80446693 Rev. B
EN-17
EN
3. INSTALLATION
3.4.3 Prepare, locate and connect a blower
supported by mounting feet
WARNING
Use suitable lifting equipment to move the blower.
If you do not, you can injure yourself or damage the
blower. Refer to Section 2.2 for the mass of the blower.
You must provide a firm, level platform for the blower. Ensure
that the operating location is clean and free from debris and
oil.
You must ensure that when the blower is in its required
operating location, all of the mounting feet (1, 2 or 4,
depending on the blower model) are flat on the mounting
platform to within 0.1 mm.m ¯1 (0.0013 inch.ft ¯1 ).
Use the following procedure to prepare, locate and connect
the blower:
1.
Refer to Figure 1. Attach suitable lifting equipment to
the four lifting-bolts (1), then use the lifting equipment
to move the blower to its required operating location.
2.
Disconnect your lifting equipment from the blower. If
required, remove the lifting-bolts from the blower.
3.
Fit suitable bolts through the fixing holes in the
mounting feet (Figure 1, items 9), to secure the blower
in position.
4.
Clean the rotors: refer to Step 1 of Section 3.4.2.
5.
Use a suitable gasket/seal* to connect your inlet
pipeline to the blower inlet (Figure 1, item 2).
6.
Use a suitable gasket/seal* to connect your outlet
pipeline to the blower outlet (Figure 1, item 3).
*Note
: Gaskets are available from
Ingersoll Rand
:
Contact your supplier or
Ingersoll Rand
for advice
•
3.5 Fill the blower with oil
Ensure that you use the correct grade of oil and that
the oil levels in the blower are correct. If you do not, the
blower will probably be damaged during operation, or
its performance may be affected.
1.
Drain the protective oil from the drive end and non-
drive end covers: refer to Section 5.5.
2.
Refer to Figure 1. Fill the drive end cover (4) with oil:
refer to Section 5.5.1.
3.
Fill the non-drive end cover (12) with oil: refer to
Section 5.5.2.
3.6 Fit the drive/transmission
WARNING
You must fit suitable guards to protect people from
rotating/moving parts.
Your drive and transmission system design must ensure
that the maximum blower rotational speeds specified in
Section 2.3 cannot be exceeded, otherwise the blower
will be damaged, or may not operate correctly.
You must use a suitable coupling or a belt drive and
transmission system to connect your drive to the blower.
Your drive and transmission system design must ensure that
the radial and axial loadings on the blower drive shaft are as
low as possible.
Note:
For this, the blower pulley diameter must be above
diameters specified in Table 13, linear speed of belts should not
exceed 31 m/s and transmission safety factor should be between
1,4 and 1,7.
Connect the components of the drive and transmission
system to the blower drive shaft (Figure 1, item 5) as
described in the manufacturer’s instructions supplied with
the components.
Blower
Minimum pully diameter for specified differential pressure : mm (inch)
“300 mbar
3 x 104 Pa
4,35 psi”
“400 mbar
4 x 104 Pa
5,8 psi”
“500 mbar
5 x 104 Pa
7,25 psi”
“600 mbar
6 x 104 Pa
8,7 psi”
“700 mbar
7 x 104 Pa
10,15 psi”
“800 mbar
8 x 104 Pa
11,6 psi”
“900 mbar
9 x 104 Pa
13,05 psi”
“1000
mbar
1 x 105 Pa
14,5 psi”
NX 2
100 (3.94)
100 (3.94)
100 (3.94)
100 (3.94)
100 (3.94)
112 (4.41)
112 (4.41)
125 (4.92)
NX 3
100 (3.94)
100 (3.94)
100 (3.94)
112 (4.41)
112 (4.41)
125 (4.92)
125 (4.92)
150 (5.90)
NX 5
125 (4.92)
125 (4.92)
125 (4.92)
150 (5.90)
150 (5.90)
160 (6.30)
170 (6.69)
180 (7.09)
NX 8
140 (5.51)
140 (5.51)
150 (5.90)
160 (6.30)
170 (6.69)
180 (7.09)
180 (7.09)
200 (7.87)
NX 12
170 (6.69)
170 (6.69)
180 (7.09)
200 (7.87)
212 (8.35)
212 (8.35)
224 (8.82)
224 (8.82)
NX 18
150 (5.90)
150 (5.90)
160 (6.30)
170 (6.69)
180 (7.09)
200 (7.87)
200 (7.87)
224 (8.82)
NX 26
170 (6.69)
170 (6.69)
180 (7.09)
200 (7.87)
212 (8.35)
212 (8.35)
224 (8.82)
250 (9.84)
Table 13 - Minimum drive shaft pulley diameters
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