NOVENCO ZERAX AZL-AZN-AZW, Руководство по установке и обслуживанию

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Novenco ZerAx axial fan types AZL-AZN-AZW – Installation and maintenance 18 of 30
8. Detach the motor from the motor shell by removing the nuts and bolts (figure 12, comp. 7a
and 7b) for hub sizes Ø350 and Ø560, or bolts and washers ( figure 12, comp. 7b and 7c) for
hub sizes Ø160.
Notice: Access nuts holding motors mounted in rear motor shells through the front motor
shells.
9. Remove the motor (figure 12, comp. 8).
6.8 Mounting of motor
The component numbers in the below procedure refer
to figure 12 on page 26.
Mounting of motor
1. Remount the motor (comp. 8) and make sure the
motor shaft is centred in the fan casing.
A centring tool is available as an accessory from
Novenco.
2. Fans with Ø350 hubs and motor sizes 160 or 180:
These motors are mounted with pins. The pins
must be replaced with new ones when re-
mounting the motors.
3. Insert and tighten the nuts and bolts (comp. 7a and 7b) to the prescribed torques for hub
sizes Ø350 and Ø560, or bolts and washers ( comp. 7 b and 7c) for hub sizes Ø160. See table 9
on page 26.
Notice: Access nuts holding motors mounted in rear motor shells through the front motor
shells.
4. Mount the rotor (comp. 6) on the motor shaft with a tool fastened in the threaded hole of
the motor shaft. The rotor hub must rest against the motor shaft collar.
5. Use a feeler gauge to check that the blade tip
clearance between the rotor blade tips and
fan casing is the same throughout the
circumference.
6. Adjust the motor position. See step 5.
7. Mount the centre washers and bolt (comp.
3).
8. Fans with hub clips: Mount the hub clip,
screws and washers (comp. 4).
9. Mount the hub cap (comp. 2) and screws
(comp. 1).
10. Connect the motor cable to the motor and the
power cables in the terminal box.
11. Reconnect any ducts.
Follow the procedure in section “5. Start of operation ” to start the fan.
Replace lock washers and nuts
during assembly.
Consult Novenco if the
replacement motor weight
exceeds the original
specifications. Refer to the technical
specifications from the AirBox
program.
Hub,
[mm]
Rotor,
ØD [mm]
Min.
[mm]
Hub,
[mm]
Rotor,
ØD [mm]
Min.
[mm]
Ø1
60
250 0.5
Ø5
60
1000 0.8
280 0.5 1120 0.9
315 0.5 1250 1.0
355 0.5 1400 1.1
400 0.5 1600 1.3
450 0.5 1800 1.4
500 0.5 2000 1.6
Ø3
50
500 0.5
Ø3
50
900 0.9
560 0.6 1000 1.0
630 0.6 1120 1.1
710 0.7 1250 1.3
800 0.8
Table 7.
Blade tip clearances at standard
temperatures