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<5.  Maintenance>

5-2

IM 02M04B01-01EN

NOTE

•  Controller is equipped with either a locally-

adjusted set point (set point knob, standard; 

MC43-



N-N) or a remotely-adjusted 

set point (pneumatic set, optional; MC43-



C-P).

•  If controller is equipped with optional 

automatic-manual transfer system (MC43-



C-P).

a. Amplifier is located as shown.

b. Air to automatic control system can be 

turned off.  If automatic control section 

(amplifier, restrictor, control unit, etc.) 

requires servicing, controller can be 

operated manually.

•  For component connection identifications, 

refer to section 5.13.

5.3  To Clean Restrictor

Restrictor is screwed into base of amplifier.

F0504.ai

Location of amplifier 

WITHOUT auto-man 

transfer system.

Location of amplifier 

WITH auto-man 

transfer system.

1

1.  Unscrew restrictor. (With restrictor at right, use 

offset screwdriver).

2.  Clean with O.D 0.13 mm wire.

3.  Before reinstalling restrictor, apply a thin film of 

Vaseline or similar lubricant to O-ring.

5.4  To Replace Pneumatic 

Amplifier

1.  To remove amplifier, remove two large screws 

and pry off.  A gasket is supplied with each 

replacement amplifier.

2.  Do not remove plate between amplifier and 

manifold.

Illustrated is location of amplifier in controller 

without auto-man transfer system; for other 

amplifier location, see upper illustration.

5.5  To Replace Screens

3.  If screens become clogged, pry out with a 

pointed tool and replace.

NOTE

Filters are always located as shown regardless 

of location of relay.

Summary of Contents for MC43

Page 1: ...User s Manual MC43 Pneumatic Indicating Controller IM 02M04B01 01EN IM 02M04B01 01EN 13th Edition...

Page 2: ...ation 2 2 2 4 Model and Suffix Codes 2 4 2 5 External Dimension 2 4 3 Installation 3 1 3 1 Mounting 3 1 3 2 Air Supply and Output Piping 3 2 4 Operation 4 1 4 1 Automatic Manual Transfer System 4 1 4...

Page 3: ...eneral A1 1 A1 2 Calibration and Replacement of Pressure Elements A1 2 Appendix 2 Thermal Elements A2 1 A2 1 General A2 1 A2 2 Calibration and Replacement of Thermal Elements A2 2 Customer Maintenance...

Page 4: ...immediately be reflected in this manual at the time of change provided that postponement of revisions will not cause difficulty to the user from a functional or performance standpoint Safety Precauti...

Page 5: ...ecting fluid to the instrument may damage the plastic parts resulting from corrosion or cracking Warranty The warranty shall cover the period noted on the quotation presented to the purchaser at the t...

Page 6: ...torage area which meets the following conditions It is not exposed to rain or subject to water seepage leaks Vibration and shock are kept to a minimum It has an ambient temperature and relative humidi...

Page 7: ...50 minutes Differential Gap 2 to 100 Output Signal 20 to 100 kPa 0 2 to 1 0 kgf cm2 A2 A3 A4 A5 B4 Types 0 kPa or air supply A1 A7 Types Air Supply 140 kPa 1 4 kgf cm2 Air Consumption 0 5 Nm3 h Air C...

Page 8: ...ts at its center on end of a flat spring 3 This motion changes flapper nozzle relationship causing amplifier to establish an output pressure 4 Output pressure is fed back to proportioning bellows whic...

Page 9: ...C43 controller proportional plus integral operation This batch attachment is normally set to operate when a pneumatic pressure of 1 0 kgf cm2 100 kPa 1 0 bar 15 psi is applied When the controller outp...

Page 10: ...pneumatic set point 2 Style A Style A Base Instrument Option refer to GS 02M04B01 00EN Measuring Element and Option refer to GS 02M04B01 00EN 1 Batch plus proportional plus derivative not additional f...

