Microfluidics Microfluidizer LM20 User manual

©Copyright 2015 •All Rights Reserved •Printed in U.S.A.
LM20 Microfluidizer™ Processor
User Manual
90 Glacier Drive
Suite 1000
Westwood, MA 02090
Phone [phone]
Fax [phone]
www.microfluidicscorp.com

MANUAL.LM20 Revision C January 2023 Page 2 of 52
Important Information
◊This equipment is intended to operate between 50°F-80°F (10°C - 26°C).
◊The Microfluidizer processor is NOT designed to operate in an environment that contains explosive
fumes or other flammable or hazardous conditions.
◊This system is capable of normal operation under voltages listed on nameplate.
◊Equipment is capable of operation within a humidity range of 30% to 80% (noncondensing).
◊Equipment is capable of operation at altitudes up to 1000M above sea level.
◊Wear appropriate personal protection devices when operating and servicing equipment.
◊Read and understand this manual before operating equipment. Contact Microfluidics Customer
Service with any questions.
◊Equipment must be properly maintained and serviced.

MANUAL.LM20 Revision C January 2023 Page 3 of 52
Contents
Important Information................................................................................................................................. 2
Revision History ............................................................................................................................................ 6
Model Specifications.................................................................................................................................. 7
Chapter 1: Introduction ................................................................................................................................ 8
1.1 Inside this Manual............................................................................................................................... 8
1.2 Disclaimers .......................................................................................................................................... 8
1.2.1 Design Change.............................................................................................................................. 8
1.2.2 Reproduction ............................................................................................................................... 8
1.2.3 Shipping........................................................................................................................................ 8
1.3 Customer Support............................................................................................................................... 8
1.4 Warranty ............................................................................................................................................. 8
Chapter 2: Overview ..................................................................................................................................... 9
2.1 General Description ............................................................................................................................ 9
2.2 Major Components ............................................................................................................................. 9
2.3 Principle of Operation......................................................................................................................... 9
2.4 Component Descriptions ..................................................................................................................10
Chapter 3: Operation .................................................................................................................................. 12
3.1 Safety Warnings & Cautions .............................................................................................................12
3.2 Supplied Items...................................................................................................................................13
3.3 Items Not Supplied............................................................................................................................ 13
3.4 Site Preparation ................................................................................................................................ 14
3.4.1 Foundation ................................................................................................................................. 14
3.4.2 Clearances.................................................................................................................................. 14
3.5 Moving the Equipment ..................................................................................................................... 15
3.6 Utility Requirements ......................................................................................................................... 15
3.6.1 Electrical Supply ......................................................................................................................... 15
3.7 Environmental Requirements ...........................................................................................................15
3.7.1 Temperature ..............................................................................................................................15
3.7.2 Ventilation Requirements.......................................................................................................... 15
3.8 Preparing for First Use ...................................................................................................................... 15

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3.8.1 Hydraulic System........................................................................................................................ 15
3.8.2 Utility Hookups........................................................................................................................... 15
3.8.3 Assembly .................................................................................................................................... 16
3.8.4 Preparing Processor for Operation ............................................................................................16
3.9 Operating the Equipment .................................................................................................................16
3.9.1 Prime the Intensifier Pump........................................................................................................ 17
3.10 Cleaning and Storing the Equipment ..............................................................................................17
3.11 Using the Emergency Stop ..............................................................................................................18
3.12 Operator Interface ..........................................................................................................................18
3.12.1 Home Screen............................................................................................................................18
3.12.2 Info Screen ...............................................................................................................................19
3.12.3 Alarm Screen............................................................................................................................ 20
3.12.4 Language Screen ......................................................................................................................21
Chapter 4: Maintenance .............................................................................................................................22
4.1 Pump and Plunger Seal Assembly..................................................................................................... 22
4.1.1 Removing the Pump Body..........................................................................................................22
4.1.2 Removing the Bearing Retainer and Bearing............................................................................. 23
4.1.3 Removing the Plunger Seal and Back-Up Ring........................................................................... 23
4.1.4 Removing the Plunger................................................................................................................24
4.1.5 Cleaning Components ................................................................................................................ 25
4.1.6 Installing the Plunger .................................................................................................................25
4.1.7 Installing the Isolator ................................................................................................................. 25
4.1.8 Install New Plunger Seal and Back-Up Ring ............................................................................... 26
4.1.9 Install the Bearing and Bearing Retainer ...................................................................................26
4.1.10 Install the Pump Body .............................................................................................................. 26
4.2 Check Valve Maintenance................................................................................................................. 27
4.2.1 Cleaning with MPPC................................................................................................................... 27
4.2.1 Repairing Inlet Check Valve........................................................................................................ 28
4.3 Replacing Hydraulic Oil ..................................................................................................................... 29
4.3.1 Servicing Hydraulic Suction Strainer .......................................................................................... 29
4.4 High Pressure Connections .........................................................................................................30

