TM 10-6640-238-13 2-51 (e) Position WATER OUT/IN valve (3) to IN position. (f) Secure opposite end of hose to unpressurized water source. (g) In mechanical room, position water system valves as follows: 1 Input valve prefilter - OPEN 2 Input valve postfilter - OPEN 3 Pump suction or tank fill directional flow valve - CLOSED to Pump Suction 4 Water flow direction valve - CLOSED to Water System 5 Main water feed from pump valve - OPEN 6 Water tank drain valve - CLOSED 7 Supply system valve - CLOSED 8 Water return drain valve - CLOSED 9 Water pump drain valve - CLOSED 10 Pump suction drain valve - CLOSED 11 Pump suction valve from water tank bottom - CLOSED (h) Open valve at supply source. (i) Place water pump controller pump switch to ON. (j) Open faucet at sink to purge air from system. (k) When solid stream of water is flowing, shut faucet and check system for leaks. (5) Operate Water System to Supply Water For Outside Use. (a) Open sink and water tank cam drains from under trailer. (b) Unlatch and open Water Inlet access door. (c) Connect garden hose adapter (1) to water system connector (2). (d) Attach 50-foot (15.25 m) garden hose to garden hose adapter (1). (e) Attach opposite end of hose to tank, container, etc. to be filled. (f) Position WATER OUT/IN valve (3) to the OUT position. (g) In mechanical room, position water system valves as follows: 1 Pump suction valve from water tank bottom - OPEN 2 Water tank drain valve - CLOSED 3 Water system drain valve - CLOSED 4 Return water drain valve - CLOSED 5 Water pump drain valve - CLOSED 6 Pump suction drain valve - CLOSED 7 Pump suction or tank fill directional control valve - CLOSED to Pump Suction 8 Water flow direction valve - CLOSED to Tank 9 Main water feed from pump valve - OPEN (h) Place water pump controller pump switch to ON.