MSD Research All-Access Model AA1 Condensate Cleanout Device;

The all-access model aa1 allows fast and easy access to clear and maintain a/c drain lines. How to install: Install in ¾" or 1" (couplings not included) pvc drain line using pvc glue. Be sure arrows are pointing away (downstream) from unit drain pan. Install horizontally (preferred) or vertical only if necessary. To clear drain line using nitrogen or co2: Remove cap from valve, attach hose and blow out. To vacuum or blow out drain using gallon gun, drain dawg or other method: Open cover and lift out flapper holder. Insert included adaptor into device opening in the direction you want to vacuum or blow. Attach hose to adaptor and vacuum or blow out drain line. To use as a shut off valve while clearing multi-drained units: Open cover, place flapper closer tool (included) into port on inside cover, close cover and clear other drain lines. To inspect, clean or add drain line cleaners: Open cover, lift out flapper holder, check and clean flapper holder and interior of device. Add drain line cleaner if desired. Reinstall flapper holder, close cover and tighten cap securely.