OWNER S MANUAL FORM: OM-874D 093 324 MIC-4 Interface Control 2011 01 1. Safety Symbol Definitions DANGER! Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text. Indicates a hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text. Wear safety glasses with side shields. Arc rays can burn eyes and skin wear a welding helmet with correct filter, and cover exposed skin with nonflammable clothing. NOTICE Indicates statements not related to personal injury. Indicates special instructions. eware of electric shock from welding electrode or wiring. Touching the electrode while in contact with the work or ground can cause electric shock. Always wear dry gloves. Keep all panels and covers closed. Welding sparks can cause fire or explosion. Move flammables away. Do not weld on closed tanks or barrels they can explode. Clean tanks or barrels properly. reathing welding fumes and gases can harm your health. Welding requires good ventilation. If ventilation is impossible, such as when welding in a confined space, use an air-supplied respirator. CALIFORNIA PROPOSITION 65 WARNINGS Welding or cutting equipment produces fumes or gases which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health & Safety Code Section 25249.5 et seq.) This product contains chemicals, including lead, known to the state of California to cause cancer, birth defects, or other reproductive harm. Wash hands after use. 2. Specifications and Location This unit is an interface control designed for use with a DIALARC HF welding power source. This interface control provides a connection point for a remote contactor and amperage control device (not supplied) such as an FTC-23, RFCS-23, or equivalent. The necessary interconnecting cords are supplied with this unit to connect it to the welding power source. This control is equipped with two 6 ft. (1.8 m) cords for making connections to the welding power source control circuitry. Lead lengths must be considered when locating the control. The control can be placed on top of the welding power source or at a nearby location. The service life and efficiency of the control are reduced when it is subjected to high levels of dust, dirt, moisture, corrosive vapors, and extreme heat. C A C 7-1/2 in. (191 mm) 9-1/2 in. (241 mm) 8-3/4 in. (222 mm) A Weight: 7.5 lbs (3.4 kg) ST-086 923-C 2011 MILLER Electric Mfg. Co.
3. Connections 2 3 1 1 Amperage Control Plug Route and connect 3-prong plug from control to welding power source Remote Amperage Receptacle. 2 Contactor Control Plug Route and connect 2-prong plug from control to welding power source Remote Contactor Receptacle. 3 Remote Control Receptacle The remote control device is not supplied with this unit. Obtain the desired control (an FTC-23, RFCS-23, or equivalent), and route and connect plug to this receptacle. See instructions supplied with the remote device for proper operation. Using the supplied adapter cord: Allows remote controls with 14-pin plugs to connect to the 5-pin remote receptacle on MIC-4. For proper operation of this control and the remote control device, rotate the Amperage Adjustment Control on the welding power source to the 100 (maximum) position. ST-086 923-C 4. Routine Maintenance! Turn Off all power before maintaining. Disconnect unit from power source before repairing or replacing cords. 3 Months Cord(s) Replace Cracked Parts Replace Unreadable Labels 5. Troubleshooting Trouble Remedy No remote amperage control. Set switches and controls on welding power source to proper positions.* Check weld output on welding power source. Secure cord connections or replace cords, if necessary. No remote output (contactor) control. Remote Hand Control switch in wrong position, control not so equipped, or poor connections. Check switch settings, cord connections, and weld output on welding power source. Secure cord connections or replace cords, if necessary. *See welding power source Owner s Manual. OM-874 Page 2
6. Circuit Diagrams and Wiring Diagram PLG50 WHT Z A SIL LK X GRN RC51503 A 501 E 506 504 C CR 502 50 A F D C 505 D PLG51 LK WHT 4 CR50 7 E 171 996-A 187 974 OM-874 Page 3
OM-874 Page 4 107 681-
7. Parts List 3 5 6 2 4 1 7 14 8 9 10 13 12 11 ST-086 922- Item No. Dia. Mkgs. Part No. Description Quantity.. 1... RC51... 035 523.. CONNECTOR, circ 5skt 16S rcpt Amphenol MS-3102A-16S-8S... 1.. 2... PC1... 085 617.. CIRCUIT CARD, interface control... 1.. 3... 073 756.. STAND-OFF, No. 6-32 x.625 lg.250 hex female... 4.. 4... 086 000.. CASE SECTION, base/front/rear... 1.. 5... +021 475.. WRAPPER... 1.. 6... 019 677.. HANDLE... 1.. 7... 134 327.. LAEL, warning general precautionary... 1.. 8... CR50... 052 964.. RELAY, encl 24VDC DPDT... 1.. 9... 139 041.. USHING, strain relief... 1. 10... 600 737.. CALE, port No. 16 3/c (order by ft)... 6ft. 11... 170 593.. PLUG, twlk 3P3W 20A 125V... 1. 12... 039 618.. PLUG, twlk 2P2W 20A 250V... 1. 13... 604 988.. CALE, port No. 16 2/c (order by ft)... 6ft. 14... 130 003.. CALE, adapter (consisting of)... 1... 039 273... CONNECTOR, circ 5pin 16S plug Amphenol MS-3106A-16S-8P... 1... 039 685... CONNECTOR, circ clamp str rlf sz 16 Amphenol 97-3057-8... 1... 151 146... CALE, shld No. 22ga 5/c (order by ft)... 2ft... 152 568... CONNECTOR & SOCKETS,... 1... 143 922... CONNECTOR, circ clamp str rlf sz 17-20 Amp 206070-3... 1 +When ordering a component originally displaying a precautionary label, the label should also be ordered. To maintain the factory original performance of your equipment, use only Manufacturer s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor. OM-874 Page 5
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