Use and Care Manual

Model T28798 (Mfd. Since 01/20)
-25-
To clean impeller and inspect motor shaft:
1.
DISCONNECT MACHINE FROM POWER!
2. Put on NIOSH-approved respirator, ANSI-
approved safety goggles, and leather gloves.
3.
Remove (8) flange bolts from motor mounting
plate (see Figure 31).
Cleaning Impeller
The impeller normally requires no maintenance,
but the blades can accumulate metal dust that
can adversely affect impeller balance. Removing
the motor/impeller assembly allows cleaning and
inspection of the impeller blades.
Tools Needed Qty
Open-End Wrench 10 x 12mm .......................... 1
Soft Bristle Brush
.............................................. 1
Shop Vacuum with HEPA Filter
and Non-Conductive Hose
................................ 1
NIOSH-Approved Respirator
............................. 1
ANSI-Approved Safety Goggles
........................ 1
Leather Gloves
...........................................1 Pair
4. Remove motor/impeller assembly and care-
fully set it on capacitor covers (see Figure 32).
Figure 31. Flange bolts secure the motor/
impeller assembly to the cabinet.
x 8
Motor
Capacitor Covers
Motor
Mounting
Plate
5. Use a soft bristle brush and dry rag to remove
dust from impeller blades and impeller hous-
ing. DO NOT use compressed air or your
bare hands. Serious injury can occur if it
enters the blood stream. Inspect impeller for
damage and replace if necessary.
— Use only NFPA 484-compliant shop vac-
uum with HEPA filter and non-conductive
hose to vacuum debris inside housing. DO
NOT use compressed air. Dust particles
can become airborne and cause injury.
6.
Replace motor/impeller and secure with
flange bolts.
Figure 32. Motor/impeller assembly removed for
cleaning and inspection.
Impeller
Cleaning Ducts
Inspect all ducts and fittings monthly and clean as
necessary.
To clean inside ducts:
1.
DISCONNECT MACHINE FROM POWER!
2.
Wear NIOSH-approved respirator, ANSI-
approved goggles, and leather gloves.
3.
Undo clamps to disconnect ducts and fittings.
Use soft bristle brush and dry/damp rag to
remove accumulated metal dust.
4.
Reconnect ducts and secure clamps.