Microcook HD Microcook TA S E RV I C E M A N U A L Part No. 32Z3385 Issue No.
Table of Contents Safety Code...........................................................................3 Microcook HD Specification Sheet ........................................4 Microcook TA Specification Sheet…………….............. …….5 Installation Instructions ..........................................................6 Error Codes & Diagnostics ....................................................7 Power Output Test Procedure A............................................8 Simplified Power Output Test B...
SAFETY CODE This manual is designed to assist engineers who have successfully completed a Merrychef Service training course. It has been prepared to offer technical guidance for the Merrychef Microcook HD and Microcook TA Commercial Microwave Ovens. Please remember that it is wiser not to attempt a service task if you are unsure of being able to complete it competently, quickly, and above all safely.
Product specifications: Microcook HD Series Microcook HD1025, HD1425, HD1725, HD1925 & HD2025 Model Number: Model prefix + Type + Voltage + Frequency + UK/Export + Customer For example: 1925C450UK Model 1925, Microcook, 230-240V, 50Hz, UK model Model prefix Type Voltage Frequency 1025 1425 1725 1925 2025 C= Cook V=Vend 2= 220-230V a.c. 4= 230-240V a.
Product specifications: Microcook TA Series Microcook TA1725 & TA1925 Model Number: Model prefix + Turbo + Voltage + Frequency + Type Model prefix Turbo Voltage Frequency Type TA1725 TA1925 MT = Manual Turbo VT = Vend Turbo 2= 220-230V a.c. 4= 230-240V a.c 5 = 50 Hz 6 = 60 Hz UK = UK model EX = Export model EE = Twin 13amp Lead EX = Single 30 amp Lead Power Requirements TA1725 TA1925 Power Output TA1725 Microwave 100% Hot Air Combination TA1925 Microwave 100% Hot Air Combination 3.12kW 5.
Installation instructions Power Supply Requirements The Microcook HD & Microcook TA ovens should be connected to a suitable electricity supply, which can cope with the switching-on surge that occurs with certain types of catering equipment, such as microwaves. Because of this requirement, we strongly recommend that a separate, suitably rated supply is installed for the oven. The supply for the oven should be fitted with a Type "C" circuit breaker, rated at 16A.
Error codes and diagnostics The Microcook will identify some of the most common problems by flashing an error message code in the time display window. These are the error messages, and suggestions for repairing them: All HD & TA Models Display 1 Fault (frequency) Recommended Action Door not fully closed (permanent) Check the door is fully closed. Check the door down LED is illuminated on the control board. Check ribbon connector condition and fit.
Procedure A - Power Output Test in accordance with BS EN 60335-2-90 Annex AA This test is given in the BSI test standard for microwave ovens. It is reproduced below - not so that you can follow it, but to show you why it is impractical in normal conditions. A simplified procedure, which gives a good approximation to the BSI power output, is given in Procedure B which follows. Note: This test can only be carried out on a COLD oven.
Procedure B - Simplified Power Output Test You will need: A thermometer capable of reading to ±0.1°C. A Polypropylene tray approximately 200mm x 200mm. A measuring jug. A calculator. Water which is at a temperature of 10°C ± 2°C. 1 2 3 4 5 6 7 8 Measure 1 litre of cold water into the tray using the measuring jug. Measure the water temperature, and record it as T[s]. Place the tray on the turntable in the oven and close the door. Turn the oven on. Set the timer to 1:02. Press the “100%” power pad.
Procedure D - High Voltage Capacitor Test You will need: A Digital Multi-meter (D.M.M.) A Megger or similar resistance meter using 500V d.c. WARNING: High voltages and large currents are present at the High Voltage Capacitor. It is very dangerous to work near this part when the oven is on. NEVER make any voltage measurements at the High Voltage circuits, including the magnetron filament .
Door interlock operation The door on the Microcook oven is monitored by three microswitches used in the conventional “Primary, Secondary and Monitor” switch arrangement shown below. Primary L Secondary Power Out Power In N Door Interlock Arrangement Monitor The switches operate as follows: 1. Monitor Switch [TopRight]. As the door is closed, the monitor switch is opened. 2. Primary Interlock Switch [ Bottom Left ]. The Primary switch is then closed. 3. Secondary Interlock Switch [ Bottom Right ].
Main features a c d e f g microcook C e turboaire ll C Vend model (KFC) Description of Features a. Program Pad b. On/Off Switch c. Program Display d. Program Selection / Time Set Pads e. Power Selection Pads HD models:100%, 50% & de-frost TA models:100%, hot-air & turbo f. Time Display g. Cancel / Callback Pad h.
