Winter Operation and Deeper Ponds
If fish are present in the pond, place the diffuser between the shallowest and deepest
portion of your pond. For instance, if the deepest part of your pond is 6' and the
shallowest is 1', place diffuser in the 2' - 3' range for wintertime operation. This will
prevent the water at the deepest portion from being mixed with colder water.
Maintenance
1. Always unplug unit before service, cleaning or any maintenance.
2. Over time the compressors may need to have the diaphragm or piston replaced. See
chart below for compressor repair kits.
Troubleshooting
Loss of air output but unit is running:
• Check to make sure the air filter has not been blocked or clogged by dust.
• Check to make sure lines are not kinked or plugged. If used in winter time, line may
have ice in the line. A small amount of rubbing alcohol can be run down the air line to
thaw the ice.
• Inspect the diffusers to ensure they are clean. Replace or clean as necessary. See
chart below for replacement diffusers.
• Inspect diaphragms/pistons. Replace as necessary.
Koi and Ornamental Pond Aeration Kit Components:
Kit
Compressor
Part # Compressor
Tubing
Diffusers
Repair Kits
LA5N
EPW2
15' Quick Sink
6" Rubber
(RAD6)
EPW2RKN
LA10N
EPW4
15' Quick Sink
8" Rubber
(RAD8)
EPW4RK
LA15N
EPW6
50' Quick Sink
2 - 12" Rubber
(RAD1250)
EPW6RK
LA20N
EPW10 100' Quick Sink
(2 rolls 50')
4 - 12" Rubber
(RAD1250)
EPW10RK
LA5W
ML28
15' Quick Sink
6" Rubber
(RAD6)
ML28RK
LA10W
ML45
15' Quick Sink
12" Rubber
(RAD12)
ML45RK
LA15W
ML80
15' Quick Sink
2 - 12" Rubber
(RAD1250)
ML80RK
Caution:
•
During operation, do not touch the lower housing with bare hands as the temperature will
become about 70ºC (158ºF). (Temperature will not affect the performance of the pump.) Thermal
overload will turn off the compressor when temperature gets too high. Unit will come back on
after it cools down. Causes for excess heat should be determined and eliminated. Common
causes include lack of ventilation and excess back pressure in the system. Remedies for these
causes should be found to avoid over heating of the units.
•
Proper sizing and selection of tubing, length of tubing, number of diffusers and depth of
diffusers are all important factors for maximizing performance. These units are designed to
produce fairly large volumes of air at low pressure. Extra back pressure created by restrictive
tubing, undersized or clogged diffusers, incorrect valve systems or deeper water can cause
excess wear and tear on the rubber diaphragms. While replacing the diaphragms is easy to do,
too much back pressure may require more frequent repair.
