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Miller Electric TM-353E - page 1
Processes TM-353E January 2001 Eff. w/Serial Number JJ339876 Description TIG (GT A W ) W elding Stick (SMA W) W elding Arc Welding Power Source Syncrowave 250 60 Hz, 50 Hz R Visit our website at www.MillerWelds.com ...
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Miller Electric TM-353E - page 2
T ABLE OF CONTENTS 1. Safety Precautions – Read Before Using 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Servicing Hazards 1 . . . . . . . . . . . ...
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Miller Electric TM-353E - page 3
dec_con1 10/95 Declaration of Conformity For European Community (CE) Products This information is provided for units with CE certification (see rating label on unit.) NOTE Manufacturer ’ s Name: Miller Electric Mfg. Co. Manufacturer ’ s Address: 1635 W . Spencer Street Appleton, WI 54914 USA Declares that the product: Syncrowave 250 conform ...
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Miller Electric TM-353E - page 4
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Miller Electric TM-353E - page 5
TM-353 Page 1 Syncrowave 250 SECTION 1 – SAFETY PRECAUTIONS FOR SER VICING safety_stm1 4/95 1-1. Symbol Usage Means W arning! W atch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. This group of symbols means W arning! W atch Out! possible ELECTRIC SHOCK, MOVING P A RTS, and HOT P A R ...
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Miller Electric TM-353E - page 6
TM-353 Page 2 Syncrowave 250 F ALLING EQUIPMENT can cause serious personal injury and equipment damage. 1. Use lifting eye to lift unit only , NOT running gear , gas cylinders, or any other accessories. 2. Use equipment of adequate capacity to lift unit. MAGNETIC FIELDS FROM HIGH CURRENTS can affect pacemaker operation. 1. Pacemaker wearers keep aw ...
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Miller Electric TM-353E - page 7
TM-353 Page 3 Syncrowave 250 SECTION 2 – DEFINITIONS 2-1. W arning Label Definitions S-176 254-A 1 1.1 1.2 1.3 3 3.1 3.2 3.3 4 4.1 + 2 2.1 2.2 + + 5 6 + 2.3 W arning! W atch Out! There are possible hazards as shown by the symbols. 1 Electric shock from welding electrode or wiring can kill. 1.1 W ear dry insulating gloves. Do not touch electrode w ...
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Miller Electric TM-353E - page 8
TM-353 Page 4 Syncrowave 250 2-2. Rating Label For CE Products S-178 813-A ISO/IEC 974-1 X 25% 60% 100% 7A/10.2V 310A/22.4V U 0 = 80V I 2 310A 200A 155A U 2 22.4V 18V 16.2V X 25% 60% 100% 5A/20.2V 310A/32.4V U 0 = 80V I 2 310A 200A 155A U 2 32.4V 28V 26.2V IP 21S U 1 = 220 I 1max = 1 17.2A I 1Eff = 59A 1 1 1 50 Hz U 1 = 380 I 1max = 72.2A I 1E ff = ...
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Miller Electric TM-353E - page 9
TM-353 Page 5 Syncrowave 250 2-3. Symbols And Definitions Some symbols are found only on CE products. NOTE A Amperes Panel – Local Gas Tungsten Arc W elding (GT AW) Shielded Metal Arc W elding (SMA W) V V olts Do Not Switch While W elding Arc Force (DIG) Spot T imer Output Circuit Breaker Remote T emperature Protective Earth (Ground) Alternating ...
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Miller Electric TM-353E - page 10
TM-353 Page 6 Syncrowave 250 SECTION 3 – INST ALLA TION 3-1. Specifications Amperes Input at AC Balanced Rated Load Output, 50/60 Hz, Single-Phase Rated W elding Output PFC** 200 V 230 V 460 V 575 V KV A KW Amp Range Max OCV IP Rating NEMA Class II (40) – 250 No PFC 106 (4.6*) 92 (4*) 46 (2*) 37 (1.6*) 21 (0.89*) 1 1.4 (0.68*) Amperes, 30 V olt ...
