Technical data

48
15.2 Filling Systems
A suitable portable pump can be utilized to fill the system. (The CS-1 pump can
be used for filling the system initially at 15 GPM (56 l/min) to 100 ft. head
pressure or supervisory 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 supervisory pressure, [recommended 50 PSI (344 kPa) pressure] and
is designed to maintain supervisory pressure once the system is initially filled.
Appropriate vent/bleed valves must be installed on each system’s piping at all
local high points to allow air to escape while liquid fills the system.
NOTE: Never leave the unit unattended when filling the system. Running the
pump dry, without liquid, will damage pump seals and possibly damage the pump
impeller.
Follow the steps below:
1. Turn off and isolate the electrical supply to the unit.
2. Close the Supply Isolation and Tank Fill valves.
3. If not already connected to fill the storage tank, connect the antifreeze
supply container to the supply isolation valve. A flexible hose may be used,
but must not restrict the flow from the supply container to the valve. An
additional isolation valve must be installed in the line between the supply
container and unit’s supply isolation valve.
A slight downward slope from the supply container to the unit’s valve
connection is required to prime the pump and maintain positive head on
pump inlet. Always use a backup wrench when making piping connections to
avoid damage to the unit’s piping.
4. Open the shut off valve on the supply container and supply isolation valve
on the CS-1.
5. Open high point vent/bleed valves on the system.
6. Select system to be filled using switches “A” and “B” (refer to Figure 1 on
page 51 d). Use the table below to determine switch “A” and “B” position.
SYSTEM
SELECTED
SWITCH A
POSITION
SWITCH B
POSITION
NO SYSTEM_
TANK FILL CENTERED CENTERED
SYSTEM 1 UP CENTERED
SYSTEM 2 DOWN CENTERED
SYSTEM 3 CENTERED UP
SYSTEM 4 CENTERED DOWN
SYSTEM 5 UP UP
SYSTEM 6 DOWN DOWN