there are the instructions for the SCWD
SCWD=
Switching
Current
Water
Device
Installation:
There are many ways to install you new SCWD. The following instructions reflect the preferred method of installation. In addition, even though your new SCWD is not overly sensitive to the normal particulate and debris found in aquarium systems, to ensure long life, water must be filtered prior to entering the SCWD.
- Measure and cut two pieces of 3/4" (ID) hose for the two outlets. For best results, it is strongly recommended that both outlet hoses are cut equal in length, leaving the SCWD centered between the two outlets.
- Measure and cut one piece of 3/4" (ID) hose that will be connected to the water pump, canister filter, or powerhead outlet at one end and the SCWD inlet on the other. It is recommended that an inline valve be installed between the water pump and the SCWD to allow for flow adjustment, and for ease of removal and cleaning of the outlet hoses if required.
- Install each hose on each outlet of the SCWD by applying firm, but even pressure, until each hose is fully seated. It is recommended at this point that you install worm clamps for added protection against leaks and the possibility of the hose coming loose. Do not over-tighten the worm clamps.
- Install the inlet hose using the same operations noted in Step 3, paying close attention not to exert too much force on the nipple.
- Once all hoses are mounted and clamped, you are now ready to install the outlet elbows and nozzles on each end of the outlet hoses. By combining rigid elbows to form an angle over the aquarium side you can adjust the position of the outlet nozzles to give you the desired current affect. The configuration of the elbow is such that it will hang over the back of the tank on both sides like an upside down "U." At this time, you should support the SCWD by mounting or hanging the SCWD from the back of your tank using bendable wire.
- Connect the inlet hose with the inline valve to your pump, canister filter, or powerhead outlet. Be sure to use a worm clamp to avoid any potential leakage.
Operation:- Make certain the SCWD is securely installed before operation. Open the in-line valve between the water pump and your SCWD so that it is approximately half open. This is as precautionary step to prevent a full force surge to the SCWD when using some of higher volume and pressure pumps.
- Apply power to the water pump. Verify water outlets are expelling water and that there are no leaks at any of the connections. Verify that the device is switching water flow between the two outlets. Now, open the in-line valve to your desired flow.
Remember that switching speed and current duration are dependent on the volume of water flowing through the SCWD. Higher volume pumps will naturally cause a quicker switching response than lower volume pumps. By adjusting your inline valve you will be able to regulate both the amount of flow and the switching speed.
Troubleshooting
Symptom: Switching speed too slow.
Remedy: Check pump for proper flow/pressure rating.
Symptom: Switching speed inconsistent.
Remedy: Check hoses for algae and slime obstructions.
Symptom: SCWD is noisy or stops abruptly, stops and starts sporadically.
Remedy: Foreign debris is lodged in switching mechanism. Flush out unit to dislodge debris. Verify pre-filter is installed and is not clogged or restricting flow.
