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includes a low-pressure alarm switch that indicates a loss of supervisory
pressure and requires a manual shutoff of the antifreeze supply valve.
Up to six individual risers are connected to the CS-1 Tank and Pump System
through normally closed solenoid valves. The supervisory pressure switch and
flow alarm switch for each system are connected on site to the CS-1 system
control. As system supervisory pressure drops, the corresponding solenoid valve
opens, allowing flow from the CS-1 system to that system. When system
pressure reaches the system set point, the system pressure switch opens and
the CS-1 control closes that solenoid valve. In the case of flow due to a system
operation, the normally closed contacts of that system’s flow alarm pressure
switch open, and the CS-1 control prevents that system’s solenoid valve from
opening, regardless of system pressure.
A suitable portable pump can be utilized to fill the system to the static water
pressure. (The CS-1 pump can be used for filling the system initially at 15 GPM
(56 l/min) to 100 ft. head pressure or system static pressure, however, it is a less
efficient pump for filling the system because of the duration of time required to do
so. To fill the system, the CS-1 is connected to the antifreeze supply. The system
to be filled is selected using two toggle switches on the CS-1 control enclosure.
Antifreeze from the supply is pumped to the system piping. Pump operation is
manually controlled during the fill process. The CS-1 pump is to be utilized to
bring the solution to maintenance pressure, [normally 50 PSI (344 kPa) pressure]
at the primary check valve and is designed to maintain system pressure once the
system is initially filled.
Two modes of electrical control are available. Manual operation allows the user
to operate the pump motor by means of a switch regardless of the electrical
controls status. Automatic operation uses the unit’s pressure switch to operate
the pump based unit pressure. Flow to each riser is controlled by that system’s
pressure switch and flow alarm switch. In “Automatic” mode, pump operation is
limited to six times per hour. Also, pump operation is inhibited at low liquid level
in the tank.
WARNING: The CS-1 system must be attended at all times in Manual mode. The
pump can operate without liquid in Manual mode, which will damage the pump.
Running the CS-1 without fluid in Manual mode voids the warranty. This pump is
not self- priming.
The storage tank is opaque to allow visual indication of the antifreeze leveling. A
Y-Strainer is included on the pump suction line. A locking valve is included on
discharge line. Lock in the open position. This valve is used to isolate the
antifreeze storage tank for maintenance. A check valve in pump discharge piping
prevents antifreeze backflow from the system, which would damage the pump.
An adjustable pressure relief valve is included to protect the pump discharge
piping. This relief valve must be set at 10 PSI (68,9 kPa) above the pump system
pressure switch. All components of the pump unit are compatible with the
antifreeze solution and rated to a maximum pressure of 225 PSI (1 551 kPa).
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