Flowserve MX Limitorque User Manual

	USER INSTRUCTIONS
Limitorque MX	Maintenance
Electronic Actuator	and Spare Parts
FCD LMENIM2314-00 – 07/08

Experience In Motion

Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

Contents

1		Introduction	1
		1.1  Premise	1
		1.2  Procedure Emphasis	1
		1.3  Important Notes and Warning Statements	1
		1.4  Reference Documents	2
	2	MX Actuator Subassembly	3
		2.1  MX Actuator Subassembly Components	4
		2.1.1  Product Description	4
		2.1.2  Storage	4
		2.1.3  Unit Weights	5
		2.2  Product Identification	5
		2.2.1  Initial Inspection and Recording Suggestions	5
		2.3 Maintenance	6
		2.3.1  Recommended Maintenance	6
		2.3.2  Unit Lubrication	6
		2.3.3  O-Ring and Lubrication	8
		2.4  Subassembly Removal and Remounting Procedures	8
		2.5  How to Order Replacement Subassemblies	9
		2.5.1  Replacement Parts	9
		2.5.2  Return Procedure	9
	3 Remove Actuator from Mounting Adapter		11
		3.1  Actuator Removal with Type B1/B4/B4E Base (Torque)	11
		3.1.1  Removal (Type B1/B4/B4E Base)	11
		3.1.2  Remounting (Type B1/B4/B4E Base)	12
		3.2  Actuator Removal with Type A1/A1E Base (Thrust)	14
		3.2.1  Removal (Type A1/A1E Base) Actuator Removal Separate from Thrust Base	14
		3.2.2  Remounting (Type A1/A1E Base) Actuator Remounting Separate from Thrust Base	15
		3.2.3  Removal (Type A1/A1E Base) Actuator and Thrust Base as a Unit	17
		3.2.4  Remounting (Type A1/A1E Base) Actuator and Thrust Base as a Unit	18
	4	Mechanical Assemblies	19
		4.1  Motor	19
		4.1.1  Removal	20
		4.1.2  Remounting	21
		4.1.3 Removal and mounting of MX-140 motor (40 RPM and greater)	22
		4.1.4 Remounting	23
		4.1.5 Mounting of MX-150 motor	23
		4.2  Declutch	25
		4.2.1  Removal	27
		4.2.2  Remounting	29
		4.3  Top-Mounted Handwheel (MX-05, -10, -20, and -40)	32
		4.3.1  Removal	33
		4.3.2  Remounting	33
		4.4  Side-Mounted Handwheel Without Spur Gear Attachment (MX-10, -20, -85, -140, and -150)	35	i
		4.4.1  Side-Mounted Handwheel Without Spur Gear Attachment (MX-85, -140, and -150)	36
		4.4.2  Removal of Side-Mounted Handwheel (MX-10, -20, -85, -140, and -150)	37
		4.4.3  Removal	37
		4.4.4  Remounting	39

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

4.5  Side-Mounted Handwheel With Spur Gear Attachment (MX-40, -85, -140, and -150)	40
4.5.1  MX-85, -140, and -150 Handwheel with SGA	41
4.5.2  Removal of Handwheel	42
4.5.3  Removal	42
4.5.4  Remounting	45
4.6  Converting Top-Mounted Handwheel to Side-Mounted Handwheel (MX-10, -20, and -40)	50
4.6.1  Removing Top-Mounted Handwheel	50
4.6.2  Installing Side-Mounted Handwheel	51
4.7  Thrust Base Type A1/A1E	53
4.7.1  Removal	56
4.7.2  Remounting	56
4.8  Torque Base Type B1	57
4.8.1  Removal	58
4.8.2  Remounting	58
4.9  Baseplate Type B4	59
4.9.1  Removal	60
4.9.2  Remounting	62
4.10  Worm Shaft	63
4.10.1  Removal	64
4.10.2  Remounting	65
4.11  Drive Sleeve (MX-05 and -10)	67
4.11.1  Removal	68
4.11.2  Remounting	69
4.12  Drive Sleeve (MX-20, -40, -85, -140, and -150)	70
4.12.1  Removal	71
4.12.2  Remounting	73
4.12.3  MX-85, -140, and -150 Optional Drive Sleeve and Baseplate Removal	74
4.12.4  MX-85, -140, and -150 Optional Drive Sleeve and Baseplate Remounting	76
4.13  Handwheel Adapter (MX-05)	77
4.13.1  Removal	78
4.13.2  Remounting	79
4.14  Handwheel Adapter (MX-10, -20 and -40)/Handwheel Worm Gear (MX-10, -20, -40, -85, -140, and -150)	81
4.14.1  Removal	83
4.14.2  Remounting	84
4.15  Clutch and Clutch Ring Components (MX-20, -40, -85, -140, and -150)	87
4.15.1  Removal	88
4.15.2  Remounting	89
5 Electronic Assemblies	93
5.1  Control Panel (CP)	93
5.2  Control Module	94
5.2.1  Removal	95
5.2.2  Remounting	98
5.2.3  Fuse Replacement	101
5.2.4  Control Module Return Options	102
5.2.5  EPROM Care and Replacement	102

