NAKS SF7 Handleiding
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BELT DRIVE
SUPPLY FANS
OPERATION INSTRUCTIONS AND PARTS MANUAL
MODELS: SF5, SF5-3PH, SF7, SF7-3PH, SF8, SF8-3PH, SF9, SF9-3PH, SF10, SF10-3PH
GENERAL SAFETY
Rotating parts, (pulleys, shafts and belts) on fans should not be exposed. Where these components are not protected by ductwork, cabinets
or covers, appropriate guards should be employed to restrict exposure to rotating parts. Access doors should not be opened with the fan
operating to avoid foreign objects being drawn into the system. On initial start-up, a careful inspection should be carried out to ensure no
foreign material is present which could become airborne in the system.
Read installation and operation instructions carefully before attempting to install, operate or service NAKS SF Series Blowers. Failure to
comply with instructions could result in personal injury and/or property damage. Retain instructions for future reference.
BEFORE YOU BEGIN
Inspect unit for damage, report any shipping damage to carrier. Check all fasteners, re-tighten as required. Rotate the blower wheel by
hand to ensure free rotation. If rubbing occurs, loosen the set screw(s), re-position the wheel to the shaft center, re-tighten set screws.
INSTALLATION
Remove hood and filters from inside the cabinet. Caulk top of curb before setting unit in place. (Curb must be smaller than unit “A”
dimension). Secure unit to curb through holes located around the bottom of the unit. Tighten wheel set screw.
A
A
F
E
F
G
D
H
BOTTOM VIEW
SIZE QUANTITY
SF5 / SF5-3PH
SF7 / SF7-3PH
22" 24" 11 7/8" 13 1/4" 4 7/16" 3 1/4" 6 7/8" 16" 18 1/8" 19 7/8" 16" x 25" x 1" 1 21 7/8" x 21 7/8" TBA
SF8 / SF8-3PH
SF9 / SF9-3PH
32" 32" 13 3/4" 15 7/8" 8 1/16" 4 1/4" 14" 25" 24 5/8" 25" 16" x 25" x 1" 2 31 7/8" x 31 7/8" TBA
SF10 / SF10-3PH 32" 32" 16 1/8" 18 7/8" 6 9/16" 3 7/8" 12 7/8" 25" 24 5/8" 25" 16" x 25" x 1" 2 31 7/8" x 31 7/8" TBA
UNIT WEIGHT (LBS)
(without motors & drives)
HLMZ
FILTERS
*INSIDE
CABINET
ABDEFGMODEL
2017 Page 1 of 4
AA
B
Z
L
REMOVE CAP FOR
FILTER ACCESS
2"
Ø5/16" HOLES
FOR FASTENING
TO CURB
M
MOTOR, PULLEYS & BELTS (See Table next page)
1. Mount the blower pulley on the blower shaft and tighten the set screw securely on the key of the shaft.
2. Mount the motor pulley on the motor shaft. Leave some clearance between the pulley and the motor end bell. Tighten the set screws
on the key of the motor shaft.
3. Install the motor on the motor platform using the hardware provided.
4. With the platform in its minimum position, install the V-belt within the pulley grooves. Position the motor on the motor platform to
ensure proper pulley alignment (see Figure 1) and secure to the motor platform. (A straight edge across the face of the driven pulley
should be parallel to the belt once proper alignment has been achieved).
Note: Adjustments in the variable speed pulley require pulley re-alignment.
*Curb size to be smaller than inside cabinet to allow for flashing and roofing.
**Includes filter section
5. Pivot the motor platform to tension the V-belt and lock in place using the 2 bolts on both sides of the blower. (Ideal belt tension
is the lowest tension at which the belt will not slip during start up.) As shown in illustration to right, a proper deflection of 1/64 of
the belt span is desired for belt tension.
5"
6" 7" 8" 9" 10" 12"
824-1125 RPM680-929 RPM 580-792 RPM 505-690 RPM447-611 RPM401-548 RPM 533-455 RPM
4L39 4L41 4L42 4L44 4L46 4L47 --
4L42 4L44 4L46 4L47 4L49 4L51 --
-- -- -- -- 4L55 4L57 4L60 56 FRAMESF10 / SF10-3PH
BLOWER MODEL
3 1/4 CAST IRON BLOWER PULLEY - DIAMETER & RPM RANGE
BELT LENGTH
BASED ON
MOTOR FRAME
SF5 / SF5-3PH
SF7 / SF7-3PH
48 FRAME
SF8 / SF8-3PH
SF9 / SF9-3PH
Motor Pulley
Cast Iron
Blower Pulley
Cast Iron
RPM
Range
SF5 and SF7SF8 and SF9SF10
BELT LENGTH
BASED ON
MOTOR FRAME
HB47T 1630 - 1232 B39 B43
--
HB57T 1329 - 1005 B41B44
--
HB67T 1121 - 848B43B46
--
HB77T 969 - 733
B44 B48 B52
HB87T 854 - 645B46B49B54
HB97T 763 - 577 B48 B51 B56
HB107T 690 - 521 B50 B53 B58
HB117T 629 - 476 B51 B55 B59
HB127T 578 - 437 B53 B55 B61
HB137T 535 - 404 B55 B58 B63
HB157T466 - 352 B59 B62
--
HB187T 390 - 295 B65 B68
--
HB77T
756 - 568 -- --
B51
HB87T
667 - 500 -- --
B53
HB97T
596 - 447 -- --
B55
HB107T
538 - 404-
- --
B56
HB117T
491 - 368 -- --
B58
HB127T
452 - 339 -- --
B60
HB137T
418 - 314-- --
B62
HB157T
364 - 372 -- -- --
HB87T 854 - 645 -- -- --
HB97T
763 - 577 -- -- --
HB107T
690 - 521 -- -- --
HB117T
629 - 476 -- -- --
HB127T
578 - 437 -- -- --
HB137T
535 - 404-- -- --
HB157T
466 - 352 -- -- --
HB187T
390 - 295 -- -- --
HB117T
828 - 686 --
-- --
HB127T
756 - 618 -- -- --
HB137T
697 - 575 -- -- --
HB157T
616 - 509 -- -- --
12.4 X 2B
830 - 700 -- -- --
13.6 X 2B
759 - 631 -- -- --
D8600 O.D. 6"
DOUBLE GROOVE
213, 215T
FRAME
IVL44
O.D. 4.15"
48 FRAME
(ADD 1" FOR 56 FRAME)
MODELS SF10
143, 145T FRAME
8325
O.D. 3.25"
143T & 145T
FRAME
8400
O.D. 4.15"
182, 184T FRAME
(DEDUCT 2" FOR 56, 143,
& 145T)
8550
O.D. 5.35"
182, 184T FRAME
(DEDUCT 2" FOR 56, 143,
& 145T)
BELT DRIVE SUPPLY FANS
2017 Page 2 of 4
MOTOR, PULLEYS & BELTS (See Table below)
t
t
w
A
WARNING
EXCESSIVE BELT TENSION IS THE MOST FREQUENT CAUSE OF BEARING WEAR AND RESULTING NOISE.
PROPER BELT TENSION IS CRITICAL FOR QUIET EFFICIENT OPERATION.
Ideal belt tension is the lowest value under which belt slip will not occur at peak load conditions.
BELT ALIGNMENT
FIGURE 1
XX
FOR FRACTIONAL HP APPLICATIONS "4L" BELTS MAY BE SUBSTITUTED BY ADDING 2" TO THE SPECIFIED "B" BELTS. Eg. B50 BELT = 4L52
Product specificaties
| Merk: | NAKS |
| Categorie: | Afzuigkap |
| Model: | SF7 |
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