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Miller Electric TM-353E - page 11
TM-353 Page 7 Syncrowave 250 3-3. Duty Cycle And Overheating 4 Minutes W elding 6 Minutes Resting 6 Minutes W elding 4 Minutes Resting Duty Cycle is percentage of 10 mi n- utes that unit can weld at rated load without overheating. If unit overheats, thermostat opens, output stops, light goes on (CE models only), and cooling fan runs. Wait fifteen m ...
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Miller Electric TM-353E - page 12
TM-353 Page 8 Syncrowave 250 3-4. Selecting A Location 1 Lifting Eye 2 Lifting Forks Use lifting eye or lifting forks to move unit. If using lifting forks, extend forks beyond opposite side of unit. 3 Rating Label (Non CE Models Only) 4 Rating Label (CE Models Only , See Section 2-2) Use rating label to determine input power needs. CE label located ...
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Miller Electric TM-353E - page 13
TM-353 Page 9 Syncrowave 250 3-6. Tipping Y Be careful when placing or moving unit over uneven surfaces. 3-7. W eld Output T erminals And Selecting Cable Sizes Y ARC WELDING can cause Electromagnetic Interference. T o reduce possible interference, keep weld cables as short as possible, close together , and down low , such as on the floor . Locate w ...
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Miller Electric TM-353E - page 14
TM-353 Page 10 Syncrowave 250 3-8. Remote 14 Receptacle Socket* Socket Information A 24 volts ac. B Contact closure to A completes 24 volts ac contactor control circuit. C Command reference; 0 to +10 volts dc output to remote control. AJ B K I D Remote control circuit common. C L NH D M G F A E 0 to +10 volts dc input command signal from remote con ...
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Miller Electric TM-353E - page 15
TM-353 Page 1 1 Syncrowave 250 3-10. Electrical Service Guide All values calculated at 60% duty cycle. NOTE 60 Hertz Models Without Power Factor Correction With Power Factor Correction Input V oltage 200 230 460 575 200 230 460 575 Input Amperes At Rated Output 85 74 37 30 55 48 24 19 Max Recommended Standard Fuse Or Circuit Breaker Rating In Amper ...
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Miller Electric TM-353E - page 16
TM-353 Page 12 Syncrowave 250 1 3-1 1. Placing Jumper Links And Connecting Input Power ST-1 17 263-K Check input voltage available at site. 1 Jumper Link Label Check label inside your unit – only one label is on unit. Y Only make connections for th e voltages shown on the l a - bel inside your unit. Do not make connections for any other voltages. ...
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Miller Electric TM-353E - page 17
TM-353 Page 13 Syncrowave 250 SECTION 4 – OPERA TION 4-1. Controls Ref. ST-1 17 264-F / Ref. ST-154 795-C 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 Ammeter See Section 4-3. 2 V oltmeter See Section 4-3. 3 High Frequency Switch See Section 4-1 1. 4 Output (Contactor) Switch See Section 4-8. 5 Spot Time Switch And Control (Optional) See Section 4-5. 6 ...
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Miller Electric TM-353E - page 18
TM-353 Page 14 Syncrowave 250 4-2. Output Selector Switch Ref. ST-181 675-A 1 Output Selector Switch Y Do not use AC output in damp areas, if movement is confined, or if there is dan- ger of falling. Use AC output ONL Y if required for the welding process, and then use a remote control. Y Do not change position of switch while welding or while unde ...
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Miller Electric TM-353E - page 19
TM-353 Page 15 Syncrowave 250 4-4. Crater Time Controls 1 Crater T ime Control Us e control to reduce current over a set period of time (0 – 15 seconds) at the end of the weld cycle when NOT using a remote current control. 2 Crater Time Switch ON – provides crater time. OFF – provides no crater time. Place switch in the OFF position for Shiel ...
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Miller Electric TM-353E - page 20
TM-353 Page 16 Syncrowave 250 4-6. AC Balance Control Ref. S-0795-A 1 AC Balance Control Balance Control (AC GT A W): Control changes the AC output square wave. Rotating the control towards 10 provides deeper pene- tration. Rotating the control towards 0 provides more cleaning action of the workpiece. When the control is in the Balanced position, t ...
