ENGLISH 35 / 78 CAP. 8 - GAS TYPE SWITCHING
CHECK-LIST
1. A/C station inner flushing
2. A/C station emptying
3. Installation of transformation kit
4. A/C station cleaning cycle
5. Gas type setting and vessel charging
EQUIPMENT REQUIRED
• Brain Bee A/C recovery station or equivalent station for R134.
• Screwdrivers and wrenches set
MATERIALS/SPARE PARTS
• MULTIGAS 134 TO 1234 KIT cod. 1010350131XX
• R134 MALE HP -> R134 MALE LP COUPLER cod. 14123560010100
PROTECTION EQUIPMENT
• Insulating gloves for refrigerant fluids
• Total protection goggles
• Operate in compliance with the local national laws/provisions in force.
WORKPLACE
• Non-closed premise with adequate air change rate.
• Flat and even floor
• Operate in compliance with the local national laws/provisions in force.
SAFETY NOTE: These instructions do no replace the use and maintenance manual of the station,
the prescriptions of which shall be strictly complied with.
SAFETY NOTE: Never point the hoses of the machine, which may contain gas, towards yourself or
other people.
1) A/C station inner flushing
a) Lock the machine wheels to prevent any movement
b) Connect the HP and LP charge hoses together, using the R134 MALE HP -> R134 MALE
LP COUPLER cod. 14123560010100
c) Open the taps of the HP and LP quick couplers
d) Turn on the station
o Enter the “Service” menu, password “BRN”
o Enter the Manual Activations section
o Activate, in sequence, the R - A valves and the compressor C
o Flush the circuit for 10 minutes
e) Drain the exhausted oil
o Deactivate the R valve and wait for HP and LP pressure (check on pressure gauge)
to reach between +300 & +400mbar
o Turn off compressor C
o Activate oil drain valve S
o Keep it active until all residual oil has been drained.
o Deactivate oil drain valve S
f) Complete hoses emptying
o Turn on compressor C again
o Wait for HP and LP pressure (check on pressure gauge) to reach -300mbar and
complete hoses emptying.
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