Liquid Controls M-25 - User Manual

Other manuals for Liquid Controls M-25

Installation Manual15 pages

Questions and Answers

P
Pamela CamposAug 16, 2025
What to do if there is no flow through Liquid Controls M-25 Measuring Instruments?
- E
  Eric BarnesAug 16, 2025
  If your Liquid Controls Measuring Instruments meter is not flowing any product, there might be a few reasons. It could be due to a faulty or non-functioning pump, a valve that is not open or not working correctly, or the meter might be 'frozen' because of chemical 'salts' or foreign material buildup inside the metering chamber. Consider cleaning the meter and inspecting for any damage.
B
bbakerAug 22, 2025
Why is my Liquid Controls M-25 Measuring Instruments meter running too slowly?
- M
  Mr. Nathaniel RussellAug 22, 2025
  If your Liquid Controls Measuring Instruments meter runs too slowly, several factors could be the cause. The valve's internal mechanism might be faulty, preventing it from fully opening. Also, the meter gears or rotors could be partially 'salted', which slows down the rotation of parts. Cleaning the meter might help. Another potential cause could be a downstream restriction or a clogged strainer basket.
P
Paul JonesAug 25, 2025
How to stop leakage from the cover gasket on Liquid Controls Measuring Instruments?
- J
  Jessica BennettAug 26, 2025
  If you observe leakage from the cover gasket of your Liquid Controls Measuring Instruments, it might be because the gasket has been damaged due to shock pressure, or the cover bolts haven't been tightened sufficiently. Replace the gasket and ensure the cover bolts are correctly tightened.
E
emily75Aug 27, 2025
How to fix leakage past packing gland drive shaft housing in Liquid Controls Measuring Instruments?
- H
  hillrandyAug 27, 2025
  If you notice leakage past the packing gland drive shaft housing from the internal metering chamber in your Liquid Controls Measuring Instruments, it's likely that the internal seal of the packing gland assembly is worn. Replace the packing gland and O-ring seal.
D
Derek AtkinsAug 30, 2025
Why are teeth breaking on timing gears in Liquid Controls M-25?
- M
  Maria SmithAug 30, 2025
  If the teeth on the timing gears of your Liquid Controls Measuring Instruments are breaking, it could be due to starting or stopping the flow in the meter too rapidly, or the pump bypass not being adjusted properly.
R
Rebecca OrtizSep 2, 2025
How to fix the Liquid Controls M-25 when it counts down in reverse?
- A
  amandamosleySep 2, 2025
  If the Liquid Controls Measuring Instruments meter counts down in reverse, reverse the direction of flow by reversing the adjuster drive gear.
D
Derek DoyleSep 4, 2025
What to do if there is leakage from the cover gasket of Liquid Controls Measuring Instruments?
- K
  Kendra ChenSep 5, 2025
  If you observe leakage from the cover gasket of your Liquid Controls Measuring Instruments, it's likely that the gasket has been damaged due to shock pressure or the cover bolts haven't been tightened sufficiently. Replace the gasket and ensure the cover bolts are correctly tightened.
C
Christopher NicholsSep 7, 2025
Why is there no flow through my Liquid Controls Measuring Instruments?
- M
  mcmillantammySep 7, 2025
  If the Liquid Controls Measuring Instruments has no flow, this could be due to a faulty non-functioning pump or a valve that is not open or not functioning.
K
kimhughesSep 10, 2025
What to do if product flows through Liquid Controls M-25 but the register doesn't operate?
- T
  thomashectorSep 10, 2025
  If product flows through the Liquid Controls Measuring Instruments meter but the register does not operate, check the packing gland and gear train. A faulty register should be checked and repaired by a trained mechanic. Also, replace the packing gland, as this may be caused by starting the flow too rapidly.
A
adampalmerSep 10, 2025
How to fix if Liquid Controls M-25 Measuring Instruments meter counts down in reverse?
- M
  Mr. Calvin ChenSep 12, 2025
  If your Liquid Controls Measuring Instruments meter counts down in reverse, you should reverse the direction of flow by reversing the adjuster drive gear.

Summary

Safety Procedures

Be Prepared for Operation

General readiness steps before operating the meter, including reading instructions and using proper equipment.

Safely Evacuate Piping System

Procedures for safely relieving pressure and draining liquid from the system before disassembly.

Observe National and Local Codes

Installation & Operation

How LC Meters Work

Installation Requirements

Critical steps, codes, and precautions necessary for correct meter installation.

Operation Requirements

Essential guidelines and conditions for operating the meter correctly to ensure performance and safety.

Meter Start Up and Operation

Procedures and cautions for safely priming, starting up, and operating the meter.

Maintenance

Maintenance Requirements

Key considerations and precautions for performing meter maintenance, including pipe strain and storage.

Servicing the Drive Components

Disassembling the Meter

Step-by-step guide for taking apart the meter, including rotor gears and bearing plates.

Reassembling the Meter

Instructions for correctly putting the meter back together, including rotor timing and cover tightening.

Troubleshooting

Packing Gland Leakage

Product Flow, No Register Operation

No Flow Through Meter

Liquid Controls M-25 Specifications

General

Model	M-25
Category	Measuring Instruments
Type	Positive Displacement Flow Meter
Operating Pressure	150 PSI
Pressure Rating	150 PSI
Operating Temperature	-40°F to +160°F
Temperature Range	-40°F to +160°F (-40°C to +71°C)
Materials of Construction	Aluminum, Stainless Steel
Output	Pulse