Emerson Yarway Welbloc Instruções de instalação, operação e manutenção
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YARWAY COLOR-PORT
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation these instructions must be fully read and understood
TABLE OF CONTENTS
Table of contents ................................................ 1
1 Description ................................................ 1
1.1 Gauge Assembly ............................................ 1
1.2 Tie-bar ............................................................ 1
1.3 Illuminator ..................................................... 1
2 Principal of Operation ............................... 2
2.1 Operation ....................................................... 2
2.2 Accuracy......................................................... 2
2.3 Glass and Mica .............................................. 2
3 Installation of Gauge System .................... 2
in Service................................................... 3
4.1 Start up Procedure ........................................ 3
5 Maintenance .............................................. 3
5.1 Preparation for Washdown ........................... 3
5.2 Washdown Procedure ................................... 4
Servicing the Ports ........................................ 5
5.4 Cleaning and Inspection of Parts ................. 6
5.5 Reassembling the Port ................................. 6
5.6 Parts/Materials.............................................. 8
5.7 Heating up and Restoring to Service ........... 8
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Gauge Valve Specifications ....................... 8
Gauge ........................................ 8
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Gauge Valves ................................. 8
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7 Disposal at End of Useful Life ................... 8
8 Warranty ................................................... 9
valves.emerson.com
WATER LEVEL GAUGES & WELBLOC
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TABLE OF FIGURES
Figure # 1 - Typical Gauge Assembly.............. 2
Figure # 2A - Gauges with Tie-Bar, Welbloc
Figure # 2B - Gauges with Stuffing Box (S/B)
Figure # 3A - 4-Bolt Design (2 Spring Cones) .. 6
Figure # 3B - Port Design .................................. 7
Figure # 4 - Port Hole Alignment .................... 8
1 DESCRIPTION
The Yarway Color-Port
assembly is used to determine water level in
pressure containing vessels. It consists of the
following major components:
1.1 Gauge assembly - The basic Color-Port
gauge assembly (Figure 1) consists of a
trapezoidal stainless steel body with non-
parallel front and back faces to which are
attached individual covers holding the port
assemblies.
1.2 Tie-bar - Includes upper and lower Welbloc
gauge valves which provide isolation of the
gauge for servicing, and a connection for
draining of the gauge.
1.3 Illuminator - A device that provides a light
source via LEDs and color discernible
viewing. Red and green light (via the LED
illuminator) enter the gauge. Because of
the difference in index of refraction of water
and steam, only the color corresponding to
the contents of the gauge can pass through
and be seen. Green indicates water and red
indicates steam.
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Gauge Valves and Isolation Valves. 4
Gauge Valves and Isolation Valves . 4
Gauge Valve .................. 7
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Water Level Gauges
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GAUGE VALVES
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VCIOM-04520-EN 17/05