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Miller Electric TM-353E - page 21
TM-353 Page 17 Syncrowave 250 4-7. Amperage Adjustment Controls 1 Amperage Adjustment Control Use control to adjust amperage, and preset amperage on ammeter (see S e c t i o n 4 - 3 ) . T h i s c o n t r o l m a y be adjusted while welding. For remote amperage control , front panel control setting is the maximum amperage available. For example: If ...
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Miller Electric TM-353E - page 22
TM-353 Page 18 Syncrowave 250 4-9. Arc Controls 1 Arc Control (Dig) For AC And DC SMA W W elding When set at 0, short-circuit amper- age at low arc voltage is the same as normal welding amperage. When setting is increased, short- circuit amperage at low arc voltage increases. Set at 0 for GT AW welding. 2 Arc Control Switch Place switch in the ON p ...
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Miller Electric TM-353E - page 23
TM-353 Page 19 Syncrowave 250 4-1 1. High Frequency Controls Y Place High Frequency switch in Off position before using the shielded metal arc welding (SMA W) process. 1 High Frequency Switch ST ART – (Up position) provides HF for arc starting only . High frequency turns o n t o help start arc when out- put is enabled. High frequency turns off wh ...
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Miller Electric TM-353E - page 24
TM-353 Page 20 Syncrowave 250 1 Input T erminal Board TE1 Provides means for operation on dif ferent input voltages. 2 Power Switch S1 Provide on/off control of unit. 3 Fan Motor FM Provides cooling of internal compo- nents. 4 Main Transformer T1 Supplies power to weld output cir- cuit, various control circuits, main control board PC1, and fan moto ...
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Miller Electric TM-353E - page 25
TM-353 Page 21 Syncrowave 250 15 1 15 V olts AC Duplex Recep- tacle RC2 Provides connection point for auxil- iary equipment. 16 Postflow Timer TD1 Controls shielding gas and coolant postflow time. 17 Gas V alve GS1 Provides shielding gas during the weld cycle. 18 Preflow Timer TD3, Control R12, And Switch S9 R12 selects time shielding gas flows bef ...
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Miller Electric TM-353E - page 26
TM-353 Page 22 Syncrowave 250 SECTION 6 – TROUBLESHOOTING 6-1. T roubleshooting T able . See Section 6-2 for test points and values and Section 10 for parts location. . Use MILLER T esting Booklet (Part No. 150 853) when servicing this unit. T rouble Remedy Prior to Serial No. KG164875, no weld output; unit completely inoperative – Effective wi ...
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Miller Electric TM-353E - page 27
TM-353 Page 23 Syncrowave 250 T rouble Remedy Check SCRs in main rectifier SR1, and replace if necessary . If any SCRs are replaced, Check capac- itors C7 through C10 for a short or open, and check for proper connections. Replace C7 through C10 if necessary . Check control board PC1 and connections, and replace if necessary . Check connections to l ...
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Miller Electric TM-353E - page 28
TM-353 Page 24 Syncrowave 250 T rouble Remedy No high frequency at spark gaps G. Check position of High Frequency switch S2 (see Section 4-1 1). Place Output (Contactor) switch S3 in Remote position and be sure remote control is connected to Remote receptacle RC1 (see Section 3-8). Check circuit breaker CB1, and reset if open (see Section 7-2). Che ...
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Miller Electric TM-353E - page 29
TM-353 Page 25 Syncrowave 250 T rouble Remedy Check Control relay CR2 contacts 4 and 7 for proper operation. Replace CR2 if necessary . Check coil voltage and connections of gas valve GS1. Check continuity of coils. Replace GS1 if nec- essary . No power output at 1 15 volts ac recep- tacle RC1; weld output available. Check circuit breaker CB1, and ...
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Miller Electric TM-353E - page 30
TM-353 Page 26 Syncrowave 250 6-2. T roubleshooting Circuit Diagram For Welding Power Source Y Disable high frequency by placing High Frequency switch S2 in Off position before testing unit. R1 V2 V3 V1 V4 V5 V6 V13 V14 V15 V16 Link 1 Link 2 V7 V8 V9 V10 V1 1 V17 V12 R1 R1 See Section 3-8 for RC1 information TD1 begins to time out when CR5 deenergi ...