Page 11: ...8 Max 4 6 5 0 26 Holes M5 or No 10 24UNC Threads 126 5 4 98 238 9 37 237 3 0 9 33 0 12 0 322 4 0 12 68 0 16 0 Figure 3 1 Dimensions for Panel and Surface Mounting 2 inch Pipe Mounting Procedure 1 Scre...

Page 12: ...urface Mounting Procedure 1 Use M5 5mm or No 10 24UNC screws 2 In this case the bolts bracket etc are not necessary Figure 3 4 Surface Mounting 3 2 Air Supply and Output Piping F0305 ai If output puls...

Page 13: ...turn switch to automatic A 2 To Transfer from Automatic to Manual Control Turn regulator slowly to move balance indicator ball to within central portion of tube not up against either end Turn regulato...

Page 14: ...stabilized move transfer switch to automatic Process is now on automatic control 7 If controller is not equipped with optional automatic manual switch turn on 140 kPa air supply 8 After measurement h...

Page 15: ...t reverses and recrosses the control point the control valve fully closes or opens 1 Rotate control dial so that arrow points to small rectangle of desired control action 2 If setting index and measur...

Page 16: ...two mounting screws b Connect tubing to the batch attachment as shown in Figure below Loosen the lock nut on top of the batch attachment Turning the operating point adjustment clockwise increases the...

Page 17: ...section 5 11 and 5 12 DIFFICULTY Maximum pressure at all times at output gauge 1 Check for mechanical damage resulting in nozzle always being covered by flapper 2 Check for misalignment of amplifier...

Page 18: ...lifier F0504 ai Location of amplifier WITHOUT auto man transfer system Location of amplifier WITH auto man transfer system 1 1 Unscrew restrictor With restrictor at right use offset screwdriver 2 Clea...

Page 19: ...refully note arrangement of tubing and identification of tubing at points of disconnection A convenient place to disconnect tubing is at junction of gray and black tubing 1 Remove set point index and...

Page 20: ...ion MC43 A3 F0515 ai From manifold To proportional bellows 3 Remove tubing from both connections of derivative assembly Connect these 2 ends together use coupling Part C0128NE Remove derivative assemb...

Page 21: ...10 in both sectors are satisfactory without adjusting set point index more than 2 of scale 4 With dial in control sector to be used set dial at 10 Adjust set point knob so that output is 60 kPa 0 6 kg...

Page 22: ...bruptly output is either 0 or 140 kPa The difference between these readings divided by span is actual gap width EXAMPLE Scale 20 to 120 Control points 70 and 90 Gap width 90 70 20 120 20 If gap width...

Page 23: ...utput Nozzle connection To integral bellows To manifold P P I P D P I D Proportional Action Proportional Integral Actions Proportional Derivative Actions Proportional Integral Derivative Plugged To In...

Page 24: ...acking each connection to its element and referring to the nameplate on the element 3 With gas or steam applications connections at the pipe or vessel are to be made on the top or side With liquid app...

Page 25: ...low line To Fill Line before zeroing Liquid Open valve A Open valve C until liquid flows free of bubbles Close valve C Steam Open valve A and allow piping between plug B and instrument to fill with co...

Page 26: ...at mid range If pointer is not at midscale adjust length of link to move pointer about 5 times amount of error in direction of error Subsequent refinement in settings of adjustments will bring instru...

Page 27: ...ai Plain Bulb With Bendable Extension Fixed Union Assembly Bendable bulb extension J Sensitive length X Y Y Jam nut Bulb extension Bushing Sensitive length X Insertion length U FA0203 ai Adjustable U...

Page 28: ...e Plastic Coated FlexibleTube 7 6 cm radius Bulb Extension 3 0 cm radius A2 2 Calibration and Replacement of Thermal Elements Two test baths at widely separated temperature in the measurement range ar...

Page 29: ...temperature If reading is not correct use reference adjustment to reposition pointer 2 Check pointer reading at higher test temperature If reading is not correct use multiplication adjustment to repos...

