Operating In Maintenance Mode: Automatic - Viking ESFR Technical Data Manual

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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
11. If another system is to be filled, turn the "Man-O-AUTO" switch to "O" and select the next
system using switches A and B.
12. Turn the "Man-O-AUTO" switch to "Man" and repeat steps 8 through 10.
13. After filling all systems and the CS-1 tank, close the liquid supply valve.
14. All air must be out of the system before switching the unit to maintenance mode. Follow
the system manufacturer's recommendations to ensure all air is removed.
G. Operating in Maintenance Mode: Automatic
As previously stated, the CS-1 is designed to maintain the antifreeze pressure in the sprin-
kler system at a supervisory pressure of 50 PSI (3.4 Bar). A pressure switch installed in the
pump discharge line operates the pump between two pressures sensed in the unit's piping. A
pressure switch on each system sends a signal to the CS-1 to open and close that system's
solenoid valve.
Ensure all air is removed from system piping before placing the unit in automatic operation.
Liquid level in the storage tank must be above the level switch height or pump operation is
inhibited.
Close the liquid supply and tank fill isolation valves. Open the tank discharge isolation valve
and system liquid supply isolation valve.
With the "ON-OFF" switch "ON", switch the "Man-O-AUTO" switch to the "AUTO" position. The
CS-1 is now operating in Maintenance mode.
NOTE: The CS-1 control system uses a time delay relay, set at 10 minutes, to limit pump
operation to six times per hour maximum. When the unit is first energized in "AUTO", pump
operation is delayed for 10 minutes.
After 10 minutes, if the CS-1 piping is below the unit's pressure switch setting, the pump motor
will operate, raising CS-1 manifold pressure.
The pump will turn off at the pressure switch cutout pressure.
Each system's solenoid valve will open in response to system pressure switch.
Table 14 -
Switch Settings
TECHNICAL DATA
System Selected
No System - Tank Fill
System 1
System 2
System 3
System 4
System 5
System 6
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
Switch A Position Switch B Position
Centered
Up
Down
Centered
Centered
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Down
March 7, 2008
Centered
Centered
Centered
Up
Down
Up
Down