OM0302
Rev 2/December 2020
Page 52 of 107
b. To remove the Exhaust HEPA:
1. Relax the exhaust filter seal loading mechanism by turning the four threaded bolts
counterclockwise until one can see a definite release of the loading springs.
2. Pull the exhaust choke tray free and remove the filter. It is not necessary to remove the
tray, although it is free to move forward several inches, if necessary, to free the HEPA filter.
Step 4: Filter Installation
When installing new filters,
USE ONLY NUAIRE SPECFIED FILTERS FOR REPLACEMENT.
a. To install the supply filter, simply reverse the procedure outlines in Step 3a, above.
Note:
Be sure to open the choke plate fully before inserting the filter into the tray.
This will assist in adjusting the airflow.
b. To install the exhaust filter, apply a thin layer of silicone grease to the top and bottom gaskets of the
filter and carefully insert into the exhaust choke tray.
Position the filter frame within the outside walls of the exhaust opening on the top of the hood.
Tighten the spring loaded bolts, 4 places, depressing the gasket material by 1/8 inch (3mm)
Step 5: Motor/Blower Assembly Removal
a. It is recommended that the motor/blower to be removed as a single unit. To remove, disconnect
electrical connections to the motor, remove the HEPEX pressure plenum and unbolt the
motor/blower assembly from the roof of the cabinet (4 places). Always inspect the rubber isolation
motor mounts and replace those that are cracked or visibly show stress.
b. Replace the motor exactly as originally installed in the blower housing, paying particular attention to
the correct electrical connections (see Electrical Schematic).
c. Re-install the new motor/blower assembly.
Description:
Primary HEPA Prefilter
NuAire Part Number: 980-000023
Efficiency:
99.995% @ 0.3 Micron
Filter Manufacturer: Camfil Farr
Airflow Rating:
270 cfm @ 0.52 + .05 w.g. per sq. ft.
Primary HEPA Prefilter Quantities:
Frame Type:
Plastic Wedge Canister
400 (5), 500 (6), 600 (8)
Description:
Secondary Supply HEPA Filter
Secondary Exhaust HEPA Filter
Efficiency:
99.99% @ 0.3 Micron
99.99% @ 0.3 Micron
Airflow Rating:
100 fpm @ .48
±
.05" w.g. per sq. ft.
250 fpm @ .45
±
.05" w.g. per sq. ft.
Frame Type:
Metal
Metal
NU-581-400
NuAire Part Number: A-980957-06
A-980957-18
Filter Size:
21" (533mm) x 44" (1118mm) x 3" (76mm)
20" (508mm) x 22” (559mm) x 11 1/2" (292mm)
Filter Manufacturer:
Camfil Farr
Camfil Farr
NU-581-500
NuAire Part Number: A-980957-07
A-980957-19
Filter Size:
21" (533mm) x 56" (1422mm) x 3" (76mm)
20" (508mm) x 30" (762mm) x 11 1/2" (292mm)
Filter Manufacturer:
Camfil Farr
Camfil Farr
NU-581-600
NuAire Part Number: A-980957-08
A-980957-20
Filter Size:
21" (533mm) x 68" (1727mm) x 3" (76mm)
20" (508mm) x 36" (914mm) x 11 1/2" (292mm)
Filter Manufacturer:
Camfil Farr
Camfil Farr
Содержание LabGard NU-581-400
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