TM 10-6640-238-13 4-85 INSTALL 1. Install Vacuum Pump.  See Figure 4-26. a. Install conduit (2) on vacuum pump (4) motor. b. Position vacuum pump (4) on mechanical room wall foundation and secure with five screws (10), ten washers (11), and five nuts (12). c. Connect drain line (9) to vacuum pump (4) and secure with hose clamp (8). d. Connect suction hose (7) to vacuum pump (4) and secure with hose clamp (6). e. Connect discharge line (3) at discharge valve (5) and secure with union. f. Install motor leads and conduit (2) to controller (1) and tighten conduit nut.  Connect motor leads as tagged to controller and remove tags. g. Replace controller (1) cover. 2. Install Flow Control Devices.  See Figure 4-24. a. Replace teflon tape on male fittings.  Be sure to wrap teflon tape in same direction of pipe thread. b. Install stopcock valves (1) by screwing valves into vacuum system piping tees or elbows. 3. Replace System Piping.  See Figure 4-25. a. Apply teflon tape on male fittings.  Be sure to wrap teflon tape in same direction of pipe thread. b. Connect pipe nipple to elbow (3), coupling (4) or valve (5). c. Connect pipe to union (1). TEST Test Vacuum System. Test vacuum system in accordance with procedures listed in paragraph 2-6l.