TESUCO TECK01 Liquid Charging Kit Instruction Manual
- June 13, 2024
- TESUCO
Table of Contents
HOSPITALITY, GAS SAFETY, INDUSTRIAL, SCIENTIFIC, MEDICAL
Operating Instructions
CO2 R744 Liquid
Charging Kit
QUALITY GAS EQUIPMENT
www.tesuco.com.au
DESCRIPTION
Part No: TECK01
The Tesuco® R744 liquid CO2 charging kit comes complete with needle valve,
safety relief valve, purge valve, pressure gauges and 5M hose assembly. It is
packaged in a plastic case with foam insert for protection of the equipment
when not in use.
This equipment can only be used on CO2 cylinders with a dip tube that allows
for liquid CO2 to be withdrawn.
These cylinders have a black stripe length ways on the outside of the
cylinder.
DO NOT USE ON CO2 CYLINDERS WITHOUT A DIP TUBE
Only use this equipment for high speed charging of CO2 systems.
SAFETY
This instruction is to be used as a guide only and does not override any
normal standard operating procedures. Each system is different, please consult
the operating manual before using this equipment.
WARNING
MAXIMUM DESIGN PRESSURE 175 BAR
HIGH SPEED LIQUID CHARGING SUITABLE FOR USE ON TRANSCRITICAL AND SUBCRITICAL
SYSTEMS QUALIFIED PERSONS ONLY USING APPROPRIATE PPE
LIQUID CO2 CAN CAUSE COLD BURNS
ENSURE AREA IS WELL VENTILATED
CO2 IS AN ASPHYXIATE
PRE-CHARGING THE EQUIPMENT
Before charging the system
with liquid using this equipment, the unit must be charged with gaseous CO2 to
550 kPa using a standard CO2 regulator and hose connected to a gaseous draw
off CO2 cylinder.
RC1SCD10 CO2 Regulator 0 – 1,000 kPa
GWSWIG3F 3M Inert gas hose 5/8-18 to 1/4 SAE Flare
CONNECTING THE EQUIPMENT
Unpack the charging assembly and the hose from the case.
Connect the T30 inlet connection to the cylinder and tighten using the hand
wheel.
Connect the hose to the 1/4 SAE flare fitting on the outlet of the charging
assembly.
Connect the other end of the hose to the rack or unit to be charged at the
correct inlet port.
Ensure that at this stage the needle control valve and the purge valve are
closed and no pressure is reading on the gauges.
Start by purging the air between the cylinder and the needle valve.
Do this by slowly opening the CO2 cylinder valve anti-clockwise with the
needle valve closed.
CONNECTING THE EQUIPMENT
Then, open the purge valve. After doing that open the needle valve slowly
allowing a small amount of CO2 to vent through the purge valve. You will know
it is venting as a white vapour will be released. 
Close the needle valve
and then the purge valve and then close the cylinder valve. The area between
the cylinder valve and the needle valve is now charged with liquid
CO2.
Now purge the air from the hose.
The delivery gauge should be reading zero.At the unit or rack side open the ball
valve with a shifter.
This will charge the hose with the system pressure, which can be confirmed by the delivery (lower) pressure gauge showing system pressure.
Open
the purge valve and allow the gas to vent for a few seconds.
Close the purge valve. The hose will now be purged of any air and filled with gaseous CO2.
The left gauge should be reading system pressure and the cylinder gauge reading cylinder pressure.
CHARGING WITH LIQUID CO2
The rack system can be charged with liquid CO2 follow these steps.
Open the CO2 cylinder valve.
Open the needle valve very slowly
Caution: Opening the valve too quickly may cause the safety relief valve
to vent
The refrigeration unit is now charging.
Cylinder scales can be used to measure the weight of the CO2 being
transferred.
CO2 being transferred. Consult the manual to determine the amount to charge
the unit with.
FINISHING & DE-PRESSURISING THE SYSTEM
Close the cylinder valve.
Wait around 30 seconds, this allows any liquid to be drawn into the rack.
Then close the ball valve on the rack.
There will still be pressure reading on the gauges, to release this pressure
and purge the equipment of liquid and gaseous CO2 open the purge valve until
both the pressure gauges drop to zero.
Close the purge valve, close the needle valve.
Remove the hose from the rack and the charging unit and then remove the
charging unit from the cylinder.
Re-Pack the charging unit and hose back into the case.
NOTES ——–
© Tesuco
HOSPITALITY, GAS SAFETY, INDUSTRIAL, SCIENTIFIC, MEDICAL
The information contained herein is provided to assist the operator in the safe use of the CO2 R744 Liquid Charging Kit. However, the ultimate responsibility for the safe use of this lies solely with the operator, including any requirements of associated Australian Standards.
Quality
ISO 9001
R744 Liquid Charging Kit
OI_TECK01_V01