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

5.3  Installation and Removal of SMT Controls
(most units supplied after September 2003 and before September 2007)	105
5.3.1  Installation	105
5.3.2  Removal	108
5.3.3  Fuse Replacement	108
5.3.4  Control Module Return Options	108
5.4  Mounting of SMT Controls with 54-point terminal block and four LED configuration
(some units supplied from December 2006 with majority after September 2007)	109
5.4.1 Installation	109
5.4.2 Removal	110
5.5  Mounting of Standard and Optional Controls with 54-point terminal block and four LED configuration	111
5.5.1 Installation	111
5.5.2 Removal	114
5.6  Adding Electronic Options to Your MX Actuator(Most Supplied After September 2007)	114
5.7  Restoring Power to Actuator with New Control Module	115
5.8  Terminal Block (prior to March 2007)	115
5.8.1  Removal	116
5.8.2  Remounting	118
5.9  MX Terminal Block (Supplied With Most Actuators Since March 2007)	120
5.9.1 Terminal Block Shield Installation	120
5.10  Control Module-Contactor Assembly (Not required for most actuators shipped after September 2007.
Please see Section 5.4 for power board installation with contactor.)	121
5.10.1  Removal	122
5.10.2  Remounting	123
5.11  Replacing 19 Amp Reverser on the MX-140 and -150 (Not for most actuators shipped after September 2007)	125
5.12  19 Amp Power Assembly for Units Shipped After September 2007	128
5.13  Encoder (Through hole and surface mount technology, most units prior to September 2007)	129
5.13.1  Removal	130
5.13.2  Remounting	132
5.14  Encoder Drive Cartridge (Most units prior to September 2007)	133
5.14.1  Removal	134
5.14.2  Remounting	135
5.15  Removal and Replacement of MX Encoder (Supplied With Most Actuators Since September 2007)	136
5.15.1  Removal	137
5.15.2  Remounting	137
5.16  Encoder Drive Cartridge (Supplied With Most Actuators Since September 2007)	138
5.16.1  Removal	139
5.16.2  Remounting	140
5.17  Motor Lead Harness (MX-85, -140, and -150)	141
5.17.1  Removal	141
5.17.2  Remounting	142
5.18  Solid State Motor Reverser Upgrade Instructions (Most units prior to September 2007)	143
5.18.1  Disassembly Procedure	144
5.18.2  Assembly Procedure	145
5.19 Mounting of SSMR (Solid State Motor Reverser) in units shipped after February 2008	147
5.20  Complete Conversion to SMT Controls	149

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

6 Spare and Replacement Parts	150
6.1  Guidelines for Recommended Spare Parts	150
6.1.1  Wear Components	150
6.1.2  Bearings, O-rings, and Seals	150
6.1.3  Critical Components	151
6.2  Recommended Spare Parts for MX Actuators	151
6.2.1  Commissioning and Startup	151
6.2.2  Short-Term Duty	151
6.2.3  Long-Term Duty	151
6.2.4  Severe Duty	152
6.3  Other Concerns	152
7 Regulatory Information	154
7.1  Declaration of Conformity	154

