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Beschikbare talen
Beschikbare talen
ings replacement.
For motors with protection degree higher than IP55, machined mat-
ing surfaces on housing, endshields, covers, etc., before mount-
ing, must be covered with a proper not hardening adhesive or with
grease in order to assure motor tightening.
In case of brake motor also see points below 8.2, 8.3, 8.4.
By executing controls of electric absorption, keep in mind that meas-
ured values are comprehensive of brake absorption (with brake sup-
ply directly from terminal block).
8.2. HBZ Brake periodical maintenance
Verify, at regular intervals, that air-gap and backlash g (see Fig. 6)
of release lever pullers, if any, are included within values stated in
Tab. 3 (remove the wear dust of friction surface, if any).
Excessive air-gap value deriving from friction surface wear makes
brake noise level rise and could prevent its electric release.
Important: an air-gap greater than max value can produce a de-
crease down to 0 of the braking torque due to the clearance taking
up of the release lever pullers; g dimension in Fig. 6 must match
with the values stated in Tab. 3; a too high g value makes it diffi cult
or ineffi cient the use of the release hand lever.
Adjust the air-gap (see Fig. 6) by releasing the nuts 32 and by screw-
ing the fastening screws 25 (it is necessary to act through a hole of
the fl ywheel, if present) in order to reach minimum air-gap (see Tab. 3)
measuring by a thickness gauge in 3 positions at 120° near the
guiding bushes 28. Tighten nuts 32 keeping in position fastening
screws 25. Verify the obtained air-gap value.
If the brake is in a non-standard design with «ready air-gap reset»
design (code «,RF» on name plate) it is provided with removable thin
spacers placed under the brake fastening studs (see Fig. 8); in this
case, adjust air-gap simply removing one series of thin spacers after
having partially loosen (without disassembling) the brake fi xing bolts
25 and without adjusting by thickness gauge. The brake is supplied
with two series of thin spacers of different color (yellow and red) to
allow two adjustment operations.
After several adjustments of air-gap, verify that brake disk thickness
is not lower than the minimum value stated in Tab. 3; if necessary,
replace the brake disk (refer to Fig. 6).
Release lever rod is not to be left permanently installed (to avoid
dangerous or inappropriate use).
TX11 Operating instructions − UTD.164.06-2012.00_DE_EN
All manuals and user guides at all-guides.com
8.3. HBF Brake periodical maintenance
Verify, at regular intervals, that air-gap and backlash g (see Fig. 10)
of release lever pullers, if any, are included within values stated in
Tab. 4 (remove the wear dust of friction surface, if any).
Excessive air-gap value makes brake noise level rise and could pre-
vent its electric release.
Important: an air-gap greater than max value can produce a de-
crease down to 0 of the braking torque due to the clearance taking
up of the release lever pullers. g dimension in Fig. 10 must match
with values stated in Tab. 4; a too high value of g makes it diffi cult or
ineffi cient the use of the release hand lever.
Motor sizes
160S: adjust the air-gap (see Fig. 10) by releasing the
nuts 32 and by screwing the fastening screws 25 in order to reach
minimum air-gap (see Tab. 4) measuring by a thickness gauge in 3
positions at 120° near the guiding bushes 28. Tighten nuts 32 keep-
ing in position fastening screws 25. Verify the obtained air-gap value.
Motor sizes
160M: adjust the air-gap (see fi g. 10a) by releasing the
nuts 45a and by screwing the nuts 45b to reach minimum air-gap,
measuring the adjustment by a thickness gauge in 3 positions at
120° near the studs 25. Tighten nuts 45a and verify again the air-gap
obtained.
After several air-gap adjustments, re-adjust braking torque and verify
that brake disk thickness is not lower than minimum value stated
in table 4; if necessary, replace the brake disk (refer to fi g. 10a).
When the hand lever for manual release does not run, after repeated
operations, re-adjust the backlash g according to the table values.
Release lever and screw 15 must not be left permanently installed
(to avoid dangerous or inappropriate use).
8.4. HBV (HBVM) Brake periodical maintenance
Verify, at regular intervals, that air-gap is included between values
stated in Tab. 5.
Excessive air-gap value could produce: decrease of braking torque
up to zero, rise of brake noise level, and even miss of electric re-
lease.
Adjust the air-gap (see Fig. 11), even with the fan cover mounted,
acting on self-locking nut 48 considering that the pitch is: 1 mm for
size 63, 1,25 mm for sizes 71 and 80, 1,5 mm for sizes 90 ... 112,
1,75 mm for sizes 132 and 160S. Important: in case of single-phase
motor (HBVM), loosen the tightening dowel of fan before adjusting.
After several adjustments of air-gap, verify that the thickness of fric-
tion surface is not lower than the minimum value stated in Tab. 5;
if necessary, replace the brake anchor (see Fig. 11).
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