Process Lens PL Service Manual_EN.pdf - 第88页
3 Replacing spare parts 88 Se rv ic e Ma nu al P ro ce ss L en s PL - 0 3/ 20 25 CAUTION Spacer The fastening screw for some idler pulleys also holds the spacers in place. ► Make sure that you do not loose these. ► Unthr…
3 Replacing spare parts
Service Manual Process Lens PL - 03/2025 87
Fig.114: T slot nuts in conveyor rail
CAUTION
Replacing the movable idler pulley - fixing the T-slot nut
The movable idler pulleys are fixed to the inner side of the conveyor rail with a T slot nut [03113747-
xx].
If you want to remove a movable idler pulley, proceed as follows:
ü Before removing a movable idler pulley, first fix the T-slot nut.
► (1) When removing a movable idler pulley in the middle of the conveyor rail, you can reach the
T-slot nut through the hole on the other side of the conveyor rail. Use your finger or an appro-
priate tool to fix the T slot nut.
► (2) When removing a movable idler pulley at the beginning or the end of the conveyor rail, fix the
T slot nut with your finger (the conveyor rails are open at the side).
ð The T slot nut must not fall into the conveyor rail! The lack of room makes subsequent inser-
tion and fixture highly complicated if not impossible!
► Loosen the movable idler pulley.
CAUTION
Loosen the movable idler pulley only as far as necessary!
► Do not remove the movable idler pulley (unless you explicitly need to remove it). Otherwise the T
slot nut on the inner side will fall into the conveyor rail.
► Remove the idler pulley to be replaced.
3 Replacing spare parts
88 Service Manual Process Lens PL - 03/2025
CAUTION
Spacer
The fastening screw for some idler pulleys also holds the spacers in place.
► Make sure that you do not loose these.
► Unthread the deflection pulley from the conveyor toothed belt and remove it.
Installation
► Follow the removal instructions in reverse order for installation. Also observe the following
instructions:
CAUTION
Installation instructions
► Tighten the fixing screw with a torque of 0.58Nm. Make sure that you do not tighten the screws
too much. This could cause irreparable damage to the conveyor!
The corresponding threads are only in 1.5 to 2mm thick plates and could be damaged if you use
a torque which is too high.
For this reason, avoid using screws which are too short. Use a measuring scale to check, if
needed!
► Use any spacers available.
► Do not bend or damage the toothed belt.
► Make sure that the toothed belt is positioned accurately in the guidance on the motor shaft or in
the belt drive.
► Remove the adhesive tape, if necessary.
► While you tighten the idler pulley, set the tension of the toothed belt correctly (see Setting the
tension of the conveyor toothed belt).
Replacing the pinion gear drive
Parts
Fig.115: Pinion gear drive
1 03112876‑xx Drive pinion cpl. M-C
See also Replacing the idler pulley (conveyor belt)
3 Replacing spare parts
Service Manual Process Lens PL - 03/2025 89
Equipment and tools
00386253‑xx Torque screwdriver ESD 0.4 - 1.0Nm
03078706‑xx Bit holder for screwdriver TorqueVario
00326015‑xx Belt tension measuring device
00353832-xx Allen key set
Bit, size 4
If required:
Magnet lifter or tweezers and adhesive tape
Measuring scale
Removal
CAUTION
Toothed belt
► Make sure that the toothed belt is not folded or otherwise damaged.
► Use the software or manually move the conveyor rail into a position which allows you best
access.
– To move the conveyor rail manually, pull the toothed belt of the width adjustment unit.
– Make sure that the rear side of the conveyor rail is also accessible.
► Switch off the machine, disconnect it from the power supply and secure it to prevent unauthorized
reactivation.
Fig.116: Movable idler pulleys
► Loosen the fixing screw of the relevant
movable idler pulley(1) to release the ten-
sion of the belt.
CAUTION!
Loosen the movable idler pulley only
as far as necessary!
Do not remove the movable idler pulley
(unless you explicitly need to remove it).
Otherwise the T slot nut on the inner side
fall into the conveyor rail.
.
See also Replacing the idler pulley (conveyor
belt)
Fig.117: Washer
► Remove the fixing screw(1) (cross head)
and take off the washer(2).
► Remove the toothed belt(3).
► Remove the fastening screw(4) (Allen).