Sealey VSAC002 - Manual (Page 2)

3.3 Recovering Refrigerant
Note: Refrigerant should not be exhausted to the atmosphere.
3.3.1 Ensure the blue low side hose is connected to the A/C system’s low side service port, the red high side hose is connected to the A/C
system’s high side service port and the yellow centre hose connects to the inlet of the recovery unit. Set up as in fig.1.
3.3.2 Follow the instructions provided with the recovery unit for proper recovery of refrigerant from the A/C system.
3.4 Evacuating and Charging a Refrigerant System
3.4.1 See section 3.1 (Connecting quick couplers) before proceeding. Connect the blue low side hose to the A/C system’s low side service port.
Connect the red high side hose to the A/C system’s high side service port.
3.4.2 Check the manifold gauge pressure reading to be sure the A/C system has been recovered properly. If not, follow steps under Section 3.3
(Recovering Refrigerant). If it has, connect the centre yellow charging hose to a vacuum pump. Set up as in fig.1.
3.4.3 Open the high and low side hand-wheels (fully anti-clockwise) and start the vacuum pump.
3.4.4 After evacuating the system according to the manufacturer’s specifications, close both the high and low side hand-wheels and turn off the
vacuum pump.
3.4.5 Disconnect the yellow hose from the vacuum pump and connect it to the refrigerant supply.
3.4.6 Slightly open the refrigerant supply valve. Remove the valve cap (fig.2) and purge air from the yellow charging hose at the manifold
according to manufacturer’s recommendations, then close the supply valve.
3.4.7 You can now charge the A/C system according to the manufacturer’s specifications.
• If the system specifications call for charging on the high side, close the manifold’s blue low side hand-wheel, open the refrigerant supply
valve and open the manifold’s red high side hand-wheel. To find out when to cease adding refrigerant keep an eye on the sight glass
(fig.2), when bubbles stop appearing, close the manifold’s red high side hand-wheel and close the refrigerant supply valve.
• If the system specifications call for charging on the low side, close the manifold’s red high side hand-wheel, open the refrigerant supply
valve and open the manifold’s blue low side hand-wheel. To find out when to cease adding refrigerant keep an eye on the sight glass
(fig.2), when bubbles stop appearing, close the manifold’s blue low side hand-wheel and close the refrigerant supply valve.
3.4.8 When you have charged the system, close both manifold hand-wheels. Let the compressor run and check the manifold’s gauge pressure
readings to be sure the system is operating properly. If it is not, adjust the system as necessary. To disconnect the manifold when the
system is operating correctly, first close the high side coupler valve, then disconnect the red high quick coupler from the A/C system.
3.4.9 Restart the A/C system, then open both manifold hand-wheels. Refrigerant from both hoses will be drawn quickly into the A/C system
through the blue low side hose.
3.4.10 When both gauges show the lowest operating pressure recommended by the manufacturer, close the low side valve and turn off the A/C
system.
3.4.11 Close the low side coupler valve and disconnect the low side hose from the A/C system.
4. MAINTENANCE
4.1 Keep the manifold in good working order.
4.2 Periodically replace O-rings and valve seats.
4.3 Be sure to lubricate O-rings with high vacuum grease.
4.4 Generally keep the manifold clean from dirt and grime to
improve product life.
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park ,
Bury St. Edmunds, Suffolk,
IP32 7AR
Original Language Version VSAC002.V2 Issue: 1 - 19/12/11
01284 757500
01284 703534 [email protected]
www.sealey.co.uk
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fig.2