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Miller Electric TM-353E - page 31
TM-353 Page 27 Syncrowave 250 SC-188 161 T e st Equipment Needed: V24 V22 V21 R3 R2 V20 A A A A R1 V25 Resistance V alues a) T olerance – ± 10% unless specified b) T u rn Off unit and disconnect input power before checking resistance R1 All values for T1, Z1, and T3 are less than 1 ohm R2 5.3 ohms R3 6.1 K ohms V oltage Readings a) T olerance ? ...
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Miller Electric TM-353E - page 32
TM-353 Page 28 Syncrowave 250 6-3. W aveforms For Section 6-2 W aveforms shown are for 60 Hertz models; waveforms for 50 Hertz models are similar. 5 ms 1 V A. SR1 Gate Pulse With Respect T o Cathode At No Load 5 ms 50 V B. DC Open-Circuit V oltage With Amperage Adjustment Control At Maximum 5 ms 20 V C. DC Output, 100 Amperes, 24 V olts DC (Resisti ...
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Miller Electric TM-353E - page 33
TM-353 Page 29 Syncrowave 250 T e st Equipment Needed: 5 ms 50 V E. AC Output, 100 Amperes, 24 V olts AC (Re- sistive Load) gnd ...
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Miller Electric TM-353E - page 34
TM-353 Page 30 Syncrowave 250 6-4. Control Board PC1 T esting Information (Use With Section 6-5) SB-178 976-A / ST-800 344-A Y Disable high frequency by placing High Frequency switch S2 in Off position before testing unit. Be sure plugs are secure before testing. See Section 6-5 for specific values during testing. 1 Control Board PC1 2 Receptacle R ...
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Miller Electric TM-353E - page 35
TM-353 Page 31 Syncrowave 250 6-5. Control Board PC1 T est Point V alues PC1 V oltage Readings a) T olerance – ± 10% unless specified b) Reference – to circuit common (lead 42) unless noted Receptacle Pin V alue RC51 1 18 volts ac input 2 18 volts ac input 3 +10 volts dc output 4 Circuit common 5 Not used 6 Not used RC52 1 Circuit common 2 +1 ...
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Miller Electric TM-353E - page 36
TM-353 Page 32 Syncrowave 250 Receptacle V alue Pin RC55 1 Circuit common 2 +1.65 volts dc per 100 amperes of weld output with respect to pin 1 3 – 15 volts dc output 4 0 to +4 volts dc input from min. to max. of Arc Control R2 with Arc Control switch S6 On 5 10 volts ac input for synchronization 6 +5.8 volts dc output 7 – 15 volts dc input fro ...
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Miller Electric TM-353E - page 37
TM-353 Page 33 Syncrowave 250 6-6. Remote Board PC2 T esting Information (Use With Section 6-7) ST-157 960-B / ST -800 344-A Y Disable high frequency by placing High Frequency switch S2 in Off position before testing unit. Be sure plugs are secure before testing. See Section 6-7 for specific values during testing. 1 Remote 14 Filter Board PC2 2 Rem ...
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Miller Electric TM-353E - page 38
TM-353 Page 34 Syncrowave 250 6-7. R emote 14 Filter Board PC2 T est Point V alues (Use With Section 6-2 And Section 6-6) PC2 V oltage Readings a) T olerance – ± 10% unless specified b) Reference – to circuit common (lead 42) unless noted Receptacle Pin V alue RC1 A 24 volts ac B Contact closure to A completes 24 volts ac contactor control cir ...
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Miller Electric TM-353E - page 39
TM-353 Page 35 Syncrowave 250 6-8. Meter Calibration SB-130 690-D / ST-800 344-A Be sure plugs are secure before calibrating meter . 1 Control Board PC1 2 V oltmeter V1 3 Ammeter A1 T op V iew R19 Amperes No calibration available for ammeter offset, or for voltmeter V1. 1 2 3 Adjust R19 for amperage gain to match external calibrated meter using loa ...
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Miller Electric TM-353E - page 40
TM-353 Page 36 Syncrowave 250 6-9. Input V oltage Labels And Connections ST-154 793-A / ST -1 14 947-A / ST-121 000-A / ST -131 735 1 Input V ol t a g e L a b e l A n d C o n - nection Diagram – Only One Label Is On Unit 2 T erminal Strip TE1 T est Equipment Needed: 1 2 ...
