Product Manual

2
Important Safety Instructions
CAUTION
• Caution should be used when dealing with any
electrical equipment with moving parts.
• Extreme caution should be used around water,
especially cold water, such as in Spring, Fall,
and Winter, which poses a hazard in and of
itself.
• Running the system in freezing conditions may
create open areas of water in the ice at the
diffuser locations and also thin ice around the
area.
• Check your local laws and ordinances as some
areas require warning signs to be posted. The
owner will assume all risks with operating the
Robust-Aire System during winter months.
• Do not use waders in deep ponds/lakes or
ponds/lakes with drop-offs, drastic slopes, or
soft bottom material.
• Do not use boats that tip easily for installation,
such as a canoe, and follow all boating safety
rules and regulations, including wearing a PFD.
(Personal Flotation Device)
• Means for disconnection must be incorporated
inthexedwiringinaccordancewithlocaland
national wiring rules.
• Consultaqualiedelectricianforelectrical
installation.
Unit Specs
Model* Voltage # diffusers
# compressors
Total amps
RA1 120 1 1 3.6
RAH1 240 1 1 1.8
RA2 120 2 1 5.4
RAH2 240 2 1 3.0
RA3 120 3 1 5.4
RAH3 240 3 1 3.0
RA4 120 4 2 10.8
RAH4 240 4 2 6.0
RA5 120 5 2 10.8
RAH5 240 5 2 6.0
RA6 120 6 2 10.8
RAH6 240 6 2 6.0
*you may have a sufx at the end of your model. “NC”
stands for “no cabinet”. “PM” stands for “post-mount cabi-
net”. No sufx denotes the standard base-mount cabinet.
The specs should be used by your qualied electrician
to ensure properly sized circuits are installed. For all
RAH systems and systems RA1 - RA3, a dedicated 15
amp circuit is sufcient to supply power to the system.
For RA4 – RA6 systems, a dedicated 20 amp circuit is
recommended. For RA(H)4 – RA(H)6 systems (two
compressors and two fans), it may be useful to have
two dedicated 15 amps circuits available. This will
allow for one compressor/fan combination to continue
operating if the other compressor were to fail, be down
temporarily for maintenance or to allow sets to be run
intermittently during start-up to prevent a turn-over
(see start-up procedure for more info). Always consult
with a qualied electrician.
ROBUST-AIRE
®
DIFFUSER ASSEMBLY
Parts Included
• (1) Robust-Aire
®
Diffuser Assembly
• (1) Vent Plug
• (1) 3/8” Tubing Clamp
• (1) 5/8” Tubing Clamp
• (1) ½” NPT x 3/8” Barb Elbow
• (1) ½” NPT x 5/8” Barb Elbow
• (1) 3/8” Tubing Strain Relief
• (1) 5/8” Tubing Strain Relief
• (1) ¼”-20 x 1-3/8” Lg Hex Head Capscrew
• (2) ¼” Flat Washer
• (1) ¼”-20 Lock Nut
*Not all ttings will be used. Use 3/8” ttings with
3/8” SureSink ™ Aeration Tubing and 5/8” ttings
with 5/8” SureSink ™ Aeration Tubing.
Installation Tools & Materials
• 7/8” Open End Wrench or Pliers
• 20-30 lbs (.25-.375 cu.ft.) of pea gravel
• Length of ¼” – 3/8” nylon rope (or equivalent).
Rope length to be at least twice the water depth
• 7/16” socket wrench
• 7/16” box or open end wrench
• 5/16” Socket wrench or screwdriver
• PTFE thread sealant (teon tape)