Freon pressure in a 1996 Volvo 850

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grant kaylor
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Joined: Mon Aug 11, 2008 1:18 am
Location: WVa

Freon pressure in a 1996 Volvo 850

Post by grant kaylor » Fri Aug 22, 2008 5:18 am

I need to know the pressure recommended fo air conditioning refilling.

Indestructible Turtle
Posts: 88
Joined: Sat May 15, 2010 8:06 am

Re: Freon pressure in a 1996 Volvo 850

Post by Indestructible Turtle » Sat Aug 07, 2010 10:26 am

1. Connect the recharge service hose and valve to a can of refrigerant.

2. Turn the valve on the service hose to puncture the top of the can.

3. SLOWLY turn the valve back out to release a small amount of refrigerant into the hose. This will blow air out of the hose (which you do not want in your A/C system).

4. Close the valve so no more refrigerant escapes, then quickly connect the other end of the service hose to the LOW pressure service fitting on the A/C system.
CAUTION: DO NOT connect a can of refrigerant to the HIGH side service fitting. The operating pressure inside the A/C system when it is running may exceed the burst strength of the can, causing the can to explode! This should be impossible to do because the service hose for recharging the A/C system will only fit the smaller LOW pressure service fitting. Even so, you should be aware of the danger.

5. Hold the can UPRIGHT so no refrigerant liquid enters the service hose. You only want VAPOR to be pulled into the A/C system (the compressor may be damaged if it (bad word) in a big dose of liquid!).

6. OPTIONAL BUT HIGHLY RECOMMENDED: You should use a gauge to monitor the recharging process. Though not absolutely necessary, a gauge will help you recharge your A/C system more accurately, and reduce the chance of undercharging or overcharging (either of which will reduce cooling performance).

A high pressure A/C gauge can be connected to the HIGH pressure service fitting, or a low pressure A/C gauge to the LOW pressure service fitting, or gauges can be attached to both fittings (that is what professional technicians do).

NOTE: Some DIY recharging kits include a low pressure gauge on the service hose or on a trigger-grip style can dispenser

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Joined: Thu Sep 02, 2010 4:01 am

Re: Freon pressure in a 1996 Volvo 850

Post by brian696 » Thu Sep 02, 2010 10:48 am

Hey that's a great informtaion about how to recharge the air conditioning.Thanks for providing the details.

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