Service Procedures - Viking ESFR Technical Data Manual

March 7, 2008
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-945-4495 Email: techsvcs@vikingcorp.com
The deluge valve must be operated (opened) to perform the flow test. Close the prime line valve and
open the emergency manual release valve. Make sure the diversion drain valve is open to flow water
to a drain area or the recovery tank as desired. Note: If antifreeze is stored in the recovery tank, do
not allow water to enter, or contamination of solution will occur. Record the water supply pressure on
the water supply pressure gauge upstream of the deluge valve.
Open the main drain on the downstream Isolation check valve fully. This will allow water to flow
through the deluge valve and both the primary and isolation check valves. Once the pressure gauge
has settled to flowing pressure, record the pressure on the water supply pressure gauge upstream
of the deluge valve.
After the water flow test is completed, close the water supply control valve upstream of the deluge
valve, drain all the water located between the primary and isolation check valves. Then drain all
water from between the deluge valve and the primary check valve using the auxiliary drain on the
deluge valve trim. Close the main drain and auxiliary drain once water is completely drained. Open
the antifreeze supply isolation valve. The CS-1 pump will supply propylene glycol/water solution from
the maintenance solution supply tank. The CS-1 pump will stop running when the pressure in the
section of piping is 50 PSI (3.45 Bar) or the set pressure of the system pressure switch. Ensure there
is no trapped air in the piping between check valves by bleeding through the main drain valve of the
isolation check valve. After system pressure is built, the CS-1 pump will stop running. Open the down
stream system isolation valve, when system antifreeze pressure is at desired pressure and the CS-1
pump stops. Now, prime the deluge valve by opening the prime supply valve and watch for pressure
to build in the prime chamber of the deluge valve. Now, open the system shut-off valve up stream of
the deluge valve. Any supervisory alarm switches silenced for system maintenance must be re-set.
The system is now in service.

4. SERVICE PROCEDURES

A. Drain-Down of the Individual System (if system operation has occurred):
1. After system trip and sprinkler(s) have operated and water has entered the system, the
complete system must be drained down immediately and solution within the piping sys-
tem disposed of.
2. All sprinklers are pendent type and must be removed and replaced with new sprinklers.
This is due to possible collection of water at each sprinkler and creation of a small ice
plug in each sprinkler.
3. If using the Viking Model AV-1 Air/vent Valve assembly the device also breaks a vacuum
in the piping system and provides faster and more complete drainage of the system pip-
ing.
B. Taking the System Out of Service:
1. Close the water supply control valve to the riser being serviced.
2. Close the antifreeze supply valve to the riser being serviced.
3. If the system is being serviced, then the solution in the system can be drained into clean
containers or reclaim tank and reused as long as water has not entered the systems.
Solution should be checked at various points while draining for proper refractometer
readings to verify freeze-protection properties.
4. Open vent/bleed valves at high points of the system or if the AV-1 Vent Valve is applied
it will automatically open.
TECHNICAL DATA
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
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