Handleiding
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MAINTENANCE
1. Under normal usage, no spare parts are expected to be
required for one year of operation. Recommended spare
parts are shown on pages 4 and 5.
2. CAUTION: Before proceeding, make sure electrical service
to fan is locked in “OFF” position.
WINDMILLING: Even when the power supply is locked out,
fans may cause injury or damage if the impeller is subject to
“windmilling” which is the turning of the impeller and drive
components due to a draft in the system. To guard against
this hazard, the impeller should be secured to physically
restrict rotational movement.
3. Motor bearings are prelubricated. Consult information
printed on motor for lubrication instructions.
4. REGULAR MAINTENANCE: Determined by the condition
of the air passing through the fan, regularly scheduled
inspection of all fan parts establishes a good maintenance
routine. When the air is clean, maintenance can be as
infrequent as once a year. When air is contaminated with
grease vapors from cooking operations, maintenance may
be required as often as once a week. Regular maintenance
should include inspection and cleaning of all fan parts to
remove all grease and other foreign particles from the entire
wheel surface including blades and front and back plates.
WARNING! Care must be taken when cleaning the wheel to
remove grease and other foreign particles. Damage to the
wheel can occur if it is hit or if pressure is applied causing
the wheel to be distorted. Either case can cause serious
vibration and damage to the fan.
SET SCREW TIGHTENING SCHEDULE
1. Before initial operation of the fan, tighten set screws
according to the procedure outlined below.
2. After 500 operating hours or three months, whichever comes
rst, tighten set screws to the full recommended torque.
3. At least once a year, tighten set screws to the full
recommended torque.
PROCEDURE FOR TIGHTENING SET SCREWS
IN BEARINGS AND HUBS
One Set Screw Application
Using a torque wrench, tighten the set screw to the torque
recommended in Table 1.
Two Set Screw Application
1. Using a torque wrench, tighten one set screw to half of the
torque recommended in Table 1.
2. Tighten the second set screw to the full recommended
torque.
3. Tighten the rst set screw to the full recommended torque.
VARIABLE FREQUENCY DRIVES AND MOTORS
There are occasions when a Variable Frequency Drive (VFD) will
cause poor motor performance and possible damage. To avoid
these problems, the Company recommends the following:
1. Select compatible motor and VFD inverter; if possible, the
motor and the inverter should be from the same manufacturer
or at least the inverter selected should be recommended by
the motor manufacturer.
2. A motor shaft grounding system should be used to prevent
motor bearing damage from eddy currents.
NOTE: The Company will not honor motor warranty claims if
the customer fails to follow these recommendations.
Table 1. Recommended Tightening Torque for Set Screws
Set Screw Diameter Torque (in-lbs)
#10 35
1/4 80
5/16 126
3/8 240
7/16 384
1/2 744
9/16 1080
5/8 1500
3/4 2580
7/8 3600
1 5400
______________________________________________________________________________________________________________________________
2017 © North American Kitchen Solutions
172 Reaser Court
Elyria, OH 44035
www.naksinc.com
Page 3 of 7
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Productinformatie
| Merk | NAKS |
| Model | 28D-2200-FF |
| Categorie | Afzuigkap |
| Taal | Nederlands |
| Grootte | 946 MB |