Rear cover assembly HD1025 only Rear View 5 1 All other models Inner View Outer View 2 1 3 5 7 6 No Description HD1025 HD1425 HD1725 HD1925 HD2025 1 2 3 4a 4b 5 6 7 40M0883 —– —– 31Z3022 31Z5012 31Z2071 —– 31Z2056 Rear Cover Push Fit Feet Air filter Screw M5x16 M5 Star Washer Installation Label Self Adhesive Foam Tape Service History Label Microcook HD Ovens 32Z3385 Issue 5 11M0269 31Z1187 31Z1104 31Z3022 31Z5012 31Z2071 31Z0158 31Z2056 11M0269 31Z1187 31Z1104 31Z3022 31Z5012 31Z2071 31Z0158
Die–cast door ( 500mm ) assembly 11M0302 14 15 13 9 11 23 18 13 17 19 12 24 22 16 21 20 Note: Parts 18 & 19 choke filler are now one piece Except on HD2025 model No Description HD1025 HD1425 HD1725 HD1925 HD2025 8* 9* 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 11M0302 40M0923 30Z0477 40M0919 40M0920 31Z4013 31Z3022 40M0839 40M0841 40M0840 Door Assembly Door Screen Blue Double Sided Tape Doorside L/H Doorside R/H Fixing Nut (M5) Fixing Bolt (M5 x 16) Door Main Body Door Mesh Door Choke
Door ( 650mm ) assembly 11M0258 16 35 13 15 13 35 33 11 26 29 22 9 19 23 32 16 30 12 31 25 27 37 36 33 26 No Description HD1025 HD1425 HD1725 HD1925 HD2025 9 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 35 36 37 40M0923 40M0919 40M0920 31Z4013 31Z3022 40M0839 40M0841 40M0840 Door Screen Blue Doorside L/H Doorside R/H Fixing Nut (M5) Fixing Bolt (M5 x 16) Door Main Body Door Mesh Door Choke Choke Filler Horizontal Choke Filler Vertical Inner Door Glass Silicone
Control panel assembly ( For KFC models see Appendix 1 ) See Appendix 6 for Logic Board connections and jumper details 44 40 39 38 43 42 41 No Description All Models 40 Electrostatic Screen 40M0464 41 Ribbon Connector (10 Way) 11M0117 42 Filtered Wire Assembly 11M0333 43 M4 Nylon Face Nut 31Z4014 44 M3 x 12 Hex Head 31Z3117 No.
Component layout: HD1025 56 59 62 65 58 67 73 66 68a 68b 70 69 63 64 54 61 51 52 53 48 52 49 55 No Description HD1025 HD1425 HD1725 HD1925 HD2025 TA 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 10M0026 11M0285 —– 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40H0046 10M0102 11M0427 —– 31Z7010 11M0354 30Z0992 20Z0787 40M0614 40M0600 10M0106 11M0430 11M0261 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40M0889 31Z0167 40M0973 30Z0270 30Z0257 31Z01
Component layout: HD1425 & HD1725 62 65 70 59 60 61 65 73 71 68a 68b 74 68c 67 56 63 69 66 58 54 57 52 52 55 53 48 49 51 No Description HD1025 HD1425 HD1725 HD1925 HD2025 TA 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 10M0026 11M0285 —– 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40H0046 10M0102 11M0427 —– 31Z7010 11M0354 30Z0992 20Z0787 40M0614 40M0600 10M0106 11M0430 11M0261 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40M0889 31Z0167 40M097
Component layout: HD1925 (For KFC see Appendix 1 ) 71 62 59 60 70 61 73 68a 65 68b 68c 74 56 67 65 63 69 66 58 54 57 53 52 52 55 48 51 49 No Description HD1025 HD1425 HD1725 HD1925 HD2025 TA 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 10M0026 11M0285 —– 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40H0046 10M0102 11M0427 —– 31Z7010 11M0354 30Z0992 20Z0787 40M0614 40M0600 10M0106 11M0430 11M0261 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40M0
Component layout: HD2025 66 62 59 70 60 61 58 71 57 67 56 63 74 68a 69 68b 68c 65 54 52 48 55 53 49 51 52 No Description HD1025 HD1425 HD1725 HD1925 HD2025 TA 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 10M0026 11M0285 —– 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40H0046 10M0102 11M0427 —– 31Z7010 11M0354 30Z0992 20Z0787 40M0614 40M0600 10M0106 11M0430 11M0261 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40M0889 31Z0167 40M0973 30Z0270 30Z0
Component layout: TA1725 & TA1925 70 61 73 71 56 68a 74 68b 68c 65 62 58 57 63 49 54 52 55 53 50 51 52 No Description HD1025 HD1425 HD1725 HD1925 HD2025 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 10M0026 11M0285 —– 31Z7010 11M0353 30Z0992 20Z0787 40M0614 40H0046 10M0102 10M0106 11M0427 11M0430 —– 11M0261 31Z7010 31Z7010 11M0354 11M0353 30Z0992 30Z0992 20Z0787 20Z0787 40M0614 40M0614 40M0600 40M0889* Cavity Relay Board Fan Control Pcb PCB
Cavity components 81 80 82 80 79 77 No Description HD1025 HD1425 HD1725 HD1925 HD2025 77 78 79 80 81 82 20Z1355 31Z0098 40M0563 11M0140 40M0832 40M0508 Ceramic Base White Silastic Roof Stirrer Blade Assembly Box Launch Seal Tuning Stub Microcook HD Ovens 32Z3385 Issue 5 20Z1355 31Z0098 40M0563 11M0140 40M0832 40M0508 20Z1355 31Z0098 40M0563 11M0140 40M0832 40M0508 20Z1355 31Z0098 40M0563 11M0140 40M0832 40M0508 40M0853 31Z0098 40M0563 11M0140 40M0832 40M0539 TA 20Z1355 31Z0098 40M0877 11M0140 4
Door opening mechanism: Right side HD1025 & HD1925 KFC models are fitted with Manual Doors and do not have the Pop-up door solenoid assembly.
