Fluid-components-international MT91 Manual Troubleshooting User Manual download pdf

Doc. No. 003185 Rev. B 5 - 1

Model MT91 Multipoint Flowmeter

CHAPTER 5 - TROUBLESHOOTING FLUID COMPONENTS INTL

5. Troubleshooting

Warning:

Only qualified personnel should attempt to test this device. The operator assumes all

responsibilities for safe practices while troubleshooting.

Caution:

The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD

precautions when handling the flow transmitter. See Chapter 2, Installation for ESD details.

Quick Check

Use Table 5-1 as a quick check of problems and solutions. More in-depth discussions follow this table.

Table 5-1. Quick Check Troubleshooting

Problem Solution

No Display Check fuses. Verify correct power is applied.

Verify the ribbon cable between the backplane board J18 and the display J1 is

solidly connected and the red stripe is at pin 1. See Figures 2-3 and 2-4.

No Display or Dim Display Adjust potentiometer R1 (located on display board) clockwise (10 turns

maximum) until display appears. See Figures 2-3.

Display is locked up Cycle the input power or press any key for more than 10 seconds.

Incorrect Readings Verify that all ribbon cables are firmly seated. See Figure 2-3 and 2-4.

Non-maintenance Observations

At this point, simply observe the system setup to verify operation. No disassembly or testing is required at this time.

Check Serial Numbers

Verify that the serial number of the flow elements and the flow transmitter are the same. The flow elements and the

flow transmitter are a matched set and cannot be operated independently of each other.

Check Input Power

Verify that the correct power source is turned on and connected.

Check the Unit Installation

Review the information on instrument installation in Chapter 2 to verify correct mechanical and electrical

installation. Verify that all ribbon cables are seated firmly.

Relay Output Board J1 Þ Backplane Board J21 and/or J22

Analog Output Board J1 Þ Backplane Board J19

Display Board J1 Þ Backplane Board J18

Check for Moisture

Check for moisture on the flow transmitter. Moisture on the flow transmitter may cause intermittent operation.

1 2 3 4 5 6

Summary of Contents

Page 1 - 5. Troubleshooting

Doc. No. 003185 Rev. B 5 - 1 Model MT91 Multipoint FlowmeterCHAPTER 5 - TROUBLESHOOTING FLUID COMPONENTS INTL5. TroubleshootingWarning:Only q

Page 2 - ( )

FLUID COMPONENTS INTL CHAPTER 5 - TROUBLESHOOTINGModel MT91 Multipoint Flowmeter 5 - 2 Doc. No. 003185 Rev. BCheck Application Design RequirementsApp

Page 3 -

Doc. No. 003185 Rev. B 5 - 3 Model MT91 Multipoint FlowmeterCHAPTER 5 - TROUBLESHOOTING FLUID COMPONENTS INTLVerify LimitsIf there is a no flo

Page 4 - Backplane Board

FLUID COMPONENTS INTL CHAPTER 5 - TROUBLESHOOTINGModel MT91 Multipoint Flowmeter 5 - 4 Doc. No. 003185 Rev. BPin Number Approximate Resistance2 to 3

Page 5 - Þ Output TestsÞ Relay Test)

Doc. No. 003185 Rev. B 5 - 5 Model MT91 Multipoint FlowmeterCHAPTER 5 - TROUBLESHOOTING FLUID COMPONENTS INTL3, but not to Table 5-2, the cabl

Page 6 - Customer Service

FLUID COMPONENTS INTL CHAPTER 5 - TROUBLESHOOTINGModel MT91 Multipoint Flowmeter 5 - 6 Doc. No. 003185 Rev. B1. Go to menu level 3.3.1 (DiagnosticsÞ

Comments to this Manuals

No comments

Fluid-components-international MT91 Manual Troubleshooting User Manual

Browse online or download User Manual for Equipment Fluid-components-international MT91 Manual Troubleshooting. Fluid Components International MT91 Manual Troubleshooting User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Equipment Fluid-components-international MT91 Manual Troubleshooting