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
Page 27 of 35
SECTION 10 – PERIODIC MAINTENANCE
The bladder tank by itself, requires a limited level of maintenance throughout its lifetime.
However, some essential operations must be regularly carried out to ensure appropriate performance and durability of the bladder
tank components.
This section covers the periodic (i.e. “ordinary”) maintenance. The ordinary maintenance does not include special repairing of the
bladder tank, except the bladder substitution. For repair operations, always contact Viking
10.1 Periodic maintenance frequency
It is the responsibility of the end user to keep informed and updated of the local regulations concerning frequency and extent of
maintenance activities.
Viking indicates in this manual the minimum recommended maintenance to control and to preserve in full efciency the equipment
supplied. The extent and the frequency of the maintenance shall also be linked to the environmental and usage conditions. Any
additional request as a result of norms, laws and regulation, must be added to the recommendations made by Viking.
10.2 General requirements
a. The maintenance must be carried out by qualied and authorized personnel according to applicable local regulations and laws.
b. Responsible site personnel must be informed about the planned maintenance of the bladder tank and its accessories ensuring
alternative re safety measures are in place.
c. Any safety measure to prevent accidents must be taken according to the applicable legislation.
d. Maintenance personnel must operate with caution and use all required individual safety equipment (safety shoes, gloves,
glasses, etc…).
e. Do not act on the bladder tank before isolating from the re system and relieving the pressure.
f. Do not perform welding on the tank body as damage to the bladder will occur.
g. For maintenance operations on bladder tank accessories (such as thermal relief valve or CCV) always make reference to their
dedicated documentation and manuals.
h. When removing tank components during maintenance, care should be taken to avoid damage to the connections and piping
these components are installed in.
i. In case of a malfunctioning safety device (thermal relief valve, system relief valve, etc…) depressurize the bladder tank
immediately .
j. In case of bladder tank, component parts or consumables are to be disposed of, do so accordance with local regulations and
in full respect for the environment. Ensure authorized disposal companies are used.
The maintenance recommendations given in this manual are relevant to the Viking bladder tank and accessories only. Inspection
and maintenance of the entire foam system, where materials supplied by Viking are included, are not within the scope of this
manual or the following recommendations. It is recommended that the instructions given in applicable standards or regulations are
adhered to (e.g. NFPA 11/16/25 codes, EN standards, etc…).
CAUTION
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