Invicta BLz Series, Installation And Maintenance Manual

Page: 9 / 40

Page 8
‘L’ SERIES VIBRATOR INSTALLATION AND MAINTENANCE
RECEIPT AND STORAGE
Each vibrator is tested and inspected on completion. Whilst every care is taken during transit they should be
inspected on receipt and any defects immediately reported to the carrier and supplier. When not for immediate
use, they can be stored for up to two years if kept in a clean, dry and temperate atmosphere, free from
vibration. After more than 2 years of storage the bearing grease should be replaced before the motor is used.
INSTALLATION GUIDANCE NOTES:
Mechanical: Inspect vibrator for any physical damage and check that rotor shaft rotates freely. Remove paint
masking stickers from motor mounting holes. ALL mounting surfaces MUST be flat and free of paint, dirt and
scale. Fixing bolts should be tightened as recommended below and tightness checked after initially running
the vibrator. Bolts and nuts should not be reused.
Please ensure there is at least 50mm of clearance between
the vibrator and any surrounding static structure.
IMPORTANT - GAPS BETWEEN THE VIBRATOR FOOT AND MATING SURFACES AND INCORRECT
BOLT TIGHTNESS WILL CAUSE BOLT BREAKAGE AND DAMAGE TO THE VIBRATOR
.
Fixing bolt tightening: Use Grade 8.8 bolts with Grade 8 self locking nuts, torqued to values below. Figures
below apply to un-plated dry threads
.
Where capscrews are used with locking nuts, Grade 10 nuts must be fitted.
Use plain washers for BLz 03 - BLz 24 (aluminium frames) Not BLz22. If washers are used for BLz22 - BLz80
(cast iron frames) Not BLz24, hardened washers (PSN 612 to DIN 6916 or BS EN 14399-6) must be fitted.
Size Torque (N.m) Size Torque (N.m)
Cap-Screws
Grade 12.9
Setscrews/Bolts
Grade 8.8
Cap-Screws
Grade 12.9
Setscrews/Bolts
Grade 8.8
M 5 8 - M 16 310
242
M 6 15 11 M 20 580 473
M 8 34 27 M 24 950
818
M 10 68 56 M 30 -
1634*
M 12 127 96 M 36 -
2854*
With figures marked * a torque multiplier will be required.
Use the above figures for all screws except out of balance weights. (see page 29)
BLz 75 - 80: Half turn method.
In exceptional circumstances where tooling is not available, the half turn method may be used.
PSN 661
– High Strength nut
PSN 612
– Hardened washer under
bolt head and nut
PSN 780 - High strength bolt
Remove any paint, dirt or scale from all mating surfaces.
Fit hardened washer (PSN 612) under bolt head and nut. Pre-tighten until all mating surfaces are in contact.
Mark nuts and bolts as shown in fig. 2 and slog nut one half turn until marks are as shown in fig. 3.
FIG.2
FIG.3
FIG.1
Washer Chamfer
this side.