Door opening mechanism: Left side HD1025 & HD1925 KFC models are fitted with Manual Doors and do not have the Pop-up door solenoid assembly.
TA 1725 and TA 1925: Turboaire hot air motor assembly 83 79 84 No Description HD1025 HD1425 HD1725 HD1925 HD2025 77 78 79 80 82 83 84 20Z1355 20Z1355 20Z1355 20Z1355 31Z0098 31Z0098 31Z0098 31Z0098 40M0563 40M0563 40M0563 40M0563 11M0140 11M0140 11M0140 11M0140 40M0508 40M0508 40M0508 40M0508 —– —– —– —– —– —– —– —– Ceramic Base White Silastic Roof Stirrer Blade Assembly Tuning Stub Hot Air Motor Assembly Cooling Sleeve Microcook HD Ovens 32Z3385 Issue 5 40M0853 31Z0098 40M0563 11M0140 40M0539 —–
TA 1725 and TA 1925 Fan control PCB – part no. 11M0261 This board provides a full temperature-control system for the Turboaire Hot Air Fan, this will need to be set up in accordance with the following procedure once replaced. It also monitors the Fan Motor performance, and sends a signal to the logic PCB Assembly to indicate that it is functioning correctly. The status of the various functions are indicated by the monitor LEDs.
TA 1725 and TA 1925: PCB board operation during oven use The operation of this PCB is best tested when the oven is in operation. You will need to have a pen and paper to hand in order to set up the Nozzle temperature. (see Adjusting the nozzle temperature below for further details).
Input wiring details U U Blue Blue L2 N 73 68A 68B 68C Green / Yellow Brown 101 102 102 Model HD1025 Model HD2025 No Description HD1025 HD1425 HD1725 HD1925 HD2025 68a 68b 68c 73 101 102 30Z0231 30Z0168 20Z1080 30Z0997 89W6010 31Z7052 Fuse Holder Fuse Fuse Cover Mains Filter Sleeve Clip Microcook HD Ovens 32Z3385 Issue 5 30Z0231 30Z0168 20Z1080 30Z0997 89W6010 31Z7052 30Z0231 30Z0168 20Z1080 30Z0997 89W6010 31Z7052 30Z0231 30Z0168 20Z1080 30Z0997 89W6010 31Z7052 TA 30Z0231 30Z0231 30Z
Part number identification chart: No Description HD1025 HD1425 HD1725 HD1925 HD2025 1 2 3 4a 4b 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 40M0883 —– —– 31Z3022 31Z5012 31Z2071 —– 31Z2056 11M0302 40M0923 30Z0477 40M0919 40M0920 31Z4013 31Z3022 40M0839 40M0841 40M0840 Rear Cover Push Fit Feet Air filter Screw M5x16 M5 Star Washer Installation Label Self Adhesive Foam Tape Service History Label Door As
Part number identification chart: No Description HD1025 HD1425 HD1725 HD1925 HD2025 59 60 61 62 63 64 65 66 67 68a 68b 68c 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 31Z0167 —– 30Z0921 25Z1016 30Z0264 40M0884 11M0343 31Z0126 40M0509 30Z0231 30Z0168 20Z1080 30Z1011 30Z0283 —– —– 30Z0997 40M0492 31Z0280 30Z0382 20Z1355 31Z0098 40M0563 11M0140 40M0832 40M0508 —– —– 20Z0310 20Z0309 31Z3013 31Z5012 30Z0284 30Z0010 20Z0710 —– —– —– 30Z0240 30Z0356 3
Circuit diagram: Microcook HD 1025, HD1425, HD1725, HD1925, HD2025 Microcook HD Ovens 32Z3385 Issue 5 Page 31
Circuit diagram: Turboaire II XE (Single leaded) Part 1 Microcook HD Ovens 32Z3385 Issue 5 Page 32
Circuit Diagram: Turboaire II XE (Single leaded) Part 2 Microcook HD Ovens 32Z3385 Issue 5 Page 33
Circuit Diagram: Turboaire II XE (Twin leaded) Part 1 Microcook HD Ovens 32Z3385 Issue 5 Page 34
Circuit Diagram: Turboaire II XE (Twin leaded) Part 2 Microcook HD Ovens 32Z3385 Issue 5 Page 35
APPENDIX 1: KFC models As Microcook HD1925 except the following parts: No Description 8 38 39 49 103 104 105 106 KFC Door Assembly Door Pocket (For Menu Card) Switch Panel Assy Logic Board Relay Board ( 2 Buzzers ) Menukey Assembly Top Panel Extrusion MenuKey connection lead Diode PCB 11M0393 40M1060 11M0394 11M0416 11M0285 10C0148 40M1062 11H0064 11M0364 See Appendix 6 for Logic Board connections and jumper details 40 39 38 Top View 103 104 49 Microcook HD Ovens 32Z3385 Issue 5 Page 36
