Viking VFT - Level Indicator Setup

BLADDER TANK MODEL VFT & FT
INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
(
foam concentrate inside the bladder
)
TECHNICAL
MANUAL
F_032216 16.1 | TM1.3.1.1/14032016/en
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
VISIT THE VIKING WEBSITE FOR THE LATEST EDITION OF THIS TECHNICAL MANUAL
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7.4 Level indicator setup (where tted)
Since the Viking bladder tanks, due to tolerances, have a capacity that differs slightly among tanks of the same size, the level
indicator showing the max capacity must be adjusted in the eld after a full foam loading.
This adjustment is optional, since it does not affect the operation of the bladder tank. It is only to have an easier visualization of the
foam concentrate level height. After the complete foam lling, follow the standard procedure for level check described in Section 9.
This procedure must be done only with a complete lling of the tank. If a partial loading is performed, the level shown with the black
needle will not be representative of the foam concentrate level due to the water that is also in the tank and therefore cannot be
used to set the red needle.
After following the procedure in Section 9 the foam quantity is shown on level indicator by the black needle:
1. Remove the glass cover of indicator by rotating the bezel counter-clockwise, exposing the needles.
2. Move manually with nger(s) the red needle to let it match the black needle, which is showing the actual measurement.
3. Replace the glass cover securing it by rotating clockwise on the corresponding stops
See also Figure 7.4.1 for a visual explanation about how to adjust the indicator
NOTICE
Figure 7.4.1:Detail of the needle adjustment procedure for level indicator