ICE MACHINES Q-Model Service Manual

Section 7Refrigeration SystemRemote Charging Procedures1. Be sure the toggle switch is in the OFF position.2. Close the vacuum pump valve, the low and high sideservice valves (frontseat), and the low side manifoldgauge valve.3. Open the charging cylinder and add the properrefrigerant charge (shown on nameplate) into thesystem high side (receiver outlet valve anddischarge lines quick-connect fitting).4. If the high side does not take the entire charge,close the high side on the manifold gauge set, andbackseat (open) the low side service valve andreceiver outlet service valve. Start the ice machineand add the remaining charge through the low side(in vapor form) until the machine is fully charged.5. Ensure all vapor in charging hoses is drawn into themachine, then disconnect the manifold gauges.NOTE: Backseat the receiver outlet service valve aftercharging is complete and before operating the icemachine. If the access valve core removal andinstallation tool is used on the discharge quick-connectfitting, reinstall the Schraeder valve core beforedisconnecting the access tool and hose.6. Run the ice machine in freeze cycle.7. Close the high side service valve at the ice machine.8. Open the low side service valve at the ice machine.9. Open the high and low side valves on the manifoldgauge set. Any refrigerant in the lines will be pulledinto the low side of the system.10. Allow the pressures to equalize while the icemachine is in the freeze cycle.11. Close the low side service valve at the ice machine.12. Remove the hoses from the ice machine and installthe caps.Part No. 80-1100-3 7-51