Page 30: ...g careful not to pinch or crimp their tubing remove both units FA0214 ai Screw Bracket 6 Loosen screws holding derivative and reset brackets remove brackets 7 Remove three screws holding connector pla...

Page 31: ...Spindle Bushing Thermo sensitive bulb Insertion length Gland nut Capillary Spindle Step No Instruction Sectional View of Adjustable Union 4 3 2 1 Screw the bushing into the mounting hole of a pipe or...

Page 32: ...2014 3 0 3 or 4 FB0120 pdf Disassembling the Adjustable Union To disassemble the union follow the steps in the table above exactly in their reverse order Handling the Flattened Sides of the Spindle FA...

Page 33: ...e F H Scew M4 x 8 1 2 3 4 5 6 7 8 9 10 Below F9123CA F9123CC F9123CH F9123EE F9123ED Below F9123EB F9123EJ F9123EC Y9406JS F9123EL F9123EA Y9408EU 1 1 1 1 1 1 4 1 2 10 Item Part No Description Qty Des...

Page 34: ...2 CMPL 02M04B01 01E Feb 2012 Subject to change without notice...

Page 35: ...25 26 27 28 29 30 31 M0154RD F9123HA Y9510JS E9123GE Y9408JS M0154NT Y9304JS Below F9123JA F9123JB Below F9123JE F9123JF B0101LK Y9510JU F9123JA B0101LK Y9510JU F9123LU Y9510JU F9147BG F9123LV Below...

Page 36: ...4 CMPL 02M04B01 01E Jan 2003 Subject to change without notice...

Page 37: ...2 26 27 28 29 30 31 32 C0140ZV C0140ZU C0140ZS C0140ZT F9138QS F9138RD Y9408JS C0138BM F9136ME Y9412JS 1 2 2 1 1 2 1 1 2 1 2 1 1 2 2 1 1 1 4 1 1 2 1 2 2 1 1 2 2 Item Part No Description Control Mode 1...

Page 38: ...6 CMPL 02M04B01 01E Jan 2003 Subject to change without notice...

Page 39: ...Assembly For JIS Connection Manifold Assembly For ANSI Connection Connection Assembly Tube Assembly O Ring Tube Assembly Manifold Assembly Pan H Screw Clamp Pan H Screw M4 x 8 Tube 1 2 3 4 5 6 7 8 12...

Page 40: ...t to change without notice Bracket Hex H Bolt Washer Bracket Screw Assembly Screw Washer Nut Screw 1 2 3 4 5 6 7 8 9 F9123GA Y9814NU Y9800WU F9123GC F9123GF F9123GB Y9601WU Y9601BU F9123GG 1 4 4 1 1 4...

Page 41: ...to 0 27 MPa for ranges 0 28 to 0 34 MPa for ranges 0 35 to 0 41 MPa for ranges 0 42 to 0 55 MPa for ranges 0 56 to 0 69 MPa for ranges 0 70 to 0 82 MPa for ranges 0 83 to 1 03 MPa for ranges 1 04 to...

Page 42: ...e not over 9 7 MPa Tube Assembly 9 8 MPa or greater Compression Screw Sleeve Nut Link Assembly 1 2 3 4 5 6 7 8 9 10 Below P0106MA P0106MB P0106MC P0106ME P0106MF P0106MK P0106ML P0106MM P0106MN P0106M...

Page 43: ...List T1A Temperature Element CMPL 06P01F01 02E 4th Edition Nov 2015 YK Thermal Element T1A give calibration range full element model and instrument serial number See GS 02D01J01 or 02M04B01 Link Assem...

Page 44: ...2017 CONTENTS 1 1 2 1 2 3 A2 5 A2 6 Revision Information 1 1 Model and Specifications Check 1 1 Model Specifications and Accessories check Add Revision Information Add accessories check Revised standa...

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