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SECTION 4

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MAINTENANCE & TROUBLESHOOTING

IMPORTANT:

All directions, such as left or right, are

with respect to the operator facing the turntable (front)
on the weld side of work envelope and with locking pin

assembly located at opposite side (rear).

4

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1. CLEANING AND INSPECTION

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down turntable, welding power source, and
robot control, and disconnect input power
employing “lockout/tagging procedures” before

inspecting or servicing.

Lockout/tagging procedures consist of removing plug

from receptacle, padlocking line disconnect switch in
open position, removing fuses from fuse box, or shut-
ting off and red-tagging circuit

breaker or other discon-

necting device.
MOVING PARTS can cause serious injury.

Keep clear of moving parts.

PRESSURIZED HYDRAULIC FLUID can cause

serious Injury.

Release hydraulic fluid pressure according to Sec-

tion 4-73 before touching any hydraulic com-

ponents.

Hydraulic fluid pressure is present even though elec-
trical power is disconnected.

Maintenance to be performed only by qualified persons.

A schedule for cleaning and inspection should be set
up, based on the type and conditions of service,

to in-

clude the following:

Keep the inside of the unit clean by blowing out the unit

with clean, dry compressed air.

Wipe oil spills from base and support surface im-

mediately to avoid accumulation of dust.

Check for oil leaks indicating loose hydraulic connec-

tions inside the turntable. Tighten loose connections
and wipe oil from surfaces.

Check all hoses, cords, and cables for cracks or frayed

areas. Replace any damaged hydraulic hoses and repair
or replace faulty cords or cables.

REAR

Ref. TO-i 20 290

Figure 4

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1.

Location Of Cylinder Pin Guide Bracket And Ball Bearings

FRONT

Lower

Ball

BearIng

Ref: TB-120 281

OM-890 Page

12

Содержание 5 TURNTABLE

Страница 1: ...his manual with special emphasis on the safety material throughout the manual Mlflm Electric Mfg Co AMd G o Lid Co p nv before installing operating or maintaining this equipment This unit and P0 Box 1...

Страница 2: ...ty does not apply claim procedures to be followed to components having normal useful life of less than one 1 year such as spot welder tips relay and contactor points MILLERMATIC parts that come in con...

Страница 3: ...4 3 QilFilter 13 4 4 Checking Reservoir Fluid Level 14 4 5 Adjustment Of Low Speed Rotation Control 15 4 6 Adjustment Of Locking PinSpeed Control 16 4 7 AdjustmentQf ShockAbsorbers 17 4 8 SettingHardS...

Страница 4: ...Input Power Single Phase AC Reservoir Capacity Hydraulic Fluid Pump Flow Rate System Relief Pressure Range Of System Operating Pressure 115 Volts1 60Hz Maximum 8 qt 7 6 I Fill Quantity 6 qt 5 7 I ISO...

Страница 5: ...ment clean all packing material from around the unit and carefully inspect for any damage that may have occurred during shipment Any claim for loss or damage that may have occurred in transit must be...

Страница 6: ...d tagging circuit breaker or other discon necting device MOVING PARTS can cause serious injury Keep clear of moving parts PRESSURIZED HYDRAULIC FLUID can cause serious Injury Release hydraulic fluid p...

Страница 7: ...l with Cabinet Door Open Retainer Bushing Nut Cable Connects To This End Of Mounting Rod Insulating Bushing A Inside Portion Of urntable Chassis Tension Spring Pad Fits Against Retainer Bushing Rof TB...

Страница 8: ...Robot Control terminal strips refer to circuit diagram Figure 4 25 for identifica tion of leads and connection points Input Leads 50 51 And 52 Connect To Terminals 101 140 And 141 Respectively F i i...

Страница 9: ...1 004 ROOO Turn off signal at Robot Control output port 000 that activates locking pin movement in the up direction 005 TOO 5 Robot Control timer set for 0 5 seconds to deenergize directional control...

Страница 10: ...ate rotation in the counterclockwise direction and reset time delay relay 029 PM2 Destination point 2 for jump sequence JP2 see Sequence Number 015 030 P Position home move by manipulator see Sequence...

Страница 11: ...data will depend on the desired operation 050 051 PM4 Destination point 4 for jump sequence see Sequence Number 002 052 P Position home move by manipulator see Sequence Number 001 053 END End of Prog...

Страница 12: ...Program 999 runs and rotates mounting plate on turntable Parts on side 000 for weld Pro grams 300 400 and 500 are now located at weld side of turntable see Figure 3 2 Line 2 Control unit of manipulato...