Figures

	Figure 2.1 – Typical MX Actuator	3
	Figure 2.2 – MX Nameplate	5
	Figure 2.3 – Oil Fill/Plug Locations (MX-05 through -40)	7
	Figure 2.4 – Oil Fill and Drain Locations (MX-85, -140, and -150)	7
	Figure 4.1 – Motor (MX-05, -10, -20, and -40)	19
	Figure 4.3 – Motor, Support Plate and Adapter (MX-150)	24
	Figure 4.4 – Declutch (MX-05 and -10)	25
	Figure 4.5 – Declutch (MX-20 and -40)	26
	Figure 4.6 – Declutch (MX-85, -140, and -150)	27
	Figure 4.7 – Top-Mounted Handwheel (MX-05, -10, -20, and -40)	32
	Figure 4.8 – Side-Mounted Handwheel (MX-10 and -20)	35
	Figure 4.9 – Side-Mounted Handwheel (MX-85, -140, and -150)	36
	Figure 4.10 – Side-Mounted Handwheel with SGA (MX-40)	40
	Figure 4.11 – Side-Mounted Handwheel With SGA (MX-85, -140, and -150)	41
	Figure 4.12 – Type A1 Thrust Base (MX-05, -10, -20, and -40)	53
	Figure 4.13 – Type A1 Thrust Base (MX-85) - F16 Flange	54
	Figure 4.14 – Type A1 Thrust Base (MX-85, -140, and -150) - F25 Flange	55
	Figure 4.15 – Type B1 Torque Base (MX-05, -10, -20, and -40)	57
	Figure 4.16 – Type B4 Baseplate (MX-05, -10, -20, and -40)	59
	Figure 4.17 – Type B4 Baseplate (MX-85, -140, and -150)	60
	Figure 4.18 – Worm Shaft (MX-05, -10, -20, and -40)	63
	Figure 4.19 – Drive Sleeve (MX-05 and -10)	67
	Figure 4.20 – MX-20 and -40 Drive Sleeve	70
	Figure 4.21 – MX-85, -140, and -150 10:1 and 13:1 ratios	71
	Figure 4.22 – Handwheel Adapter (MX-05)	77
iv	Figure 4.23 – Handwheel (MX-05)	77
	Figure 4.24 – Handwheel Adapter Assembly	81
	Figure 4.25 – Handwheel Worm Gear Assembly	82
	Figure 4.26 – MX-20 and -40 Clutch and Ring Components	87
	Figure 4.27 – MX-85, -140, and -150 Clutch and Ring Components	87

Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

Figure 4.28 – MX-85, -140, and -150 Clutch Ring	90
Figure 5.1 – Control Panel	93
Figure 5.2 – Control Module	94
Figure 5.3 – Location of Fuses and Voltage Jumper	101
Figure 5.4 – LCS Board	102
Figure 5.5 – Main CPU Board	102
Figure 5.6 – Power Board	103
Figure 5.7 – DDC Board	103
Figure 5.8 – Location of Fuses and Voltage Jumper	108
Figure 5.9 – SMT Controls with four LEDs	109
Figure 5.10 – Option Board Assembly	113
Figure 5.11 – Restoring Power to Actuator with New Control Module	115
Figure 5.12 – Terminal Block	116
Figure 5.13 – Terminal Block	120
Figure 5.14 – Terminal Block Shield	120
Figure 5.15 – Control Module - Contactor Assembly and Wiring Diagrams	121
Figure 5.15 – (continued)	122
Figure 5.16 – Encoder	130
Figure 5.17 – Encoder Drive Cartridge	133
Figure 5.18 – Encoder	136
Figure 5.19 – Encoder Drive Cartridge	138
Figure 5.20 – Motor Lead Assembly	141
Figure 5.21 – Cutaway View of SSMR Controls Area	143
Figure 5.22 – Disassembly Procedure	144
Figure 5.23 – Solid State Reverser and Fuse Block Assembly Installation	145
Figure 5.24 – Control module reinstallation	146
Figure 5.25 – SSMR (Solid State Motor Reverser)	148

Tables

	Table 2.1 – MX Actuator Subassembly Components		4
	Table 2.2 – Unit weights		5
	Table 2.3 – MX-05 and -10 Oil Capacities when using Oil Fill/Plug Ports		8
	Table 4.1 – Motor Parts List		19
	Table 4.2	– Motor Parts List	22
	Figure 4.2 – Motor and Adapter (MX-140)		22
	Table 4.3 – Motor Parts List		23
	Table 4.4 – Declutch Parts List (MX-05 and -10)		25
	Table 4.5 – Declutch Parts List (MX-20 and -40)		26
	Table 4.6 – Declutch Parts List (MX-85, -140, and -150)		27
	Table 4.7	– Top-Mounted Handwheel Parts List (MX-05, -10, -20, and -40)	32
	Table 4.8	– Side-Mounted Handwheel Parts List (MX-10 and -20)	35	v
	Table 4.9	– Side-Mounted Handwheel without Spur Gear Attachment Parts List (MX-85, -140, and -150)	36
	Table 4.10 – Side-Mounted Handwheel Parts List (MX-40)		40
	Table 4.11 – Side-Mounted Handwheel Parts List (MX-85, -140, and -150)		41
	Table 4.12 – Type A1 Thrust Base Parts List (MX-05, 10, -20, and -40)		53

