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1Anthony-- Model 401 & 403 Pass-Thru <br /> Service and Installation Instructions <br /> GM, 99-21972-SO01 Rev. A <br /> B. LEDs Flickering? <br /> 1. Incorrect driver <br /> 2. Defective LED(s) <br /> 3. Incorrect voltage <br /> C. Blinking LED <br /> 1. Voltage too high <br /> 2. Wrong LED or driver <br /> 3. Incorrect connector wiring <br /> Safety Precautions <br /> 1 . Always turn off power to case, doors and frames before starting work. <br /> 2. Always use a qualified electrician for electrical work. <br /> 3. Always wear safety glasses when working on equipment. <br /> Tips <br /> 1. Never splice door or frame heater wires. Complete replacement <br /> recommended. <br /> 2. When installing gasket and plastics, use a liquid soap. <br /> 3. Keep doors and frames clean. <br /> 4. For binding gasket or plastic parts, use a food grade silicone. <br /> 5. Preventive maintenance is the key to door and frame longevity. <br /> Dew Point Chart <br /> NORMAL TEMPERATURE APPLICATIONS <br /> GLASS TYPE ROOM TEMP (F) CASE TEMPERATURE (F) <br /> 40 35 30 25 20 <br /> 70 74 71 68 65 62 <br /> THREE 75 72 68 66 63 60 <br /> PANE 80 68 66 63 60 58 <br /> NHG* 85 66 64 61 58 56 <br /> 90 65 62 1 59 1 57 1 54 <br /> *NHG = Non Heated Glass % REL. HUMIDITY @ WHICH CONDENSATION FORMS ON GLASS <br /> Calculations make no allowance for air leaks or unusual air flow patterns within <br /> cases and are intended to be used as guidelines only. <br />