1202 E CASINO RD 2025-07-31 - Laserfiche WebLink

3. Open the Low Pressure side of the manifold gauge. Keep the High Pressure side closed. 4. Turn on the vacuum pump to evacuate the Flare nut system. 5. Run the vacuum for at least 15 minutes, or until the Compound Meter reads -76cmHG Lt _4� 6. Close the Low Pressure side of the manifold �44Errn gauge, and turn off the vacuum pump. Cap '.' 7. Wait for 5 minutes, then check that there .,,, has been no change in system pressure. Valve body 8. If there is a change in system pressure, refer Valve stem to Gas Leak Check section for information Fig.6.2 on how to check for leaks. If there is no 11. Remove the charge hose from the service port. change in system pressure, unscrew the cap 12. Using hexagonal wrench, fully open both the from the packed valve (high pressure valve). high pressure and low pressure valves. 9. Insert hexagonal wrench into the packed valve 13. Tighten valve caps on all three valves (service (high pressure valve)and open the valve by port, high pressure, low pressure) by hand. turning the wrench in a 1/4 counterclockwise You may tighten it further using a torque turn. Listen for gas to exit the system, then wrench if needed. close the valve after 5 seconds. 10. Watch the Pressure Gauge for one minute 0 OPEN VALVE STEMS GENTLY to make sure that there is no change in pressure. The Pressure Gauge should read When opening valve stems, turn the hexagonal slightly higher than atmospheric pressure. wrench until it hits against the stopper. Do not try to force the valve to open further. Note on Adding Refrigerant Some systems require additional charging depending on pipe lengths. The standard pipe length varies according to local regulations. For example, in North America, the standard pipe length is 7.5m (25'). In other areas, the standard pipe length is 5m (16'). The additional refrigerant to be charged can be calculated using the following formula: ADDITIONAL REFRIGERANT PER PIPE LENGTH Connective Pipe Air Purging Additional Refrigerant Length (m) Method n m Standard pipe length Vacuum Pump N/A Liquid Side:0 6.35(0 0.25") Liquid Side: 0 9.52(0 0.375") C R22: R22: o (Pipe length—standard length)x 20g/m (Pipe length—standard length)x 40g/m (Pipe length—standard length)x 0.21 oZ/ft (Pipe length—standard length)x 0.42oZ/ft >Standard pipe Vacuum Pump length Inverter R410A: Inverter R410A: (Pipe length—standard length)x 15g/m (Pipe length—standard length)x 30g/m (Pipe length—standard length)x 0.16oZ/ft (Pipe length—standard length)x 0.32oZ/ft Fixed-frequency R410A: Fixed-frequency R410A: (Pipe length-standard length)x 15g/m (Pipe length-standard length)x 30g/m (Pipe length-standard length)x 0.16oZ/ft (Pipe length-standard length)x 0.32oZ/ft 0 CAUTION DO NOT mix refrigerant types. Page 30 ►