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4.5 Charging Hydraulic Accumulator ................................................................................................30
Chapter 5: Troubleshooting ........................................................................................................................ 32
5.1 Monitoring The Flow Rate .......................................................................................................... 32
5.2 Unplugging The Chamber(s)........................................................................................................32
5.3 Maintaining Connections & Fittings............................................................................................ 32
5.4 Symptom and Remedy Table.................................................................................................33
5.5 Fault Tree........................................................................................................................................34
5.6 Error Codes .................................................................................................................................... 37
Appendix A: Tool Kit ................................................................................................................................38
Appendix B: Options / Spare Parts........................................................................................................ 39
Appendix C: Drawings............................................................................................................................. 40
Appendix D: Fluid Compatibility Tables................................................................................................ 41
D.1 The Elastomers ............................................................................................................................. 41
D.2 The Plastics ...................................................................................................................................41
D.3 Table of Compatibility...................................................................................................................43
Appendix E: CE Information ...................................................................................................................50
Appendix F: Maintenance Schedule ..................................................................................................... 51

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Revision History
REVISION
DATE
DESCRIPTION OF CHANGES
A
2015
•Initial release
B
2020
•Updated based on design changes
C
Jan-2023
•Updated graphics (section 2.4)

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Model Specifications
Maximum Product Process Pressure (LM20-20)
20,000 psi (1,379bar)
Maximum Product Process Pressure (LM20-30)
30,000 psi (1,585bar)
Process/Hydraulic Pressure Ratio
21 : 1
Plunger Stroke Length
2.5" (6.35cm)
Plunger Seal Material
UHMWPE
Plunger Diameter
0.437” (1.1cm)
Approx. Stroke Displacement
0.375 in3 (6.0mL)
Min. Product Inlet Pressure
Gravity
Approximate Unit Dimensions (LxWxH)
26" x 33" x 23"
(66cmm x 84cm x 58cm)
Approximate Unit Weight
230lbs (104kgs)
Check Valve Torque
See Drawings
Electrical Supply (3 Phase)
208-230/460V, 60Hz OR
190-220/380-415V, 50Hz
Noise Level
<75dB TWA
Hydraulic Oil Capacity
1.25 Gal (4.7L)
Hydraulic Accumulator Nitrogen Charge (LM20-20)
1100 psi (75 bar)
Hydraulic Accumulator Nitrogen Charge (LM20-30
1400 psi (96.5 bar)
Maximum Hydraulic Oil Temperature
150 °F (65°C)
Minimum Sample Size (approximate)
12 mL
Maximum Ambient Air Temperature
50 – 80°F (10 - 26°C)

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Chapter 1: Introduction
1.1 Inside this Manual
This manual is intended as a guide for the operator of the LM20 MicrofluidizerTM Processor. It contains 5
chapters and 5 appendices. Chapter 1 gives an introduction to this manual and how to find additional
support, and includes our Warranty. Chapter 2 describes a general overview of the MicrofluidizerTM
Processor with a description of the specific parts of the machine for operation. Chapter 3 explains proper
installation and operation procedures. Chapter 4 contains a general description of the maintenance of the
LM20 MicrofluidizerTM Processor. Chapter 5 contains troubleshooting information which will help you
obtain the best possible results with your processor. The appendices include a parts list, fluid compatibility
tables, a drawings list, an options list, as well as the recommended maintenance schedule.
1.2 Disclaimers
Design changes and product improvements may subject information in this manual to change without
notice. Microfluidics reserves the right to change the design at any time, which may subsequently affect
the contents of this manual.
1.2.1 Design Change
Microfluidics will make every reasonable effort to ensure that this User’s Manual is up-to-date and
corresponds with your LM20 MicrofluidizerTM processor.
1.2.2 Reproduction
Neither this manual nor any part of it may be reproduced, photocopied, or electronically transmitted in
any way without the advanced written permission of Microfluidics International Corporation.
1.2.3 Shipping
Microfluidics is not responsible for damage to equipment occurring during shipping and only furnishes
replacement parts against a written purchase order. It is the customer’s responsibility to file a claim with
the carrier.
1.3 Customer Support
The information given here is general. Some applications may require additional procedure or equipment
modification. For further assistance, feel free to contact the Customer Service Department at Microfluidics
1-800-370-5452. Hours are 8:30 A.M.- 5:00 P.M., E.S.T., Monday through Friday.
1.4 Warranty
The sole warranty provided by Microfluidics International Corporation is contained in the "Microfluidics
Corporation Standard Terms and Conditions", Form M-5 provided at time of purchase.

