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99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Series 41 Digital Manifold Quick Start Guide Key Function ON / OFF key: power on/off and refrigerant switch. LIT / UNIT key: Back-light and unit setting...
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Unit Setting Mode 1. After entering the setting mode, the current temperature unit flashes as the first setting unit. Press LIT/Unit key to switch between two temperature units. The selected unit flashes. 2. Press and hold LIT/Unit key for three seconds to change the next setting unit, the pressure unit.