Airmax
®
Aeration Systems are designed for low-maintenance and require minimal
scheduled maintenance. Cabinet inlets and outlets should be kept free of debris and
weed growth allowing normal ventilation.
• Always unplug system before performing any maintenance or troubleshooting.
• Always unplug system and refer servicing to a qualified electrician when: cord is
damaged or frayed, compressor, power control, compressor fan, or other electrical
components are producing unusual noises or odors.
• Always use parts that are supplied or approved by Airmax
®
, Inc. Use of other parts
may result in poor performance and could create a hazardous situation.
**Local environmental conditions may require more frequent maintenance.
WARNING: Compressors are equipped with a thermal overload switch. If temperature
becomes high enough to trip the overload, the compressor will shut down. It will then
automatically start up when temperature decreases as long as power is applied.
4. Maintenance**
EVERY 3-6 MONTHS – Air Filter: Clean/replace air filter.
Cooling Fan: Check to ensure cooling fan is operating. Hot air should be pulled from the cabinet, not blowing
in.
Pressure Gauge: Mark pressure gauge upon initial start up. Check to verify pressure has not significantly
risen above or dropped below initial reading. Normal operation will range between 5-10psi.
Pressure Relief Valve: Check to ensure air is not escaping from valve and replace if needed.
EVERY 12-18 MONTHS – Maintenance Kit: It is recommended to install a maintenance kit every 12-18
months to ensure optimum performance.
EVERY 24-36 MONTHS – Membrane Sticks: We recommend inspecting and/or cleaning the membrane
diffuser sticks every 24-36 months, or anytime the pressure gauge reading is significantly higher than normal
or there is a reduction in bubbles from the diffuser. To clean, use Airmax
®
Fountain & Aeration Cleaner
(#530298) and a soft cloth.
5. Troubleshooting
IF COMPRESSOR IS NOT OPERATING:
ISSUE CHECK LIKELY CAUSE CORRECTION
Cabinet fan is not running.
Option 1: Check for power. Compressor and fan are not receiving power.
Open cabinet and ensure the compressor and fan are plugged
into the power outlet. For PS20-PS80 systems, also ensure the
power switch is on.
Option 2: GFCI circuit tripped.
Damage to electrical cord or low voltage from power
supply.
Contact Airmax
®
or local dealer for electrical
troubleshooting assistance.
Option 3: GFCI circuit not tripped. GFCI malfunction.
Cabinet fan is running.
Option 1: Check compressor for power. Compressor is not receiving power.
Open cabinet and ensure the compressor is plugged into the
power outlet.
Option 2: Check compressor capacitor wiring for frays
or poor connections.
Wiring loosened or was damaged during shipment or
maintenance.
Contact Airmax
®
or local dealer for repair/replacement.
Option 3: No capacitor wiring issues can be seen. Bad capacitor.
Option 4: Capacitor has been replaced. Compressor is bad.
IF COMPRESSOR IS OPERATING:
ISSUE CHECK LIKELY CAUSE CORRECTION
No bubbles at any diffusers.
Option 1: No air leaks are audible in cabinet.
Compressor running louder and possible
excessive vibration.
Compressor air filter is dirty/clogged. Clean or replace air filter. NEVER re-install wet filter.
Option 2: Compressor operating normally or making
unusual noises. Exhibits reduced pressure
and/or air flow.
Compressor needs maintenance kit and possibly new
air filter.
Contact Airmax
®
or local dealer with specifications for
maintenance kit. Clean or replace air filter. NEVER re-install
wet filter.
No bubbles at some diffuser plates.
Option 1: Check for leaks at all connections in line
and in cabinet. If none are audible, carefully
spray SMALL amount of soapy water onto
connections and look for bubbles.
Vibration loosened connection or cracked fitting.
Tighten loose connection or replace cracked fitting
as necessary.
Option 2: Are all flow control valves in compressor
wide open?
Improper “balancing” of diffusers.
Adjust air flow valves on manifold in cabinet until all diffusers
operate properly. See Section 2. System Installation for
more information.
Option 3: Valves in cabinet are properly “balanced” and
no leaks are evident.
Compressor beginning to lose compression and needs
maintenance kit.
Contact Airmax
®
or local dealer with compressor specifications
for maintenance kit.
Large rolling bubbles instead of fine
bubbles at surface above one or more
diffuser plates.
Inspect each diffuser plate for malfunction.
Diffuser membrane damaged, diffuser plate fitting broken or
diffuser plate is flipped over.
Contact Airmax
®
or local dealer for repair/replacement.
Air coming out of pressure
relief valve.
Option 1: High pressure reading on gauge. Inspect
diffuser plates and tubing for clogging.
Diffuser maintenance needed.
Remove any overgrowth around diffuser membrane surface.
See Section 4. Maintenance for more information.
Option 2: Low pressure reading on gauge. Diffuser
plates not clogged.
Bad pressure relief valve. Contact Airmax
®
or local dealer for repair/replacement.
Compressor stops working for periods of
time, then restarts.
Inspect cooling fan for proper function. Compressor over-heating due to bad cooling fan.
Contact Airmax
®
or local dealer for fan replacement. If possible,
leave top of cabinet open for cooling. Otherwise, unplug system
until fan is replaced.
Compressor shakes erratically and is
making loud noises.
Option 1: Check for low voltage while compressor is
running.
Gauge of supply wires to circuit possibly undersized or
cabinet is plugged into extension cord.
If gauge of circuit wiring is incorrect, have electrician replace.
NEVER use extension cord to operate system for continual use.
Option 2: Check for clogged air filter. Air filter in need of replacement. Clean or replace air filter. NEVER re-install wet filter.
ENGLISH
Watch the Maintenance Kit
How-To Video at
airmaxeco.com/PondSeriesAeration
8
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