The Harris Smoke Pump is EASY to install.

Choose the proper size smoke fluid tank for your airplane.  Smoke fluid tanks should be assembled with 3 lines: tygon tubing is used to plum the tank & lines, 1 line for clunk, 1 line for vent, and 1 line for filling the tank.  The fill line should be bent to the bottom side of the tank.  This is so you can remove all the smoke fluid from your tank at the end of your flying day if you don’t pump the system dry during flight.  Install your tank on the center of gravity so your balance does not change with fluid capacity.  Mount the pump behind the smoke tank.  This ensures that in a high gravity maneuver the fluid will be forced to the pump and keep it primed.  Mount the pump with fittings in the vertical position.  Any fluid left in the line will keep the pump head properly lubed.   Cut a piece of foam rubber to mount the pump on.  Velcro the foam rubber to the pump then Velcro the other side down of the foam rubber to the airplane.  Secure the pump with 2 zip ties to the airframe.  Tighten the zip ties down but allow the pump to articulate a little.

*When you are looking at the pump head the intake (clunk) line goes to the left hand fitting and the exit line goes to the right hand fitting.   Install either a clunk filter or inline filter on the clunk line to filter the fluid before it enters the pump head. The exit line goes to the firewall area.  A check valve needs to be installed on the exit line close to the muffler.  The check valve keeps fluid right behind the muffler so the pump will not loose prime and you get instant smoke when you turn the system on.  The exit side of the check valve will attach to the smoke muffler fitting with a black piece of Neoprene tubing.  This is very important; Neoprene will not heat up and fall off.  Place a small piece of heat shrink over the neoprene & muffler fitting so every time the fitting gets hot the neoprene connection will keep tight and prevent a line coming off.

The Pump is set up to run on 2-cell LiPo 7.4 volts a 480- 800mAh pack.  It is not necessary to run any type of larger battery.  You can Velcro the small LiPo pack close to the pump.  A small 2 pin connector can be used to provide plug in power to the unit.  A switch can be added to provide on & off power to the pump also.  If you choose to have a switch.  For simplicity we plug the battery directly into the pump and unplug it at the end of the flying day.  The pump will not operate until the Tx and Rx are turned on.  When plugged in, the pump will give an audio beep every couple of minutes to let you know it has power.  The pumps control unit has a voltage cut off set for 2 cell batteries at 6 volts.  This will prevent over discharging the battery pack.