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Chapter 2: Overview
Chapter 2 includes detailed information about the principle of operation, pneumatic power system, high
pressure intensifier, interaction chamber and auxiliary processing module, controls, and system
specifications.
2.1 General Description
Microfluidics’ LM20 MicrofluidizerTM Processor is designed for the high-performance micro-mixing of
emulsions and dispersions in a variety of industries. The LM20 model is specifically designed to suit
laboratory environments.
2.2 Major Components
The LM20 MicrofluidizerTM Processor is made up of the following major components:
•Hydraulic Power System, which drives the intensifier pump.
•High Pressure Intensifier Pump, which multiplies the pressure supplied from hydraulic power system
to an optimal operating level.
•Interaction Chamber (IXC) which is where size reduction of the product occurs; the product is
accelerated to a high velocity and is subjected to intense shear and impact.
•Auxiliary Processing Module (optional) to provide further control over processing of the product.
•Heat Exchanger (optional) to reduce the temperature of the product as it exits the system.
2.3 Principle of Operation
Power for the LM20 MicrofluidizerTM is generated by an on-board hydraulic power system. This system
supplies pressurized hydraulic oil to a single acting intensifier pump. The intensifier pump amplifies the
hydraulic pressure and transfers it to process the sample. Working pressures up to 30,000 (2069 bar) can
be achieved. During the suction stroke, the intensifier pump draws product from the inlet reservoir into
the pressure chamber via the inlet check valve. During the power stroke, the check valve closes and the
product stream is elevated to a constant pressure level. The pressurized product stream enters the
interaction chamber and passes through geometrically fixed micro channels, causing it to accelerate to
very high velocities. It is here that the product stream is acted upon by two primary forces, which bring
about the desired results:
•Shear - deformation of the product stream; occurring from contact with channel walls at high
velocity.
•Impact - collision; occurring when the high velocity product stream impinges upon itself.
A heat exchanger (optional) reduces the product stream temperature after product passes through the
Interaction Chamber.

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2.4 Component Descriptions
17
16
9
8
15
13
12
7
10
11
6
14
5

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Figure 1 – LM20 Overview Diagram – shown with optional accessories
Standard Features (shown in Figure 1):
1. Machine Name Plate: Details model information and serial number.
2. Cover Fasteners: Secures the cover to the base plate.
3. Air Ventilation Inlet: Air inlet for the hydraulic cooling system. Do not obstruct air path, or system
damage will occur.
4. Access Cover for Accumulator: Removing this cover will provide access to the hydraulic accumulator.
5. Power Disconnect: Lockable electrical power disconnect switch.
6. Power Cord: 10 feet (3m) cable. Customer responsible for wiring into power supply.
7. Air Ventilation Outlet: Air outlet for the hydraulic cooling system. Do not obstruct the air path or
system damage will occur.
8. Emergency Stop: Emergency Stop button. Push to stop, twist to reset.
9. Touch Screen Interface: Human machine interface (HMI). Used to control machine functions, set
pressure, turn intensifier and motor on/off.
10. Interaction Chamber: location of the geometrically fixed micro channels.
11. Intensifier Pump Head: Location of pressure intensification.
12. Access Cover for Oil Reservoir: Removing this cover will provide access to the hydraulic oil reservoir.
13. Inlet Reservoir: Glass reservoir (standard). Fill with preprocessed material.
14. Product Outlet: Post-processed material exits the system.
1
2
3
4