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

Table 4.13 – Type A1 Thrust Base Parts List (MX-85)	54
Table 4.14 – Type A1 Thrust Base Parts List (MX-85, -140, and -150) - F25 Flange	55
Table 4.15 – Type B1 Torque Base Parts List (MX-05, -10, -20, and -40)	57
Table 4.16 – Type B4 Baseplate Parts List	59
Table 4.17 – Worm Shaft Parts List	63
Table 4.18 – Drive Sleeve Parts List (MX-05 and -10)	67
Table 4.19 – Drive Sleeve Parts List (MX-20, -40, -85, -140, and -150)	70
Table 4.20 – Handwheel Adapter Parts List (MX-05)	77
Table 4.21 – Handwheel Adapter Assembly Parts List	81
Table 4.22 – Handwheel Worm Gear Assembly Parts List	82
Table 4.23 – Clutch and Clutch Ring Components Parts List	87
Table 4.24 – Clutch Ring Assembly Parts List	90
Table 5.1 – Control Panel Parts List	93
Table 5.2 – Control Module Parts List	94
Table 5.3 - Voltage Jumper Positions	109
Table 5.4 - Control Board Connectors	112
Table 5.5 - Screw Part Numbers	113
Table 5.5 – Terminal Block Parts List	115
Table 5.7 – Terminal Block Parts List	120
Table 5.8 – Control Module-Contactor Assembly Parts List	121
Table 5.9 – 19 Amp Power Assembly	128
Table 5.10 – Encoder Parts List	129
Table 5.11 – Encoder Drive Sleeve Speed (RPM)	130
Table 5.12 – Encoder Drive Cartridge Parts List	133
Table 5.13 – Encoder Drive Cartridge Drive Sleeve Speed	133
Table 5.14 – Encoder Parts List	136
Table 5.15 – Encoder Drive Sleeve Speed (RPM)	136
Table 5.16 – Encoder Drive Cartridge Parts List	138
Table 5.17 – SSMR Upgrade Kit Parts List	143
Table 5.18 – SSMR Motor Fuse Table	145
Table 5.19 - SSMR Parts List	147

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

1 Introduction

1.1  Premise

The Flowserve Limitorque MX actuator components are separated into subassembly groupings. This manual covers the removal and remounting procedures for each subassembly group. Use these instructions when disassembly is required for service, maintenance, or parts replacement.

1.2  Procedure Emphasis

Please refer to the following methods used to emphasize text throughout this manual. Safety warnings, cautions, and notes present material that is important to user safety. Be sure to read any safety notices you see, as they could prevent equipment damage, personal injury, or even death to you or a co-worker.

Safety notices are presented in this manual in three forms:

cWARNING: Refers to personal safety. Alerts the user to potential danger. Failure to follow warning notices could result in personal injury or death.

aCAUTION: Directs the user’s attention to general precautions that, if not followed, could result in personal injury and/or equipment damage.

NOTE: Highlights information critical to the user’s understanding of the procedure.

Bold text stresses attention to the details of the procedure.

1.3  Important Notes and Warning Statements

Please read this Maintenance and Spare Parts Manual carefully and completely before attempting to

store or perform maintenance on your MX valve actuator. Further installation, setup, and operation 1 instructions are available in the Installation and Operation manual (LMENIM2306) located in the actuator

terminal compartment at shipment.

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

cWARNING: Be aware of electrical hazards within the actuator and high-pressure hazards of the attached valve or other actuated device when installing or performing maintenance on your MX actuator. Failure to observe these precautions could result in serious bodily injury, damage to the equipment, or operational difficulty.

cWARNING: Do not manually operate actuator with devices other than installed handwheel and declutch lever. Using additive force devices (cheater bars, wheel wrenches, pipe wrenches, or other devices of this nature) on the actuator handwheel or declutch lever may cause serious personal injury and/or damage to the actuator or valve.

