If your HL122 features a hydraulic dashpot at the base, ensure it is filled to the correct level with standard dashpot oil (silicone fluid). This fluid prevents the dial pointer from swinging wildly back and forth.
Simply press the PLU key followed by the assigned number, or use the direct hotkeys if your specific HL122 variant features a direct matrix keypad. 4. Common Troubleshooting and Error Codes avery berkel hl122 manual pdf work