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Optional Features:
15. Cooling Bath: Includes cooling coil. Allows product to be cooled after processing.
16. Product Outlet: Post-processed material exits the system here when using the cooling bath option
17. Cooling Bath Drain: Spigot drain for cooling bath cooling fluid.
Chapter 3: Operation
3.1 Safety Warnings & Cautions
! "WARNING" indicates that if a specific procedure or practice is not followed correctly, bodily injury
could occur.
!"CAUTION" indicates that if a specific procedure or practice is not observed, damage to the equipment
could result.
The MicrofluidizerTM Processor you have purchased, rented or leased is carefully engineered and tested.
Using it involves the handling of fluids at high pressure. Therefore, certain precautions must be taken. DO
NOT proceed with this chapter until you read and understand the introduction and have completed the
necessary installation requirements. Refer to chapter 2 "Overview", to identify individual parts.
! WARNING: NEVER TIGHTEN FITTINGS OR ADJUST THE MICROFLUIDIZERTM EQUIPMENT WHILE IT IS
UNDER PRESSURE OR WHEN IT IS RUNNING.
! WARNING: DO NOT USE DAMAGED MICROFLUIDIZERTM PPROCESSOR EQUIPMENT OR EQUIPMENT
THOUGHT TO BE DAMAGED. ALWAYS USE MICROFLUIDICS GENUINE PARTS.
! WARNING: DO NOT RESTRICT OR DEAD-END PIPING AFTER THE INTERACTION CHAMBER. BODILY
INJURY COULD OCCUR.
! WARNING: USE PROPER PERSONAL PROTECTION DEVICES WHILE OPERATING THE MICROFLUIDIZERTM
PROCESSOR. ALWAYS WEAR SAFETY GLASSES.
! CAUTION: Do not attempt to lift the MicrofluidizerTM equipment by any of the mounted components.
Serious personal injury and/or damage to the equipment could result. The Microfluidizer™Processor
weighs approximately 230 LBS (104KG).

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! WARNING: THIS EQUIPEMNT CONTAINS A NITROGEN CHARGED HYDRAULIC ACCUMULATOR. IT MUST
BE DISCHARGED BEFORE SHIPPING AND BEFORE SERVICING ANY HYDRAULIC COMPONENT.
! WARNING: DO NOT RESTRICT OR DEAD-END PIPING WITH BODY PARTS. BODILY INJURY COULD OCCUR.
! CAUTION: If the Microfluidizer™Processor is not going to be used for more than one month, then the
accumulator nitrogen gas must be discharged and recharged prior to the next use.
! CAUTION: This equipment is shipped WITHOUT hydraulic oil in the reservoir. Users MUST fill the
reservoir with hydraulic fluid that has been filtered through a 10 micron filter before using the equipment
(oil is included in tool kit). DO NOT start the motor without ensuring that a sufficient level of hydraulic oil
is in the tank. Damage to the pump could result. During oil fill, eye protection must be worn.
! CAUTION: The accumulator must be charged before the machine can be operated. See section on
accumulator charging. During charging, eye protection must be worn.
! CAUTION: Do not obstruct the air vents. Damage to the hydraulic components could result.
3.2 Supplied Items
The LM20 MicrofluidizerTM processor comes complete with:
•High-Pressure Intensifier Pump, single acting.
•Interaction Chamber design type to fit your process.
•300mL glass inlet reservoir.
•Power cord to connect the processor to power utilities.
•Tool Kit with all special tools necessary to service the LM20.
•Spare Parts Kit with basic parts needed to service the LM20.
•Drawings of components for ease of ordering replacement parts.
3.3 Items Not Supplied
The following items are NOT supplied with the unit:
•Power Cord Plug. The end user is responsible for installing a plug to suit local electrical regulations
on the end of the LM20’s power cord.
•Nitrogen Charging Kit. The nitrogen charging kit is available from your local Microfluidics
representative with the correct local nitrogen adapter. Kits are available for purchase from
Microfluidics, contact Microfluidics Customer Service.

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Figure 2- Site Preparation
3.4 Site Preparation
•Locate the desired operating site and prepare sufficient space for the equipment (refer to Figure 2).
•Never place base plate directly on flat surface, always operate unit with the 4 leveling machinery feet
provided to allow air exhaust to vent properly.
•Ensure that the proposed operating site meets all the environmental specifications listed in this
chapter (section 3.7).
•Make available sufficient electric sources then connect all utilities to the system (refer to section 3.6).
NOTE: Check the shipping container and its contents for damage. If damage is suspected, notify
both the carrier and MFIC immediately on the straight bill of landing (supplied by the
carrier). If any damage is found, you may request an inspection by the carrier. Such
requests should be made as quickly as possible.
•Compare the contents of the packing list against the contents of the shipping container, to ensure
receipt of all components.
NOTE: We recommend saving the shipping container for possible future use.
3.4.1 Foundation
The foundation of the proposed operating site MUST be able to support the gross weight of the
MicrofluidizerTM equipment. The equipment MUST be placed on a flat level surface.
3.4.2 Clearances
A minimum clearance of 12 inches (30 cm) around all sides of the MicrofluidizerTM equipment is required.
Do not obstruct the air vents; always operate with the leveling machinery feet installed. See Figure 2.