1.4  Reference Documents

•Protection, Control and Monitoring features of MX Electric Actuators (Bulletin LMENTB2300)

•MX Control, Performance and Value in Multi-turn Electric Valve Actuators (Bulletin LMENBR2302)

•MX Installation Manual (Bulletin LMENIM2306)

The latest revisions to these documents are available on-line from Flowserve Limitorque’s website,

www.flowserve.com or at www.limitorque.com

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

2 MX Actuator Subassembly

Figure 2.1 – Typical MX Actuator
1	11

3

2

5

6

4

14

			7
Note: MX-05 with B4 base shown			3
9	10	13	8

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

2.1  MX Actuator Subassembly Components

Table 2.1 – MX Actuator Subassembly Components

No. Description

1Top-mounted handwheel

2Drive sleeve

3Worm shaft

4Motor

5Declutch lever

6Encoder

7Control panel (CP)

8Control module

9Optional bases Thrust base type

•A1 = Standard thrust base

•A1E = Extended-reach thrust base

10Baseplate-type B4 with stem nut options type:

•B4 = stem nut with variable bore and key

•B4E = extended-reach stem nut with variable bore and key

•BL = splined stem nut (SAE or Involute)

11	Handwheel adapter/handwheel worm gear
12	Side-mounted handwheel (not shown, but available for the MX-10, -20,-85, -140, and -150)
13	Encoder drive cartridge
14	Terminal block

2.1.1  Product Description

Your MX actuator controls the opening and closing travel of valves and other actuated devices. OPEN and CLOSED limits are protected by an absolute encoder that provides optical sensing of valve position and measures valve position in both motor and handwheel operation. No battery or backup power supply is required. Output torque is derived from motor speed, temperature, and voltage. If the preset torque is exceeded, the motor shuts off. As a result of this reliable and advanced protection technology, all valve and other actuated devices are protected from potential damage from overload, improper seating, and foreign obstructions.

A range of control and network options is available and can be easily added to the control capabilities already available on a standard actuator. Contact your local Limitorque distributor or Limitorque sales office for further information.

2.1.2  Storage

Storage Recommendations

Your MX actuator is double-sealed and weatherproof as shipped, providing all compartment covers and cable entry plugs are left intact. Actuators should be stored in a clean, dry, protected warehouse until

4 ready for installation. If actuators must be stored outdoors, they should be stored off the ground, high enough to prevent being immersed in water or buried in snow.

Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

If your unit incorporates a rising stem application, it may be shipped with a plastic cap over the drive sleeve. If so, install a pipe plug or protective stem cover to protect the drive sleeve from possible corrosion.

Preferred Storage Orientation

Your MX actuator should be stored with the motor and terminal compartment in the horizontal position to obtain optimum service life.

2.1.3  Unit Weights

Table 2.2 – Unit weights

Unit	lb.	kg
MX-05		24
	52
MX-10	65	29
MX-20	109	49
MX-40	133	60
MX-85	259	117
MX-140	300	136
MX-150	410	186

NOTE: Weights include stem nut and lubricant.

2.2  Product Identification

2.2.1  Initial Inspection and Recording Suggestions

Upon receipt of the actuator, several steps should be initially followed to ensure condition of equipment and to establish proper record keeping.

1.After removing the actuator from the shipping carton or skid, thoroughly examine it for any physical damage which may have occurred during shipment. If you note any damage, immediately report the damage to the transport company and call Limitorque for further assistance.

2.A nameplate with important information is attached to each actuator. Record the following information for use when you need to contact Limitorque with any questions about your actuator:

•Unit type/size

•Flowserve Limitorque order number

•Serial number

Figure 2.2 – MX Nameplate

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

2.3 Maintenance

2.3.1  Recommended Maintenance

Under normal operating conditions, the MX is a maintenance-free actuator. Therefore, for normal applications, no formal actuator maintenance is required although visual inspection for oil leakage and excessive noise is recommended every 1 million drive sleeve turns or every 3000 cycles. When conditions are severe due to frequent operation or high temperatures, inspect the oil level and oil quality more often. Replace any seals that permit oil leakage or water ingress. When installing pipe plugs, use PTFE tape or paste to achieve a proper seal.

2.3.2  Unit Lubrication

Check for proper oil level every 1 million drive sleeve turns (reference Installation and Operation Manual - Diagnostics Section to learn how to view drive sleeve turns data). Change oil every 6000 unit cycles or if water or other foreign material is found during oil inspection.

