Frick AcuAir, Manual

210.100-IOM (JUL 2018)

Page 47

ACUAIR

®

 HYGIENIC AIR UNITS

MAINTENANCE

2. Filters

a.  Visually  inspect  the  prefilters,  intermediate  filters  (if 

applicable) and final filters (if applicable). If the prefilter 

media appears damaged in any way, or if the media 
becomes wet, the 

prefilters  should  be  changed  im

-

mediately. If the intermediate filter media, or final filter 
media appears damaged, the filters should be changed 

immediately. Filters should normally be replaced when 
the static pressure drop through the media is double that 
of new media or when the pressure drop reaches the level 

recommended by the filter manufacturer. Original filter 

information is provided in the AcuAir project manual.

3. Unit Exterior

 a. Visually inspect the unit exterior. The seams between 

panels are factory sealed with silicon, and should be re-
sealed if there appears to be any degradation of the original 
seal. Any scratches to the exterior of the unit should be 
repainted with the factory supplied touch-up paint.

  b. Verify the tightness of the door seals. If there is any 

indication of air infiltrating or escaping the unit via the 

doors, the door handles should be adjusted to provide 
a tighter seal.

MAINTENANCE INTERVALS

Maintenance of the AcuAir

®

 system is relatively easy if 

sufficient consideration is given to the minimum maintenance 

requirements for keeping air-handling units performing 

to  specification.  These  can  be  easily  scheduled  using  the 

following “easy reference” preventative maintenance guide 
provided in the following 

Recommended Maintenance 

Intervals 

table.

Before performing any maintenance or inspection, make 
certain that all power has been disconnected, locked out, 
and tagged properly.

RECOMMENDED MAINTENANCE INTERVALS

SPARE PARTS RECOMMENDATIONS

Johnson Controls - Frick

®

 recommends that customers 

maintain an inventory of spare parts for the AcuAir air unit. 
By maintaining this inventory of spare parts, change-out 

requirements can be immediately satisfied during preventative 

maintenance inspections.

It is also advisable to reorder parts prior to taking existing 
spares from inventory. This policy helps prevents downtime 
due to “forgotten” spare parts order placement.

The type and recommended stock level for recommended part 

is listed in the order specific documentation provided after 

the AcuAir air unit is shipped from the factory.

TYPE OF SERVICE

START-UP

WEEKLY

MONTHLY

EVERY 3 

MONTHS

EVERY 12 

MONTHS

Inspect general condition of the unit

✔

✔

Clean debris from inside the unit

✔

✔

✔

Check 

condition of and pressure drop across the prefilters

✔

✔

✔

Check condition of and pressure drop across the final filters

✔

✔

✔

Check the condensation and washdown drains

✔

✔

Inspect heat transfer components
(Cooling and heating coils, and burner surfaces)

✔

✔

Inspect all dampers and lubricate damper bearings

✔

✔

Inspect and adjust damper linkage(s)

✔

✔

Check and adjust fan belt tension

✔

✔

Check gas burner operation and safeties

✔

✔

Check the AHU for unusual noises or vibrations

✔

✔

Check fan bearing locking collars

✔

✔

Check motor electrical voltages and currents

✔

✔

Check all temperature sensor calibrations

✔

✔

Lubricate fan shaft bearings

✔

✔

Lubricate motor base adjusting screws

✔

✔

Lubricate the fan motors

✔

✔

Check all fans for rotation without obstruction

✔

✔

Check fans for proper direction of rotation

✔

✔

Check the main fan Piezometer(s)

✔

✔

Inspect protective finish

✔

✔

✔

Check unit access door seals

✔

✔

Check & clean the smoke detector air filter & detector board

✔

✔

Check the ammonia detector chemical sensor cell

✔

✔

Check all interior wall and panel seam caulking

✔

✔

Check the sealing putty of all electrical conduit openings 
both inside the air handler as well as inside all electrical 
enclosures.

✔

✔