PARTS & SERVICE MANUAL
Contents
1. Q mn o o p o Io eH Ceramic Wire Nut Bushing 10 e A 12 Insta Therm Service Manual HEATER INSTALLATION INSTRUCTIONS CONT D STEP 6 CONNECTING RIGHT SIDE HEATER WIRES Connect the four 4 heater wires on the right side to the terminal block as shown Heater wire 1 and 2 connected to terminal block position 3 heater wire 3 to terminal block position 2 and heater wire 4 to terminal block position 1 Terminal Block STEP 7 REINSTALLATION OF SIDE COVERS Reconnect the fan power cord if disconnected and reinstall the side covers with the previously removed screws Insta Therm Service Manual 13 14 This page intentionally blank Insta Therm Service Manual Insta Therm Service Manual This page intentionally left blank 15 OWOC SERVICE PARTS2. PARIS amp SERVICE MANUAL Insta m 16000 Series P N L340136 REV 8 2 10 Merco LIC 1111 North Hadley Road Fort Wayne Indiana 46804 Telephone 260 459 8200 Fax 888 790 8193 Technical Support 800 678 9511 mercosavory com UNIT SPECIFICATIONS Unit amp Volts Amps Phase CodPlg 208 zo 6 NEMA 6 20P 47 lbs 21 3 kg 16005 208 11 25 2340 6 6 20 47 lbs 21 3 kg 50 Stand by Energy Saving Mode CE Approved Unit 23 767 16000 2 Insta Therm Service Manual MODEL 16001 852000002 281 E E i Nm pa 81 6 2192 SI n 21 TAA 195 96 l 42018 181 D NMOQ 1002 1VISONN3Hl el 1 H9IH LVISONS3HL Il Ei 9431V3H 1171 01105 AV13N 125 9 2 1445 HOLIMS 25 YIMOd NIVW HOLIMS IS ig I 83404 AV13M IY 9811002 IW gOLVOIQNI SIH9IT1 21 11 431V3H 1N3N313 Insta Therm Service Manual MODEL 16003 16005 SCHEMATIC 019100002 AINO 50091700091 SLINN 32 NON oo 2 5 X18 96 annoys G2 5 ovo 8 02 1 96 02 n 113 Nag 43018 IYNIWYJL 281 181 NMOQ 1009 1V1SONU3
3. AA STEP 2 HEATER SUPPORT BRACKET REMOVAL Remove the two screws holding the right heater support bracket in place and remove the bracket Retain the screws for later reinstallation Leave the right hand side heater support bracket in place Right Heater Support Bracket 10 Insta Therm Service Manual HEATER INSTALLATION INSTRUCTIONS CONT D STEP 3 INSTALLING HEATER ELEMENTS CAUTION WHILE HANDLING TUBES r DO NOT TOUCH QUARTZ HEAT TUBES WITH BARE HANDS USE GLOVES Slide the heater elements quartz tubes through the holes in the right hand wall of the unit feeding the lead wires through the hole in the left hand wall and heater support bracket The small diameter of the ceramic end caps on the element should fit snuggly into the holes in the support bracket Heater Elements Shown Installed Heater Element Insta Therm Service Manual 11 HEATER INSTALLATION INSTRUCTIONS CONT D STEP 4 REINSTALLATION OF HEATER SUPPORT BRACKET Reposition the right side heater support bracket over the ends of the heater element feeding the lead wires through the holes Secure using the screws previously removed Right Side Heater Support Bracket STEP 5 CONNECT THE LEFT SIDE HEATER WIRES Connect all four 4 heater wires on the left side to the single black wire coming through the bushing toward the bottom of the unit using the ceramic wire nut provided Heater Wires
4. button will not reset replace hi limit Hi limit opens at 60C On Off Switch Check continuity between switch terminals Replace switch as needed No Stand By Heat Contactor Check for supply voltage to contactor contacts if no voltage present trace back to on off switch If voltage is present check to insure contacts are closing replace as needed Solid State Relay Check for supply voltage to relay contact if no voltage Current limiting present trace back to contactor Check for output voltage if no output voltage check percentage dial on relay is set to 50 If no output voltage present replace as needed Elements Check the amp draw on each element for proper load Check specification plate for rating information Check individual elements for opens shorts and proper resistance 56ohms No Full Power Micro Switch Check continuity of the NC held open switch with sufficient weight on surface if no continuity replace switch oolid State Relay Check for supply voltage to relay coil this will be Current limiting indicated by two lamps on the unit if no voltage present trace back to contactor and or the micro switch Check for output voltage if no output voltage check percentage dial on relay is set to 50 If voltage is present at coil check contacts are closing replace as needed Elements Check the amp draw on each power leg for proper load Check specification plate for rating information Check individual el
5. HIl 21 AINO 0091 SLINA 32 LINII H9IH LYLSONYJHL 11 ine eee 1045 HOLIMS ZS 21 43004 NIVW HOLIMS IS T 43MOd NIVW AV13H 18 16 9 15 1002 NY4 IN 15 YOLVIIGNI 51 911 21711 o gt PA zm p AINO 00091 831V3H 1N3H313 52 1 13 CH 1H T AINO SLINA 32 3431113 IW3 113 Insta Therm Service Manual SEQUENCE OF OPERATION POWER SUPPLY HEATING CIRCUIT Insta Therm Service Manual Electrical power is supplied to the unit by a 3 conductor service for single phase Black conductor is hot White conductor is neutral Green and Yellow conductor is ground Power is permanently supplied to the power switch through the high limit thermostat Also to the open contacts of the main power relay Closing the main power switch feeds power to the cooling fan and the coil of the main power relay Its contacts now close supplying 50 power to the 4 heaters through the current limiting solid state relay When product is placed on the shelf the normally open contact S2 closes to supply full power through the current limiting solid state relay and two indicator lamps to the heaters TROUBLESHOOTING Unit will not turn on Incoming Power Supply Check breakers reset if required Check power plug to be sure it s firmly in receptacle Measure incoming power 208v Hi Limit Thermostat Terminals are normally closed if open push in reset button If
6. ements for opens shorts and proper resistance 56ohms Hi Limit Trips Cooling Fan Motor Check to see cooling fan is operational if not check for voltage to motor if no voltage present trace back to on off switch if voltage is present replace motor 6 Insta Therm Service Manual This page intentionally blank Insta Therm Service Manual PARTS BREAKDOWN 8 3400 D 340180 Cordset 240V 20 w sleeve amp sp 34006 Sold State Relay 307 TemmaBokX L1 nse Switch Rocker Lighted _ M 1005 weca S Not Shown Insta Therm Service Manual EXPLODED VIEW ILLUSTRATION 15000 D Insta Therm Service Manual HEATER INSTALLATION INSTRUCTIONS DANGER Disconnect power supply before servicing or cleaning this toaster Safeguard power so it cannot be accidentally restored Failure do so could result in serious injury quartz tube may result in premature failure of the element Gloves or some other Heater elements must not be handled with bare hands Oil or grease residue on the CAUTION means of protecting the elements must be used during handling STEP 1 COVER REMOVAL Remove the screws holding each of the side covers in place slide the covers to the rear approximately 1 and pull them off Retain the screws for reinstallation The fan power cable may also be disconnected from the fan if needed AN
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