MK Plastics DHK-NW IO&M - Manual (Page 7)

M.K. Plastics Corp. Montréal, Québec www.mkplastics.com Page. 7
Size
Pillow Block
Bearing
Set Screw /
Bearing Cap
Bolt Torque
Mounting Bolt
304 SS Bolt
Torque
316 SS Bolt
Torque
1225 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1500 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1825 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2225 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2450 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 1.75L 517 in-lbs 542 in-lbs
2700 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
3000 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3300 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3650 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
4025 NSK,SNN,2-7/16 673 in-lbs 5/8-11UNC, 2.75L 1110 in-lbs 1160 in-lbs
4450 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
4900 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
5425 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
6000 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
Tapered
Bushing
Cap Screw Torque
MSK
Bushing
Cap Screw Torque
QT 1/4-20UNC 108 in-lbs H 1/4 x 3/4 95 in-lbs
JA No.10-24UNC 60 in-lbs P 5/16 x1 192 in-lbs
SH-SDS-SD 1/4-20UNC 108 in-lbs Q 3/8 x 1-1/4 348 in-lbs
SK 5/16-18UNC 180 in-lbs R 3/8 x 1-3/4 348 in-lbs
SF 3/8-16UNC 360 in-lbs S 1/2 x 2-1/4 840 in-lbs
E 1/2-13UNC 720 in-lbs U 5/8 x 2-3/4 1680 in-lbs
F 9/16-12UNC 1320 in-lbs W 3/4 x 3 3000 in-lbs
J 5/8-11UNC 1620 in-lbs
M 3/4-10UNC 2700 in-lbs
N 7/8-9UNC 3600 in-lbs P1-P3 5/16-18 UNC 80 in-lbs
P 1-8UNC 5400 in-lbs Q1-Q3 3/8-16 UNC 143 in-lbs
W 1-1/8-7UNC 7200 in-lbs
S 1-1/4-7UNC 9000 in-lbs
Bushing Tightening for Aluminum Hub
Table 3 - Fan Bearing Torque
Size
Pillow Block
Bearing
Set Screw /
Bearing Cap
Bolt Torque
Mounting Bolt
304 SS Bolt
Torque
316 SS Bolt
Torque
1225 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1500 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1825 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2225 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2450 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 1.75L 517 in-lbs 542 in-lbs
2700 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
3000 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3300 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3650 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
4025 NSK,SNN,2-7/16 673 in-lbs 5/8-11UNC, 2.75L 1110 in-lbs 1160 in-lbs
4450 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
4900 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
5425 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
6000 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
Tapered
Bushing
Cap Screw Torque
MSK
Bushing
Cap Screw Torque
QT 1/4-20UNC 108 in-lbs H 1/4 x 3/4 95 in-lbs
JA No.10-24UNC 60 in-lbs P 5/16 x1 192 in-lbs
SH-SDS-SD 1/4-20UNC 108 in-lbs Q 3/8 x 1-1/4 348 in-lbs
SK 5/16-18UNC 180 in-lbs R 3/8 x 1-3/4 348 in-lbs
SF 3/8-16UNC 360 in-lbs S 1/2 x 2-1/4 840 in-lbs
E 1/2-13UNC 720 in-lbs U 5/8 x 2-3/4 1680 in-lbs
F 9/16-12UNC 1320 in-lbs W 3/4 x 3 3000 in-lbs
J 5/8-11UNC 1620 in-lbs
M 3/4-10UNC 2700 in-lbs
N 7/8-9UNC 3600 in-lbs P1-P3 5/16-18 UNC 80 in-lbs
P 1-8UNC 5400 in-lbs Q1-Q3 3/8-16 UNC 143 in-lbs
W 1-1/8-7UNC 7200 in-lbs
S 1-1/4-7UNC 9000 in-lbs
Bushing Tightening for Aluminum Hub
Size
Pillow Block
Bearing
Set Screw /
Bearing Cap
Bolt Torque
Mounting Bolt
304 SS Bolt
Torque
316 SS Bolt
Torque
1225 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1500 RHP, MP1 60 in-lbs 3/8-16UNC, 1.75L 236 in-lbs 247 in-lbs
1825 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2225 RHP, MP1-7/16 110 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
2450 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 1.75L 517 in-lbs 542 in-lbs
2700 NSK,SNN,1-11/16 389 in-lbs 1/2-13UNC, 2.25L 517 in-lbs 542 in-lbs
3000 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3300 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
3650 NSK,SNN,2-3/16 673 in-lbs 5/8-11UNC, 2.5 L 1110 in-lbs 1160 in-lbs
4025 NSK,SNN,2-7/16 673 in-lbs 5/8-11UNC, 2.75L 1110 in-lbs 1160 in-lbs