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3.5 Moving the Equipment
Care shall be taken when moving the processor. Only lift from the bottom base plate, do not lift from any
mounted or attached components. Make certain a lifting device is rated for the maximum weight of the
equipment (including accessories).
3.6 Utility Requirements
3.6.1 Electrical Supply
Electrical requirements vary by location. Consult the model specification section for compatible electrical
supply. The Microfluidizer™Processor must be properly electrically connected according to national and
local electrical codes. The end user must supply secondary branch protection for the MicrofluidizerTM
Processor as required by local codes.
3.7 Environmental Requirements
3.7.1 Temperature
Avoid placing the MicrofluidizerTM Processor in an area where ambient temperature is above -80ºF (26ºC)
or below 50ºF (10ºC).
3.7.2 Ventilation Requirements
The MicrofluidizerTM equipment vents air to the surrounding environment. The customer must provide
adequate ventilation, and ensure that the venting is not restricted. The vented air will be warm and as
such surfaces nearby must be compatible with this temperature.
3.8 Preparing for First Use
This section should be followed for preparation of the MicrofluidizerTM Processor during new machine
start up. This section can also be followed after long term storage.
3.8.1 Hydraulic System
1. Fill hydraulic reservoir with oil. Fill to the top mark on the dip stick. Filter with a 10 micron filter
during filling. It will take approximately 1 gal (3.6 L) to fill.
2. Charge hydraulic accumulator with nitrogen. See section 4.5 for instructions.
3.8.2 Utility Hookups
1. Connect the electrical utility to the processor.
2. Ensure local electrical utility supply meets processor requirements.
3. Verify motor is wired for high or low voltage using motor nameplate.
4. Verify motor starter overload is rated for motor nameplate.

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3.8.3 Assembly
Assemble optional and/or shipped loose components to the LM20
1. The inlet reservoir should be assembled. The O-Ring for the glass reservoir must be lubricated
prior to installing the glass reservoir into the metal adapter.
2. Chamber and piping should be assembled. Tighten all high pressure fittings per applicable
drawing contained in the turn over documentation.
3.8.4 Preparing Processor for Operation
1. Turn on the electrical disconnect switch. Allow the system 30 seconds to power on.
2. Fill the inlet reservoir with water.
3. Check for proper hydraulic oil level in the oil reservoir.
4. Check accumulator for nitrogen charge.
! CAUTION: Do not operate the LM20 with low oil level. System damage will occur.
1. Turn on electric motor.
2. Turn on intensifier.
3. Check motor rotation. The hydraulic pressure gauge will build pressure. If no pressure is
indicated, make sure snubber valve is open.
4. If the motor is rotating in the wrong direction, change any 2 of the 3 power leads.
! WARNING: REMOVE ALL ELECTRICAL POWER FROM MICROFLUIDIZER BEFORE CHANGING THE
ELECTRICAL WIRING.
5. Prime the pump. See section 3.9.1
6. Set process pressure to 10,000 psi.
7. Run the system for 5 minutes to purge the hydraulic system of air. Keep the inlet reservoir full of
water during this time. If the pump runs dry, it will be necessary to repeat the priming
instructions.
8. The processor is now ready for operation.
3.9 Operating the Equipment
1. Check proper utilities are available and connected to the processor.
2. Ensure the Product Inlet Reservoir is filled.
3. Turn on the electric motor with the “Motor On” button.
4. Prime the intensifier pump. See section 3.9.1
5. Input the desired process pressure on the operator interface screen.
6. Press the “Start Intensifier” button on the operator interface screen. The intensifier pump will
start cycling.
NOTE: The liquid that was inside the equipment after last use may still be present at this point
and will have to be eliminated first.
7. After desired volume of product has been processed or inlet reservoir is empty, press the “Stop
Intensifier” button on the operator interface screen.
8. Turn off the electric motor with the “Motor Off” button.

