Hoshizaki HNC-120BA-L-S, Service Manual

Page 1: ...NO S041 789 ISSUED OCT 26 2009 REVISED HOSHIZAKI COUNTER SHOWCASE SERVICE MANUAL MODEL HNC 120BA L R S HNC 150BA L R S HNC 180BA L R S HNC 210BA L R S...

Page 2: ...ce of the product Should the reader have any questions or concerns which have not been satisfactorily addressed please call write or send an e mail message to the Hoshizaki Technical Support Departmen...

Page 3: ...r reference that may be necessary CONTENTS PAGE 1 SAFETY INSTRUCTIONS 1 2 MODEL NAME 3 3 OPERATING INSTRUCTIONS 4 4 SPECIFICATIONS 5 5 DIMENSIONS 6 a HNC 120BA L S 6 b HNC 120BA R S 7 c HNC 150BA L S...

Page 4: ...11 CONSTANT PRESSURE EXPANSION VALVE AND REFRIGERANT CHARGE 20 a SPECIFICATIONS 20 b FUNCTION 20 c CONSTRUCTION 20 d REPLACEMENT 21 12 SERVICE DIAGNOSIS 22 ii...

Page 5: ...be sure to unplug the unit or disconnect the main power supply before servicing the unit to prevent electric shocks 3 If the unit must be energized for inspection of the electric circuit use rubber g...

Page 6: ...connectors or the like with their closed ends up to avoid entrance of moisture that could lead to electric leaks or re 6 After servicing always use a megohmmeter 500V DC to check for the insulation re...

Page 7: ...E H NC 120 B A L R S High Grade Exterior S Stainless steel Counter Showcase Unit Location Width cm L Unit on left 120 150 180 210 R Unit on right Development Order HA model Starts from A Unit on right...

Page 8: ...ay rise resulting in food deterioration 4 Do not pack the showcase with foods The cooling performance may reduce resulting in food deterioration 5 The showcase should not be exposed to direct sunlight...

Page 9: ...R D04763 L D04764 R D04765 L D04766 R D04767 L D04768 R D04769 REFRIGERATION SYSTEM DEFROST SYSTEM Convection Cooling None Hermetic 130W Model CE56Y 1ZU Fin and Tube Type Cooling Fan Motor x 1 UPPER...

Page 10: ...6 5 DIMENSIONS a HNC 120BA L S...

Page 11: ...7 b HNC 120BA R S...

Page 12: ...8 c HNC 150BA L S...

Page 13: ...9 d HNC 150BA R S...

Page 14: ...10 e HNC 180BA L S...

Page 15: ...11 f HNC 180BA R S...

Page 16: ...12 g HNC 210BA L S...

Page 17: ...13 h HNC 210BA R S...

Page 18: ...14 6 REFRIGERATION CIRCUIT Refrigerant R134a Heat Exchange Condenser Drier Expansion Valve Evaporator Upper Evaporator Lower Fan Motor Compressor...

Page 19: ...15 7 WIRING DIAGRAM CM Compressor SR Start Relay SC Start Capacitor OL Overload Relay FM Fan Motor ELB Ground Fault Circuit Interrupter Power Supply 1 phase 115V 60Hz BK W BK W BU...

Page 20: ...16 8 CONSTRUCTION Top Cover Nameplate Joint Hose Front Glass Plug Power Switch Ground Fault Interrupter Condenser Center Frame Air Filter Slider Louver Sliding Glass Door Food Mount...

Page 21: ...r is hooked and xed on the top frame aluminum 2 Lift up and unhook the rear end of the top cover 3 When the rear part is lifted off move it forward to unhook and remove the front part The top cover is...

Page 22: ...nd release it from the t f HOLDER EVAPORATOR PIPE Remove the truss head tapping screw 4 x 25 from the bottom of the top frame Take off the center frame Be careful with the evaporator pipe It will be r...

Page 23: ...the same handy ux that has been used for the current refrigerants However its entrance into the refrigerant circuit should be avoided as much as possible 4 Oil for Processing of Copper Tubing R134a Wh...

Page 24: ...re may cause R134a to suddenly react with oxygen and explode Be sure to use nitrogen to prevent explosion 11 CONSTANT PRESSURE EXPANSION VALVE AND REFRIGERANT CHARGE a SPECIFICATIONS Model HYP 2 5QHD...

Page 25: ...r every time the sealed refrigeration system is opened Do not replace the Drier until after all other repairs or replacement have been made 1 Recover the refrigerant R134a and store it in an approved...

Page 26: ...or air lter clogged 3 Clean 4 Condenser air inlet blocked 4 9 Instruct the user on characteristics and proper use of the showcase 5 Exposed to direct sunlight 6 Located next to a high heat producing...