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Miller Electric TM-353E - page 41
TM-353 Page 37 Syncrowave 250 SECTION 7 – MAINTENANCE 7-1. Routine Maintenance Y Disconnect power before maintaining. 3 Months Replace Unreadable Labels Clean And T ighten W eld T erminals Repair Or Replace Cracked W eld Cables Adjust Spark Gaps Replace Cracked Parts 14-Pin Cord Gas Hose T orch Cable 6 Months OR Blow Out Or V acuum Inside, During ...
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Miller Electric TM-353E - page 42
TM-353 Page 38 Syncrowave 250 7-3. Fuses F1 And F2 1 Fuse F1 (See Parts List For Rating) Fuse F1 (between leads 50 and 150) protects wiring harness from shorted SR2. If F1 opens, you may experience problems with arc start- ing and arc performance in the DC TIG mode. 2 Fuse F2 (See Parts List For Rating) Fuse F2 (between leads 22 and 149) protects w ...
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Miller Electric TM-353E - page 43
TM-353 Page 39 Syncrowave 250 SECTION 8 – HIGH FREQUENCY (HF) 8-1. W elding Processes Using HF high_freq1 7/95 – S-0693 1 HF V oltage GT A W – helps arc jump air gap between torch and workpiece and/ or stabilize the arc. SA W – helps arc reach workpiece through flux granules. 2 Flux 1 2 1 Gas Tungsten Arc W elding (GT AW) Submerged Arc W el ...
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Miller Electric TM-353E - page 44
TM-353 Page 40 Syncrowave 250 8-3. Correct Installation 1 HF Source (Welder With Built-In HF Or Separate HF Unit) Ground metal machine case, work output terminal, line disconnect device, input supply , and worktable. 2 Welding Zone And Centerpoint A circle 50 ft (15 m) from centerpoint between HF source and welding torch in all directions. 3 Weld O ...
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Miller Electric TM-353E - page 45
TM-353 Page 41 Syncrowave 250 SECTION 9 – ELECTRICAL DIAGRAMS . The circuits in this manual can be used for troubleshooting, but there might be minor circuit differences from your machine. Use circuit inside machine case or contact distributor for more information. The following is a list of all diagrams for models covered by this manual. Model S ...
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Miller Electric TM-353E - page 46
TM-353 Page 42 Syncrowave 250 SC-1 14 914 Figure 9-1. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ339876 Thru JJ351864 ...
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Miller Electric TM-353E - page 47
TM-353 Page 43 Syncrowave 250 Figure 9-2. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ351865 Thru JJ365633 SC-120 877 ...
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Miller Electric TM-353E - page 48
TM-353 Page 44 Syncrowave 250 SC-121 280 Figure 9-3. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ365634 Thru JJ503983 ...
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Miller Electric TM-353E - page 49
TM-353 Page 45 Syncrowave 250 Figure 9-4. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ503984 Thru JK572897 SC-124 314 ...
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Miller Electric TM-353E - page 50
TM-353 Page 46 Syncrowave 250 SC-124 785-B Figure 9-5. Circuit Diagram For Syncrowave 250 Effective With Serial No. JK572898 Thru JK690986 ...
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Miller Electric TM-353E - page 51
TM-353 Page 47 Syncrowave 250 Figure 9-6. Circuit Diagram For Syncrowave 250 Effective With Serial No. JK690987 Thru KA806712 SC-132 697-A ...
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Miller Electric TM-353E - page 52
TM-353 Page 48 Syncrowave 250 Figure 9-7. Circuit Diagram For Syncrowave 250 Effective With Serial No. KA806713 Thru KA877024 SC-137 431 ...
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Miller Electric TM-353E - page 53
TM-353 Page 49 Syncrowave 250 Figure 9-8. Circuit Diagram For Syncrowave 250 Effective With Serial No. KA877025 Thru KB010829 SC-135 581 ...
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Miller Electric TM-353E - page 54
TM-353 Page 50 Syncrowave 250 Figure 9-9. Circuit Diagram For Syncrowave 250 Effective With Serial No. KB010830 Thru KB1 10694 SC-142 524 ...