Oil Level Inspection and Fill Criteria

(Reference Table 2.3 for oil capacities when mounted in varying positions)

• Actuator viewed in upright position (top-mounted handwheel up)

Oil level should be approximately 1 inch (25.4 mm) below the outer surface of the housing at the oil fill port.

NOTE: Do not overfill with oil because oil will expand during actuator operation. Actuators are shipped with an oil volume suitable for any mounting position. When checking the factory-supplied oil level, excess oil may drain from the highest oil fill port due to the various mounting orientations of each application.

•Actuator viewed in side-mounted position (terminal compartment up). Oil level should be up to the bottom of the oil fill plug.

•Actuator viewed in all other positions than described previously should have the oil capacities maintained. Fill through the highest oil fill port until the oil is at a level that will contact the bottom of the pipe plug when installed in oil fill port.

6

Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

Figure 2.3 – Oil Fill/Plug Locations (MX-05 through -40)

t .9 TJEF NPVOUFE

IBOEXIFFM PJM DIFDL PJM mMM

t 0JM ESBJO BMM VOJUT

t .9 UPQ NPVOUFE t .9 UPQ NPVOUFE

IBOEXIFFM PJM DIFDL PJM mMM IBOEXIFFM PJM DIFDL PJM mMM t .9 TJEF NPVOUFE

IBOEXIFFM PJM DIFDL PJM mMM

Figure 2.4 – Oil Fill and Drain Locations (MX-85, -140, and -150)

0JM 1MVH

0JM 1MVH

0JM 1MVH

0JM 1MVH

0JM 1MVH

0JM 1MVH

Lubrication Data

•Oil Specifications: MX actuators are oil-filled using Mobil SHC-632, which is a synthetic oil suitable for ambient temperatures of -22°F to 250°F (-30°C to 120°C). For extreme low temperature conditions, alternative lubricants are available - consult factory for further information.

Table 2.3 – MX-05 and -10 Oil Capacities when using Oil Fill/Plug Ports

Nominal Oil Capacities	oz.	liters
MX-05
	10	0.3
MX-10
	16	.05
			7
MX-20
Top-mounted handwheel with handwheel up	38	1.1
Top-mounted handwheel with terminal compartment up	47	1.4
Side-mounted handwheel with terminal compartment up	43	1.3

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

MX-40

Top and side-mounted handwheel with handwheel up	40	1.2
Top-mounted handwheel with terminal compartment up	53	1.6
Side-mounted handwheel with terminal compartment up	53	1.6
MX-85, -140, and -150
All Configurations	192	5.7

2.3.3  O-Ring and Lubrication

O-rings and seals should be replaced any time an actuator is disassembled. Lubricate with a substance that is compatible with Buna N seals.

2.4  Subassembly Removal

and Remounting Procedures

This manual divides each MX actuator subassembly into a Removal and Remounting procedure. Use the following procedures to remove subassemblies for inspection, repair or replacement. Some subassemblies require prior subassembly removal before allowing the desired subassembly removal. Note the First Remove instructions at the beginning of each subassembly removal procedure. Remove these subassemblies first, and then remove the desired subassembly according to the instructions. Once removed, evaluate subassembly components to determine requirement for a new subassembly. If a new subassembly is required, see Section 2.5. Once components have been identified and replaced, remount following the appropriate Remounting procedures.

2.5  How to Order Replacement Subassemblies

2.5.1  Replacement Parts

Replacement parts are sold in modular subassemblies; therefore, when part replacement is required, order parts at the subassembly levels as shown in this manual. Parts may be ordered from your local Limitorque representative (see www.flowserve.com) or direct from the factory:

Telephone: [phone]

Fax: [phone]

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

Please have the following information, found on the actuator nameplate, available to help us facilitate your order:

•Unit type/size

•Limitorque order number

•Serial number

2.5.2  Return Procedure

When parts are identified for warranty or other component replacement, a Return Material Authorization (RMA) must be obtained from Flowserve. Contact factory for a RMA number (see contact information in section 2.5.1). All returned parts must be accompanied by documentation with the following information to obtain credit for returned goods:

•Return Material Authorization (RMA)

•Unit type/size

•Flowserve Limitorque order number

•Serial number

Return parts to the address listed below:

Limitorque Actuation Systems

5114 Woodall Road

Lynchburg, VA 24502

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

3 Remove Actuator

from Mounting Adapter

3.1  Actuator Removal with Type B1/B4/B4E Base (Torque)

3.1.1  Removal (Type B1/B4/B4E Base)

STEP 1

cWARNING: Hazardous Voltage! Turn off all power sources to actuator before removing actuator from mounting plate. Power sources may include main power or control power. If necessary, disconnect incoming power leads L1, L2, L3, and control wiring from the terminal block.