Страница 13: ...is not at weld side of turn table Control unit does not run Program 300 TA 120 271 Line 3 No input signal is present at control unit input port 000 Control unit does not run Program 400 Line 4 No inp...

Страница 14: ...ARNING ELECTRIC SHOCK can kill Do not touch live electrical parts Shut down turntable welding power source and robot control and disconnect input power employing lockout tagging procedures before sett...

Страница 15: ...AULIC FLUID can cause serious Injury Release hydraulic fluid pressure according to Sec tion 4 73 before touching any hydraulic com ponents Hydraulic fluid pressure is present even though elec trical p...

Страница 16: ...s are present more frequent lubrication may be necessary Lube fitting is located below mounting plate in the cylinder pin guide bracket Use a lithium base grease for lubrica tion Sufficient lubricatio...

Страница 17: ...4 4 CHECKING RESERVOIR FLUID LEVEL Figure 4 3 IMPORTANT The initial break in time for the hydraulic system is2 days of turntable operation which allows the fluid level in the reservoir to stabilize A...

Страница 18: ...ocated in the return line between the filter and directional control valves is equipped with an adjustment knob to allow increasing or decreasing the exhaust flow of hydraulic oil to the reservoir met...

Страница 19: ...can be obtained by rotating the adjustment knob fully clockwise to the closed position then rotate adjustment knob one fully turn counterclockwise and make fine adjustment from this coarse setting as...

Страница 20: ...bsorber body rotates to allow changing the amount of shockabsorber cushioning A scalefrom 0 to 9 on the shock absorber body indicates maximum to minimum cushioning adjustment respectively If cushionin...

Страница 21: ...ually run the program for rotating mounting plate using the BLOCK FORWARD CON TINUOUS mode 4 Check mounting plate receiver hole position at the locking pin location to determine direction of hole misa...

Страница 22: ...maximum fluid pressure is restored in the accumulator The switch deenergizes the motor at a maximum pressure setting and the accumulator begins supplying pressurized fluid to the various hydraulic fun...

Страница 23: ...um pressure adjustment setting to increase above specification value It may be necessary to adjust the differential and maximum pressure adjustment controls several times to set range limits to specif...

Страница 24: ...ing plug from receptacle padlocking line disconnect switch in open position removing fuses from fuse box or shut ting off and red tagging circuit breaker or other discon necting device MOVING PARTS ca...

Страница 25: ...e electricalparts Shut down turntable welding power source and robot control and disconnect input power employing lockout tagging procedures before inspecting or servicing Lockout tagging procedures c...

Страница 26: ...ry actuator mounting plate to in IMPORTANT crease belt tension Belt should be snug but not overtightened C Adjusting Index Rotation Of Mounting Plate Receiver holes in the mounting plate allow the loc...

Страница 27: ...can cause serious injury Release hydraulic fluid pressure according to Sec tion 4 13 before touching any hydraulic com ponents Hydraulic fluid pressure is present even though elec trical power is dis...

Страница 28: ...re switch to mounting base through access holes provided in top of switch box Pink Lead Black Lead Black Jumper Lead 4 Remove the 4 screws securing wiring cover to switch box 5 Disconnect leads from t...

Страница 29: ...ut ting off and red tagging circuit breaker or other discon necting device control For Mounting Plate Rotation MOVING PARTS can cause serious injury Keep clear of pinch points PRESSURIZED HYDRAULIC FL...

Страница 30: ...e propedy setinto the contact surface seats before install ing valve 10 Install and secure control valve to manifold block with the 4 screws removed in Step 4 see Figure 4 15 11 Install and secure wir...

Страница 31: ...Lift rotary actuator assembly up and out of turn table from left side of chassis 9 Remove hydraulic fittings from rotary actuator ports 10 Remove the 3 bolts that secure the tapered bushing in the dr...

Страница 32: ...e pusher bolts in drive pulley so that end of bolts are flush with bottom of pulley hub IMPORTANT When installing pulley onto tapered bushing be sure to line up bolt holes in pulley hub and bushing 11...

Страница 33: ...elec trical power is disconnected 1 Release pressurized fluid from accumulator see Section 4 13 2 Disconnect hydraulic hose from lower fitting on valve 3 Loosen upper fitting and disconnect valve fro...

Страница 34: ...e is present even though elec trical power is disconnected 5 Release pressurized fluid from accumulator see Section 4 13 IMPORTANT When removing cylinder pin guide bracket from turntable chassis be su...

