Liquid Controls M-30 - User Manual

48 pages

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Other manuals for Liquid Controls M-30

Installation Manual15 pages

Questions and Answers

J
James AllenAug 17, 2025
What to do if there is no flow through Liquid Controls M-30 Measuring Instruments?
- B
  benjaminashleyAug 17, 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.
E
Emma MooreAug 19, 2025
How to fix if Liquid Controls Measuring Instruments meter counts down in reverse?
- B
  Bernard WhiteAug 19, 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.
M
Misty VaughanAug 22, 2025
Why is my Liquid Controls M-30 Measuring Instruments meter running too slowly?
- A
  Albert ZimmermanAug 23, 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.
V
Victoria WolfeAug 26, 2025
How to stop leakage from the cover gasket on Liquid Controls M-30 Measuring Instruments?
- A
  Anthony ReynoldsAug 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.
C
Carol HenryAug 28, 2025
How to fix leakage past packing gland drive shaft housing in Liquid Controls Measuring Instruments?
- N
  Nathan LeonAug 28, 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.
T
Tricia AndersonAug 30, 2025
Why are teeth breaking on timing gears in Liquid Controls M-30 Measuring Instruments?
- T
  Tony WongAug 31, 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.
K
Keith FrenchSep 2, 2025
How to fix the Liquid Controls Measuring Instruments when it counts down in reverse?
- H
  Hailey BensonSep 2, 2025
  If the Liquid Controls Measuring Instruments meter counts down in reverse, reverse the direction of flow by reversing the adjuster drive gear.
J
Jeffrey ThompsonSep 5, 2025
What to do if there is leakage from the cover gasket of Liquid Controls M-30 Measuring Instruments?
- R
  Ryan PhillipsSep 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.
J
Justin WardSep 8, 2025
Why is there no flow through my Liquid Controls Measuring Instruments?
- E
  edavisSep 8, 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.
D
David HarrisSep 12, 2025
What to do if product flows through Liquid Controls M-30 Measuring Instruments but the register doesn't operate?
- L
  Lisa SwansonSep 12, 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.

Summary

Resources in this Guide

Publication Updates

Information on obtaining the latest versions of Liquid Controls publications.

Safety Procedures

Owner Information Packet

Inquiries, Orders, and Service

Guidance for making inquiries, ordering parts, or scheduling service.

Serial Plate Locations

Installation & Operation

How LC Meters Work

Explanation of the operational principles and design of LC meters.

Installation Requirements

Operation Requirements

Meter Start Up and Operation

Reversing the Meter Registration

Setting the Standard Adjuster

Maintenance

Maintenance Requirements

Servicing the Drive Components

Disassembling the Meter

Reassembling the Meter

Troubleshooting

How to Order Replacement Parts

Liquid Controls M-30 Specifications

General

Model	M-30
Category	Measuring Instruments
Type	Positive Displacement Flow Meter
Meter Type	Rotary
Repeatability	±0.05%
Operating Pressure	Up to 150 PSI
Temperature Range	-40°F to 160°F
Materials of Construction	Aluminum, Stainless Steel
Output	Pulse output
Meter Size	1 1/2 inch
Connection Type	Flanged

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