4450 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
4900 NSK,SNN,2-15/16 1682 in-lbs 3/4-10UNC, 3 L 1530 in-lbs 1582 in-lbs
5425 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
6000 NSK,SNN,3-7/16 3275 in-lbs 1-8UNC, 3.75L 3400 in-lbs 3595 in-lbs
Tapered
Bushing
Cap Screw Torque
MSK
Bushing
Cap Screw Torque
QT 1/4-20UNC 108 in-lbs H 1/4 x 3/4 95 in-lbs
JA No.10-24UNC 60 in-lbs P 5/16 x1 192 in-lbs
SH-SDS-SD 1/4-20UNC 108 in-lbs Q 3/8 x 1-1/4 348 in-lbs
SK 5/16-18UNC 180 in-lbs R 3/8 x 1-3/4 348 in-lbs
SF 3/8-16UNC 360 in-lbs S 1/2 x 2-1/4 840 in-lbs
E 1/2-13UNC 720 in-lbs U 5/8 x 2-3/4 1680 in-lbs
F 9/16-12UNC 1320 in-lbs W 3/4 x 3 3000 in-lbs
J 5/8-11UNC 1620 in-lbs
M 3/4-10UNC 2700 in-lbs
N 7/8-9UNC 3600 in-lbs P1-P3 5/16-18 UNC 80 in-lbs
P 1-8UNC 5400 in-lbs Q1-Q3 3/8-16 UNC 143 in-lbs
W 1-1/8-7UNC 7200 in-lbs
S 1-1/4-7UNC 9000 in-lbs
Bushing Tightening for Aluminum Hub
Table 4 - Bushing and Pulley Torque
Grounding Straps
If supplied with a Graphite Liner, a
grounding strap is provided on the
bottom of the scroll housing for the
removal of static electricity. This strap
must be connected to the building
electrical grounding circuit or the
roof steel structure. If an Aegis shaft
grounding ring is supplied on the
motor, the motor support stand should
also be grounded.
Operational Checklist
Final Installation
F Inspect fasteners and setscrews, particularly fan
mounting and bearing fasteners, and tighten according
to the recommended torque shown in Tables 3 & 4.
F Inspect for correct voltage with voltmeter.
F Ensure all accessories are installed.
Pre-Start Checks
F Shut off all primary and secondary power sources.
F Ensure fasteners and setscrews are tightened.
F Inspect belt tension and pulley alignment.
F Inspect motor wiring.
F Ensure belt touches only the pulleys.
F Ensure fan and ductwork are clean and free of debris.
F Inspect wheel-to-inlet clearance.
F Close and secure all access doors.
F Restore power to the fan.
Start Up
Turn the fan on. In variable speed units, set the fan to its
lowest speed and inspect for the following:
F Direction of rotation.
F Excessive vibration.
F Unusual noise.
F Bearing noise.
F Improper belt alignment or tension (listen for squealing).
F Improper motor amperage or voltage.
If a problem is discovered, immediately shut the fan off. Lock
out all electrical power and check for the cause of the trouble.
See Troubleshooting.
Inspection
Inspection of the fan should be conducted at the first
30 minute, 8 hour and 24 hour intervals of satisfactory
operation. During the inspections, stop the fan and inspect.
F 30 Minute Interval: Inspect bolts, setscrews, and motor
mounting bolts. Adjust and tighten as necessary.
F 8 Hour Interval: Inspect belt alignment and tension.
Adjust and tighten as necessary.
F 24 Hour Interval & 30 Days: Inspect belt tension. Adjust
and tighten as necessary.
General Fan Maintenance
Once the unit has been put into operation, a routine
maintenance schedule should be set up to accomplish the
following:
1. Lubrication of bearings and motor.
2. Wheel, housing, bolts and set screws on the entire fan
should be checked for tightness.
3. Any dirt accumulation on the wheel or in the housing
should be removed to prevent unbalance and possible
damage.
4. Isolation bases should be checked for freedom of
movement and the bolts for tightness. Springs should be
checked for breaks and fatigue. Rubber isolators should
be checked for deterioration.
5. Inspect fan impeller and housing looking for fatigue,
corrosion or wear.
6. Check V-belt drives on a regular basis for wear, tension,
alignment and dirt accumulation.
7. If drive belts have been replaced, new belts will stretch.
Belt tension needs to be checked & adjusted after 1
week, and again after 30 days of operation. Refer to
Figure 8. on Page 3 for details.
WARNING
Disconnect and secure to the ‘Off’ position all electri-
cal power to the fan prior to inspection and servicing.
Failure to comply with this safety precaution could
result in serious injury or death.
Static Grounding Strap
Figure 15
Grounding Strap