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Miller Electric TM-353E - page 55
TM-353 Page 51 Syncrowave 250 Figure 9-10. Circuit Diagram For Syncrowave 250 Effective With Serial No. KB1 10695 Thru KC252675 SC-148 144 ...
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Miller Electric TM-353E - page 56
TM-353 Page 52 Syncrowave 250 Figure 9-11. Circuit Diagram For Syncrowave 250 Effective With Serial No. KC252676 Thru KG029204 SC-154 649-C ...
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Miller Electric TM-353E - page 57
TM-353 Page 53 Syncrowave 250 Figure 9-12. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG029205 Thru KG062109 SC-178 835 ...
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Miller Electric TM-353E - page 58
TM-353 Page 54 Syncrowave 250 Figure 9-13. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG0621 10 Thru KG170300 SC-179 303-A ...
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Miller Electric TM-353E - page 59
TM-353 Page 55 Syncrowave 250 Figure 9-14. Circuit Diagram For Syncrowave 250 Effective With Serial No. KG170301 Thru KH526230 SC-181 109-E ...
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Miller Electric TM-353E - page 60
TM-353 Page 56 Syncrowave 250 SC-188 161-A Figure 9-15. Circuit Diagram For Syncrowave 250 Effective With Serial No. KH526231 And Following ...
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Miller Electric TM-353E - page 61
TM-353 Page 57 Syncrowave 250 Notes ...
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Miller Electric TM-353E - page 62
TM-353 Page 58 Syncrowave 250 Figure 9-16. Wiring Diagram For Syncrowave 250 Effective With Serial No. KH526231 And Following ...
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Miller Electric TM-353E - page 63
TM-353 Page 59 Syncrowave 250 SD-188 162-A ...
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Miller Electric TM-353E - page 64
TM-353 Page 60 Syncrowave 250 Figure 9-17. Circuit Diagram For Control Board PC1 Effective With Serial No. KH508255 And Following (Part 1 Of 2) ...
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Miller Electric TM-353E - page 65
TM-353 Page 61 Syncrowave 250 SD-187 644 (1 of 2) ...
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Miller Electric TM-353E - page 66
TM-353 Page 62 Syncrowave 250 Figure 9-18. Circuit Diagram For Control Board PC1 Effective With Serial No. KH508255 And Following (Part 2 Of 2) ...
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Miller Electric TM-353E - page 67
TM-353 Page 63 Syncrowave 250 SD-187 644 (2 of 2) ...
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Miller Electric TM-353E - page 68
TM-353 Page 64 Syncrowave 250 Figure 9-19. Circuit Diagram For RFC Board PC2 Effective With Serial No. JJ365634 Thru KB010829 Figure 9-20. Circuit Diagram For Remote 14 Filter Board PC2 Effective With Serial No. KF959379 And Following SA-120 872 SA-121 282 Figure 9-21. Circuit Diagram For Optional Snubber Board PC3 Effective With Serial No. JJ35186 ...
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Miller Electric TM-353E - page 69
TM-353 Page 65 Syncrowave 250 SA-045 288-D Figure 9-22. Circuit Diagram For Optional Preflow Timer Board TD3 Effective With Serial No. JJ339876 And Following SA-044 725-C Figure 9-23. Circuit Diagram For Postflow Timer Board TD1 Effective With Serial No. JJ339876 And Following ...
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Miller Electric TM-353E - page 70
TM-353 Page 66 Syncrowave 250 Notes ...
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Miller Electric TM-353E - page 71
Syncrowave 250 Processes 60 Hz, 50 Hz R TM -353E January 2001 Eff. w/Serial Number JJ339876 Descr iption TIG (GT A W ) W elding Stick (SMA W) W elding Arc Welding Power Source Visit our website at www.MillerWelds.com ...
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Miller Electric TM-353E - page 72
TM-353 Page 68 Syncrowave 250 SECTION 10 – P ARTS LIST Figure 10-1. Main Assembly ST-120 135-R . Hardware is common and not available unless listed. 1 2 – Fig.10-3 3 4 5 6 7 – Fig.10-5 8 9 10 11 12 13 30 31 14 15 16 17 – Fig.10-4 18 19 20 21 22 23 24 25 26 27 28 29 – Fig.10-2 ...