Страница 35: ...rsource and robot control and disconnect input power employing lockout tagging procedures before inspecting or servicing Lockout tagging procedures consist of removing plug from receptacle padlocking...

Страница 36: ...e electrical parts Shut down turntable welding power source and robot control and disconnect input power employing lockout tagging procedures before inspecting orservicing Lockout tagging procedures c...

Страница 37: ...VOIR ASSEMBLY WARNING ELECTRIC SHOCK can kill Do not touch live electricalparts Shut down turntable welding power source and robot control and disconnect input power employing lockout tagging procedur...

Страница 38: ...4 23 Hydraulic Line To 12 Install replacement motor pump and reservoir assembly on turntable base and secure assembly with the 4 bolts removed in Step 8 13 Remove screws and cover from replacement mot...

Страница 39: ...ng any hydraulic com ponents Hydraulic fluid pressure is present even though elec trical power is disconnected Fuses Fl and F2 rated at 15 amperes protect the con trol circuit and transformer against...

Страница 40: ...ies for some of the troubles that may develop in this turntable Use these charts in conjunctionwith the circuit diagram and hydraulic diagram while performing troubleshooting procedures If the trouble...

Страница 41: ...cable connection or adjust spring welding contact pad tension for contact pad see Section 2 1 HYDRAULIC MECHANICAL TROUBLESHOOTING TROUBLE PROBABLE CAUSE REMEDY Mounting plate rotation not No bearing...

Страница 42: ...16 Mounting plate knocker block slamming into hard stops Air in hydraulic system Add hydraulic fluid to reservoir and rotate moun ting plate several times see Section 4 4 Time delay relay TDR set ting...

Страница 43: ...0 Old l J 1 C4 0 z E N CU F N N a 4 C J N L a N E 0 0 a 4 0 a U 4 C w CC N 0 J c l J OM 890 Page 40...

Страница 44: ...Circuit Diagram No A 120 980 Figure 4 26 Hydraulic Circuit Diagram r U n J OM 890 Page 41...

Страница 45: ...July 1988 FORM OM 890 PARTS LIST...

Страница 46: ...1 2 19 TO 120 290 FIgure A Main Assembly 41 21 9 10 Fig 0 44 37 36 35 34 12 FIg C 11 15 11 12 1 3 E 18 N N S 27 25 20 21 30 OM 890 Page 1...

Страница 47: ...IC CYLINDER FITTING HOSE HOSE HYDRAULIC HOSE HYDRAULIC SHOCK ABSORBER ASSEMBLY Pg 8 HOSE HYDRAULIC SIGHT GAUGE FITTING HOSE PRESSURE RELIEF VALVE HYDRAULIC PUMP MOTOR ASSEMBLY FITTING HOSE HOSE HYDRAU...

Страница 48: ...5 6 TD 120 289 Figure B Control Panel OM 890 Page 3...

Страница 49: ...B ELECTRICAL ENCLOSURE TOGGLE SWITCH ON OFF CONTROL CIRCUIT TRANSFORMER 110 24 VOLTS FUSE BLOCK TERMINAL STRIP TERMINAL STRIP FUSE 15AMPAGC FUSE 1 0 AMPAGC RELAY SOCKET BASE RELAY ENCLOSED 24 VOLTS AC...

Страница 50: ...p 0 E 0 to to 4 a C 0 C C U a V p r C 0 a OM 890 Page 5 3 N 6 H...

Страница 51: ...ING HOSE HOSE HYDRAULIC FITTING HOSE HOSE HYDRAULIC FITTING HOSE FITTING HOSE FITTING HOSE FLOW CONTROL VALVE MANIFOLD MTG BRACKET HOSE HYDRAULIC FITTING HOSE HIGH SPEED SOLENOID HOSE HYDRAULIC FITTIN...

Страница 52: ...consisting GROUND PAD PROXIMITY SWITCH FLAGS LOWER BEARING BEARING ALIGNMENT PLATE 122 086 MTG PLATE ASSEMBLY 122 085 123 224 122 091 122 083 of ROTARY ACTUATOR 180 DEGREE SHAFT KEY ROTARYACTUATOR BR...

Страница 53: ...077 122 078 122 076 122 079 122 080 SHOCK MTG NUT LARGE HYDRAULIC SHOCK ABSORBER SHOCK MTG NUT SMALL SHOCK MTG PLATE SHOCK ASSEMBLY MTG PLATE BE SURE TO PROVIDE MODEL AND SERIAL NUMBER WHEN ORDERING...

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