APPENDIX 2: Capacitors and Magnetrons Microcook HD & TA Models: PANASONIC MAGNETRON 30Z1171 Oven Model Capacitor LH HD 1025 HD 1425 Capacitor RH 1.1µF 30Z1242 ( 1 only) 0.88µF 30Z1330 0.75µF 30Z1329 HD 1725 2x 1.0µF 30Z1331 HD 1925 2x 1.1µF 30Z1242 HD 2025 2x 1.1µF 30Z1242 TA 1725 2x 1.0µF 30Z1331 TA 1925 2x 1.1µF 30Z1242 SANYO MAGNETRON Oven Model Capacitor LH HD 1025 HD 1425 Capacitor RH 1.25µF 30Z1078 ( 1 only) 0.88µF 30Z1330 1.0µF 30Z1331 HD 1725 2x 1.1µF 30Z1242 HD 1925 2x 1.
APPENDIX 3: Cleaning procedure For the oven to operate at peak efficiency, the cavity, door and the air filters must be kept clean. A daily cleaning routine will ensure that you comply with the required hygiene standards and will help to maintain and prolong the efficiency of your oven. Follow the SAFETY INSTRUCTIONS at the beginning of this manual. • ALWAYS switch off at the electrical supply.
APPENDIX 4: MenuKey download procedure The MenuKey™ System automatically changes all the cooking programs on the numbered icon pads with the turn of a key. To change the menus on the oven: 1 Ensure the power switch is off. 2 Lift the MenuKey cover in the front panel of the oven and put the key in the keyhole Turn the key clockwise to the stop ( ¼ turn ). Do not remove the key at this stage. 3 Switch the power switch on.
APPENDIX 5: Fitting 30Z1177 20A Anti surge fuse PROCEDURE FOR REPLACING 13A ANTI-SURGE FUSES WITH 30Z1177 FLM020 Type Brief description: The change in fuse is due to the manufacturer ceasing to make the 13A anti-surge fuses Pt. No. 30Z0168 which are unique to our requirements. To overcome this we need to use the FLM020 fuses Pt. No. 30Z1177 for the Microwave circuit on all Microcook HD1725 & HD1925 ovens. The operation listed below is to be followed to any service calls where the 13A A/S fuses have blown.
5. Remove the blue fuse cover and the 13A fuse, then remove the 10A fuse and place in the 13A fuse location. (C) 6. Remove the (BROWN) mains wire and the filter wire L2 from the 13A fuse holder. (D) 7. Move the wires from the 10A fuse holder and fit them to the 13A fuse holder. (E) C E D 8. Fit new (10AMP LABEL) Pt. No. 31Z2030 over the old 13AMP label. Remove the old 10AMP label and fit the new (20AMP LABEL) Pt. No. 31Z2092 into position so it will be visible when new fuse holder is fitted.
APPENDIX 6 : Logic Board & Magnetron Failure Detect 11M0416 KFC optic Logic PCB with Magnetron Failure Detect in the event of failure the system will automatically compensate and double the remaining cook times thus ensuring that the program achieves its target temperature in the food product. At the end of the cooking cycle the system will display either “E4” = left hand magnetron failure or “E5”= right hand Magnetron failure. In the event that both Magnetrons fail the system will report an “EA” error.
Manual corrections and modifications Whilst every effort has been made to ensure that the information contained in this manual is accurate and complete, if you believe that an error has been made, or if you have any suggestions for how the manual could be improved, please fill in and return this form. A review of any forms returned will be made on a regular basis, and the manual will be updated if required.