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NOTE: Do not allow any of the high pressure fitting to leak. Leaking will cause damage to the
sealing surfaces of the joint. If a high pressure fitting is leaking, follow the relevant steps
in the Maintenance section of this manual.
3.9.1 Prime the Intensifier Pump
Priming the intensifier pump is often needed before the first time use, after disassembly, or whenever the
Intensifier Pump loses its prime.
The prime function is achieved by operating the processor at low pressure and manually opening the inlet
check valve.
1. Ensure the inlet reservoir has fluid in it.
2. Set the process pressure to 5000 psi.
3. Insert priming tool into the reservoir and push down the inlet check ball.
4. Start the intensifier pump.
5. Cycle the pump for 2 cycles.
6. Remove the priming tool, liquid should begin to exit the product outlet piping.
7. Stop the intensifier pump.
This completes the prime function.
If the fluid that is being processed is very viscous, the MPPC option may help in priming the pump. Contact
Customer Service to discuss the MPPC option.
If unable to accomplish a prime, see relevant help sections.
3.10 Cleaning and Storing the Equipment
The best cleaning procedure will depend on both the nature of your products and the standards for your
industry. New machines are shipped from our factory thoroughly cleaned with water and rinsed with
isopropanol. The isopropanol, which is then left in the processor, is used because it cuts grease and oil
effectively, yet has limited negative effects on any of the sealing materials used in the equipment. The
interaction chamber, the auxiliary processing module, and all of the small diameter high pressure tubing
can be cleaned by simply pumping a suitable cleaning solution or solvent through the processor as though
it were product. We recommend leaving the processor filled with solvent between uses.
NOTE: Consult the Fluid Compatibility Table in Appendix D.
The user shall determine the best cleaning procedure based on the product and cleaning solution. A
cleaning process is as follows:
1. Add the appropriate cleaning solution liquid to the Product Inlet reservoir.
2. Run processor at a suitable pressure and flow rate to clean internal parts.
3. The product outlet flow should be clean.
4. Stop the processor.
5. To store the processor, it is recommended to fill with appropriate solvent. Cover the inlet
reservoir to avoid large particles from entering.

MANUAL.LM20 Revision C January 2023 Page 18 of 52
3.11 Using the Emergency Stop
At any time when operating the MicrofluidizerTM Processor, pressing the Emergency Stop Button will stop
the intensifier pump and turn off the electric motor, setting the processor to a low energy. To re-set the
E-Stop:
1. Twist the E-Stop Button clockwise. This will reset the button.
2. Acknowledge the alarm(s) on the operator interface screen.
Follow directions in Section 3.9 to restart processor.
3.12 Operator Interface
The operator interface controls the functionality of the processor. It is through this color touch screen
that the operator will start/stop the processor, set the process pressure, and monitor the processor.
3.12.1 Home Screen
Figure 3 - Home Screen
1. Up/Down Arrows. Pressure can be increased/decreased by holding or tapping these butons.
2. Motor Start/Stop. The electric motor is turned on/off with this button.
3. Intensifier Start/Stop. The intensifier pump is turned on/off with this button.
4. Alarm Indication. When illuminated, indicates an alarm condition.
5. Pressure Setting. Clicking the pressure will open a key pad to type in desired pressure. This is
the pressure the LM20 will process at.
2
1
4
1
3
5

MANUAL.LM20 Revision C January 2023 Page 19 of 52
3.12.2 Info Screen
Figure 4 - Info Screen
1. Batch Stroke Counter: The number of strokes during the batch. Use “RESET” button to reset to
zero.
2. Service Stroke Counter: Number of strokes since last qualified service visit. Can only be reset by
trained MFIC representatives.
3. Number of strokes until next service alarm.
4. Total strokes: Lifetime machine stroke counter.
5. Service Alarm Hour Meter: Hours since last qualified service visit. Can only be reset by trained
MFIC representatives.
6. Hours until next service alarm
7. Lifetime Hour Meter: The lifetime hour meter on the LM20
8. PLC Input/Output Status: Lights indicate status of I/O on PLC.
1
2
3
4
5
6
7

MANUAL.LM20 Revision C January 2023 Page 20 of 52
3.12.3 Alarm Screen
Figure 5 - Alarm Screen
1. E-Stop Reset: After twisting the E-Stop button, press the RESET button to completely reset the
E-Stop event.
2. E-Stop Status Light: Red indicates an active E-stop alarm. Green indicates no E-Stop alarm.
3. Alarm Status: Active alarm descriptions will be shown here
4. Back Button: Press this button to return to the previous screen.
1
2
3
4