CAP. 10 - A/C SYSTEM RECHARGE 44 / 74 ENGLISH
ClimFill Maxi
10.3 RECHARGE Q-MODE AND S-MODE
ClimFill
®
Pro can apply two different refrigerant recharge modes; the first one is called
Q-Mode (Quick mode) and features the opening of the recharge valve by injecting
gas through the HP port.
The Q-Mode for this model ClimFill
®
Maxi is based on the patented technology
Supercharge which allows for increasing the refrigerant injection speed by charging
an A/C loop from the HP side while recovering, at the same time, from LP (if available).
The S-Mode (Suction Mode) assure to complete the refrigerant recharge but needs
always to turn on the vehicle engine and the A/C system to recharge refrigerant from
LP side.
The S-Mode (Suction mode) function is the second recharge procedure, an alternative
to the Q-Mode (Quick mode).
It features a more accurate recharge and guarantees a successful recharge (it
however requires a longer time and the operator's intervention).
If the car A/C system is equipped with both couplers or with LP coupler only, there are
two slightly different working modes; in any case, if only the HP coupler is available the
S-Mode (Suction mode) mode is not applicable.
With both HP and LP couplers available, the S-Mode (Suction mode) features the
injection of the selected refrigerant amount into the system through the HP hose; then
refrigerant remained into the HP hose is sucked by the car system – engine and
compressor running – through LP (after disconnecting and closing the HP coupler).
In case the LP coupler only is available, the station charges the system with 50% of the
selected amount with car compressor off and waits for 5 minutes before recalling the
operator. This wait time – quite rare since most of cars are equipped with HP coupler
too – allows the refrigerant injected near the compressor – that is LP side – to
evaporate to prevent any damage to the compressor during the admission of liquid
phase refrigerant. Then, after car and A/C system switch ON, recharge continues
through timed injection of refrigerant through hose LP; such injections start exclusively if
the LP pressure is lower than 3 bar.
To Next Page
Loading...