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Miller Electric TM-353E - page 73
TM-353 Page 69 Syncrowave 250 Figure 10-1. Main Assembly Description Quantity Part No. Dia. Mkgs. Item No. 1 1 14 741 COVER, top (Prior to KG170301) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 182 605 COVER, top (Ef f w/KG170301) 1 . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 74
TM-353 Page 70 Syncrowave 250 Figure 10-1. Main Assembly (Continued) Description Quantity Part No. Dia. Mkgs. Item No. 22 1 14 755 BASE, (Prior to KE727074) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 170 748 BASE, (Eff w/KE727074 thru KF959176) 1 . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 75
TM-353 Page 71 Syncrowave 250 1 2 ST-120 088-G 3 4 5 6 7 4 8 9 10 12 13 Includes Item 26 11 14 15 16 17 18 19 23 25 26 27 1 21 20 28 29 22 24 Figure 10-6 Figure 10-2. Panel, Front w/Components Figure 10-2. Panel, Front w/Components (Fig 10-1 Item 29) Description Quantity Part No. Dia. Mkgs. Item No. 1 097 922 KNOB, pointer 3 . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 76
TM-353 Page 72 Syncrowave 250 Figure 10-2. Panel, Front w/ Components (Continued) Description Quantity Part No. Dia. Mkgs. Item No. 13 044 723 CIRCUIT CARD, postflow 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 S1 045 834 SWITCH, tgl DPST 60A 600V AC (Prior to KA759476) 1 ...
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Miller Electric TM-353E - page 77
TM-353 Page 73 Syncrowave 250 Figure 10-3. Rectifier , Si Diode (Fig 10-1 Item 2) Description Quantity Part No. Dia. Mkgs. Item No. 1 C7-10 031 689 CAP ACITOR, rectifier 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 083 884 CLAMP , thyristor rectifier (Prior to KG023560) 2 . . . . ...
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Miller Electric TM-353E - page 78
TM-353 Page 74 Syncrowave 250 Figure 10-5. Panel, Mtg Components (Fig 10-1 Item 7) Description Quantity Part No. Dia. Mkgs. Item No. 1 R7 186 468 RESIST OR, WW fxd 100W 50 ohm 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 17 721 P ANEL, mtg relay 1 . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 79
TM-353 Page 75 Syncrowave 250 ST-120 003-P 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 22 23 Figure 10-6. Control Panel, Lower Front Figure 10-6. Control Panel, Lower Front (Fig 10-2 Item 18) Description Quantity Part No. Dia. Mkgs. Item No. 1 16 477 CONTROL P ANEL, lower (Prior to JK572898) 1 . . . . . . . . . . . . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 80
TM-353 Page 76 Syncrowave 250 Figure 10-6. Control Panel, Lower Front (Continued) Description Quantity Part No. Dia. Mkgs. Item No. 3 126 750 CAP ACITOR ASSEMBL Y , (Eff w/JK537589 thru JK690986) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 C14 098 566 CAP ACITOR, (Prior to JK537589) 1 . . . . . . . . . . . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 81
TM-353 Page 77 Syncrowave 250 Figure 10-6. Control Panel, Lower Front (Fig 10-2 Item 18) (Continued) Description Quantity Part No. Dia. Mkgs. Item No. 18 T3 1 15 967 COIL, HF coupling (Prior to JK572898) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 T3 124 650 COIL, HF coupling (Ef f w/JK572898 thru KF ...
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Miller Electric TM-353E - page 82
TM-353 Page 78 Syncrowave 250 Eff w/KE558763 the W ater V alve Option (042 138) is no longer available and all other options are available as Field Options only . Description Quantity Part No. Dia. Mkgs. Optional Equipment 042 138 WA TER V AL VE, (consisting of) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Miller Electric TM-353E - page 83
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Miller Electric TM-353E - page 84
PRINTED IN USA 1998 Miller Electric Mfg. Co. Miller Elect ric Mfg. Co. An I l li noi s T ool Works Company 1635 W es t Spenc er St reet Applet on, WI 54914 USA International He adquarters – USA Phone: 920-735-4505 USA & Canada F AX: 9 20-735-4134 Int ernational FAX: 920-735-4125 European He adquarter s – United K i ngdom Phone: 44 (0) 1 ...
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