5
www.globalwatersolutions.com
EN
4. Replace protective air valve cap and seal with the air valve
label, if provided. This will enable you to determine if the valve
has been tampered with in case of future service calls.
5. After correctly setting the precharge, no regular air charge
checks are required.
Do not check air after installation.
⚠
CAUTION:
Never over-charge the tank and precharge the
tank with air at ambient temperature only!
If the tank is to be precharged over 4 bar (58 psi):
1. Adjust the precharge of the tank to 4 bar (58 psi).
2. Install the tank into the system.
3. Fill the system with water to equalise the system and
precharge pressure at 4 bar (58 psi).
4. Increase precharge pressure in maximum 3 bar (44 psi)
steps and afterwards adjust the system pressure to the new
precharge pressure by filling water into the system.
5. Repeat steps 3 and 4 until the required precharge is reached.
Emptying a tank that has a precharge over 4 bar (58 psi):
1. Make sure there is some water in the tank.
2. Isolate the tank from the system (close isolation valve).
3. Make sure no additional water can get into the tank (shut off
the pump and / or any water supply).
4. Release air from tank until 3 bar (44 psi) tank / air pressure
is remaining.
5. Open a drain valve and afterwards the isolation valve to drain
the tank.
⚠
CAUTION:
Make sure that the system pressure is never
lower than 4 bar (58 psi) below precharge. If system pressure
needs to be lowered, the tank should be isolated or emptied
as previously described.
1.4 Typical Installations
Fig. 1.4-1 Tank Installation with Accessories
Tranducer
Flow Sensor
Pressure Switch
Pressure Gauge
Relief Valve
Water Flow
Tank
•
This is a diaphragm type pressure tank for use on a well water
or booster system. The system must be protected by a suitable
relief valve.
•
FlowThru™ Series tanks should only be used in Variable
Speed Drive or Variable Frequency Drive controlled pumping
systems.
Fig. 1.4-2 With Convertible Jet Pump
Tank
Relief Valve
Drain
Pump
Water Flow
Fig. 1.4-3 With Submersible Pump
Relief Valve
Tank
To System
Water Flow
Submersible Pump
From
Pump
Tank
Fig. 1.4-4 Booster Pump w/ Horizontal Tank
Pressure Switch
Pressure Gauge
Flexible
Connector
Pump
CONFIDENTIAL
downloaded this file on February 12, 2019.
