Johnson Controls Frick AcuAir - Filter Inspection; Unit Exterior Inspection; Maintenance Intervals Schedule

210.100-IOM (JUL 2021)
Page 49
AcuAir Hygienic Air Units
Maintenance
3. Inspect the blower belt tension. Tension the belts in
accordance with the included Blower Belt Tension
Guidelines. Visually inspect the belts for indications of
wear. Replace the belts if there is evidence of cracking,
fraying, or uneven wear.
Filters
Visually inspect the prelters, intermediate lters (if ap-
plicable) and nal lters (if applicable). If the prelter media
appears damaged in any way, or if the media becomes wet,
change the prelters immediately. If the intermediate lter
media, or nal lter media appears damaged, change the
lters immediately. Filters are normally replaced when the
static pressure drop through the media is double that of
new media or when the pressure drop reaches the level
indicated by the lter manufacturer. Original lter informa-
tion is provided in the AcuAir
®
project manual.
Unit exterior
1. Visually inspect the unit exterior. The seams between
panels are factory sealed with silicon, and must be
resealed if there appears to be any degradation of the
original seal. Repaint any scratches to the exterior of the
unit with the factory-supplied touch-up paint.
2. Verify the tightness of the door seals. If there is any
indication of air inltrating or escaping the unit through
the doors, adjust the door handles to provide a tighter
seal.
Maintenance intervals
Maintenance of the AcuAir
®
system is relatively easy if
sufcient consideration is given to the minimum mainte-
nance requirements for keeping air-handling units per-
forming to specication. Scheduled the maintenance using
the information in Table 14.
Before performing any maintenance or inspection, make
certain that all power has been disconnected, locked out,
and tagged correctly.
Table 14: Maintenance intervals
Type of service
Start-up Weekly Monthly Every 3
months
Every 12
months
Inspect general condition of the unit
n n
Clean debris from inside the unit
n n n
Check condition of and pressure drop across the prelters
n n n
Check condition of and pressure drop across the nal
lters
n n n
Check the condensation and washdown drains
n n
Inspect heat transfer components -
cooling and heating coils, and burner surfaces
n n
Inspect all dampers and lubricate damper bearings
n n
Inspect and adjust damper linkages
n n
Check and adjust fan belt tension
n n
Check gas burner operation and safeties
n n
Check the AHU for unusual noises or vibrations
n n
Check fan bearing locking collars
n n
Check motor electrical voltages and currents
n n
Check all temperature sensor calibrations
n n
Lubricate fan shaft bearings
n n
Lubricate motor base adjusting screws
n n
Lubricate the fan motors
n n
Check all fans for rotation without obstruction
n n
Check fans for correct direction of rotation
n n
Check the main fan Piezometers
n n
Inspect protective nish
n n n
Check unit access door seals
n n
Check and clean the smoke detector air lter and detec-
tor board
n n
Check the ammonia detector chemical sensor cell
n n
Check all interior wall and panel seam caulking
n n
Check the sealing putty of all electrical conduit open-
ings both inside the air handler and inside all electrical
enclosures.
n n