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Vertical Level Control for Boiler
To get best intrinsic value of every Techtrol product it
should be installed, maintained properly and used within
its specified limits. It will help to extend the working life
of your instrument.
Unpacking:
1. Examine the switch and ensure that it is in accordance
with required specification.
2. Visually examine the instrument for any damages or
breakage.
3.
Check and record the model number and serial
number for future reference
Secondary
Primary
magnet
magnet
Airbreak
switch
Float
Stem
07
08
01) Switch enclosure
02) Base
03) Conduit conn
04) Gasket
05)
Switch flange
06)
Chamber flange
07) Steam side conn
Fig 1
INSTALLATION & OPERATIONAL MANUAL
.
01
13
02
03
05
04
06
14
09
11
12
10
15
08) Water side conn
09) Chamber
10)
Chamber end cap
Float stem
11)
12)
Float
13)
Airbreak switch assy
Bolts & nuts
14)
15) Plug
–
'VLC'
135
250
(Approx)
100
(Approx)
CCD±1
125
(Approx)
142
(Approx)
Fig 2 Dimensions
CO NTRO L
RAN G E =
150±2 (AP P RO X )
L1
L2
L3
L
1
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Table of Contents
Summary of Contents for Techtrol VLC
- Page 1 INSTALLATION & OPERATIONAL MANUAL – Vertical Level Control for Boiler ‘VLC’ To get best intrinsic value of every Techtrol product it should be installed, maintained properly and used within its specified limits. It will help to extend the working life of your instrument.
-
Page 2: Pre-Installation Check
Pre-Installation Check: 1. Ensure that float connected to stem is properly tightened. If not, tighten it. 2. Ensure other fasteners / screws have not loosened in transit. Tighten them adequately, if found loose. 3. Open the enclosure cover. Switch assembly are fitted on the seal pipe. 4. -
Page 3: Operation
In case float is punctured or stem bend may be due to sudden change in float movement, replace it as per steps given below 1. Take out VLC from the chamber/ tank. 2. Float and stem is screwed to the flange connection with adaptor. -
Page 4: Periodic Maintenance
Adjustment of switch position: (fig 7 & 8) Number of switches are mounted on either side of the seal pipe. 1. Each switch is fixed on guide rod pipe through Guide a screw. They are set in factory at required level set point. -
Page 5: Troubleshooting
Excessive deposition on float a. Clean the surface where operating or not surface due to dirt in liquid. deposition has taken place. operating at b. Vibration may cause damage to b. Avoid vibrations by providing desired level. wiring connections. dampers. MAN/VLC/ REV 00/03‐2020...
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