Remove the bolts that secure the actuator

to the mounting adapter. If type B1 or B4E 1 base is used in addition to the standard type

B4 or B4E baseplate, you may leave the B1 base attached to the mounting adapter and remove the actuator only. Or if required, you may remove the bolts that mount type B1 base to mounting adapter. This will allow actuator removal along with optional B1 base.

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STEP 2

cWARNING: Potential high-pressure vessel! Before disassembling your actuator, ensure that the valve or other actuated device is isolated and is not under pressure.

Lift actuator from mounting adapter.

2

3.1.2  Remounting (Type B1/B4/B4E Base)

STEP 3

Ensure stem nut (#1-22) is secured inside actuator drive sleeve with retaining ring (#1-23). Lower the actuator onto the mating component, making sure to align stem nut key and keyway with mating component.

STEP 4

Ensure that the actuator and mounting adapter flange mating holes are aligned correctly.

3

1-22

1-23

4

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

STEP 5

cWARNING: Hazardous Voltage! Turn off all power sources before rewiring incoming power leads L1, L2, L3, and control wiring in the terminal block.

Secure the actuator to the mounting adapter	5
with mounting bolts.

STEP 6

Reconnect incoming power leads L1, L2, L3, and control wiring to the terminal block. Restore power source when ready for operation.

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3.2  Actuator Removal with Type A1/A1E Base (Thrust)

NOTE: Two procedure options are available for removing the actuator and thrust base:

1.Remove actuator from thrust base, leaving thrust base mounted to mounting flange or removing thrust base separately.

2.Remove actuator and thrust base as a unit from mounting flange.

3.2.1  Removal (Type A1/A1E Base)

Actuator Removal Separate from Thrust Base

STEP 1

cWARNING: Hazardous Voltage! Turn off all power sources to actuator before removing actuator from mounting plate. Power sources may include main power or control power. If necessary, disconnect incoming power leads L1, L2, L3, and control wiring from the terminal block.

Remove the bolts (#10-10) that secure the	1
actuator to the thrust base assembly (#10).

10-10

10

STEP 2

cWARNING: Potential high-pressure vessel! Before disassembling your actuator, ensure that the valve or other actuated device is isolated and is not under pressure.

Lift actuator from thrust base assembly (#10).

2

10

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

STEP 3

cWARNING: Potential for actuated device to change position! The thrust base will maintain position only if non-backdriving thread lead is used. Ensure proper thread lead is used in your application before allowing thrust base to be used for maintaining position when actuator is removed.

Thrust base removal (if required)

The valve position will be maintained if a 3 locking thread lead is used on the valve stem.

If thrust base removal is required, use the following removal procedure.

Remove the bolts that secure the thrust base to the mounting adapter.

STEP 4

Rotate the thrust base (#10) until it feeds off the threaded stem.

4

10

3.2.2  Remounting (Type A1/A1E Base)

Actuator Remounting Separate from Thrust Base

STEP 5

5

Thrust base remounting (if required)

Ensure the thrust base stem nut has the two lugs positioned upward to engage with the drive sleeve slots when actuator is reinstalled onto thrust base. Thread thrust base back onto mounting adapter.

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STEP 6

Secure thrust base to mounting adapter with mounting bolts.

6

STEP 7

Actuator remounting

Lower the actuator onto the thrust base, making sure thrust nut lugs align and properly engage with drive sleeve slots.

STEP 8

Install bolts (#10-10) to secure the actuator to the thrust base assembly (#10).

7

8

STEP 9

cWARNING: Hazardous Voltage! Turn off all power sources before rewiring incoming power leads L1, L2, L3, and control wiring in the terminal block.

Reconnect incoming power leads L1, L2, L3, and control wiring to the terminal block. Restore power source when ready for operation.

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

3.2.3  Removal (Type A1/A1E Base)

Actuator and Thrust Base as a Unit

STEP 1

cWARNING: Hazardous Voltage! Turn off all power sources to actuator before removing actuator from mounting plate. Power sources may include main power or control power. If necessary, disconnect incoming power leads L1, L2, L3, and control wiring from the terminal block.

Actuator and thrust base removal

Remove the bolts that secure the actuator and 1 thrust base (#10) to the mounting adapter.

