigeration circuit at the installation site is not allowed. If a defect in the refrigeration circuit is confirmed after a diagnosis, follow the instruction below: Regardless of distribution channels, the unit should be replaced if a “defect in the refrigeration circuit(*)”...
Need help?
Do you have a question about the HDF-140A-SEA and is the answer not in the manual?
Questions and answers