STEP 2

cWARNING: Potential high-pressure vessel! Before disassembling your actuator, ensure that the valve or other actuated device is isolated and is not under pressure.

Declutch the actuator to manual mode.

2

STEP 3

Rotate the handwheel until the actuator lifts off the threaded stem.

3

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3.2.4  Remounting (Type A1/A1E Base)

Actuator and Thrust Base as a Unit

STEP 4

Actuator and thrust base remounting

4

Declutch the actuator to manual mode. Lift actuator up to the threaded stem and carefully align threads with thrust base threaded stem nut.

STEP 5

Rotate the handwheel to lower the actuator along the threaded stem and onto the mounting adapter plate.

STEP 6

Install the mounting bolts to secure the actuator and thrust base (#10) to the mounting adapter.

5

6

STEP 7

cWARNING: Hazardous Voltage! Turn off all power sources before rewiring incoming power leads L1, L2, L3, and control wiring in the terminal block.

Reconnect incoming power leads L1, L2, L3, and control wiring to the terminal block. Restore power source when ready for operation.

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Limitorque MX Maintenance and Spare Parts  FCD LMENIM2314-00 – 07/08

4 Mechanical Assemblies

4.1  Motor

NOTE: Proper motor testing is required when replacing motor. Consult your Limitorque representative or the Limitorque factory to replace with correct motor.

Table 4.1 – Motor Parts List

Part Number	Description	Qty.
4-1	Motor cover	1
4-2	Stator	1
4-3	Rotor assembly	1
4-4	Bearing	1
4-8	Bearing preload spring	1
4-9	Setscrew	1
Figure 4.1 – Motor (MX-05, -10, -20, and -40)
	4-1
	4-2		A
			Assembly must have
			rotation of rotor as shown.
	4-3		Phase connections are:
			T1-Phase 'A'
4-8			T2-Phase 'B'
	Motor		T3-Phase 'C'
	leads
4-4			A
	View A-A
		4-9	19

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4.1.1  Removal

STEP 1

cWARNING: Hazardous Voltage! Turn off all power sources to actuator before removing motor assembly. Power sources may include main power or control power.

Using an M6 hex key, remove the four M8

screws (#1-14) that mount the motor assembly 1 to the MX-05 through MX-40 actuator.

MX-85 requires an M8 hex key and uses an

M10 screw.

1-14

STEP 2

aCAUTION: The rotor is not connected to the motor housing; when removing the motor, ensure the rotor is carefully removed and not dropped from the motor housing.

Withdraw the complete motor (subassembly #4), including the rotor (#4-3), until the wiring harness is accessible. Note the O-ring (#1-15) on the spigot/pilot of the motor assembly; replace at remounting.

STEP 3

Disconnect the motor power plug from the motor power socket connector.

2

4-3

1-15

3

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4.1.2  Remounting

STEP 4

cWARNING: Hazardous Voltage! Turn off all power sources to actuator before removing motor assembly. Power sources may include main power or control power.

Lightly lubricate the O-ring (#1-15) that is installed around the motor spigot/pilot (subassembly #4).

STEP 5

Hold the motor assembly (housing/stator/rotor) close to the actuator housing and reconnect the motor power plug to the motor power socket connector.

4

1-15

5 Motor Power

Socket

Connector

Motor Power

Plug

STEP 6

Coil the spiral-wrapped motor power wiring inside the motor cavity and around the motor bearing housing to ensure that it does not come into contact with the rotor shaft.

6

MX-05 through -40 motor wiring will wrap around about 360°. MX-85/140/150 motor wiring will wrap around about 180°.

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STEP 7

Push the rotor shaft onto the protruding worm shaft, aligning the rotor shaft slots with the worm shaft pin. Slide the motor housing spigot/pilot into the actuator housing.

7

STEP 8

Fit the four screws (#1-14) into the motor subassembly mounting holes and tighten.

8

1-14

4.1.3Removal and mounting of MX-140 motor (40 RPM and greater)

Table 4.2 – Motor Parts List

Part Number		Description	Qty.
1-14		Socket head cap screw
			4
1-15		O-ring	1
4-7		Motor	1
4-8		Adapter, motor	1
4-9		Socket head cap screw	4
4-10		O-ring	1

Figure 4.2 – Motor and Adapter (MX-140)

MAIN UNIT ASSEMBLY

4-8 1-14

4-10

1-15

22

4-7

4-9