TeST TT AUT-MARSHALL-CBR, Руководство пользователя

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8 Maintenance
8.1 After each series of tests raise the platen to its maximum height and clean the platen
and case removing all debris, spots of binder etc., particularly from under the platen.
8.2 Apply a smear of medium grease to the shaft under the platen where it runs into the
base casting. This is particularly important where a solvent is used for cleaning in this
area.
8.3 After a prolonged period of use, or at least annually, the following internal
maintenance should be carried out.
8.4 Remove the load measuring device from the crosshead. Raise the platen to its
maximum height.
Warning: always disconnect the machine from the power supply before carrying out
maintenance work or making any adjustment.
8.5 Using the tommy bar provided, unscrew the platen from the jacksleeve
(anticlockwise).
8.6 Remove the two screws at the front and the six screws at the rear of the machine. Lift
the case evenly up the columns. A smear of grease on the columns will assist the
grommets to slide smoothly.
Caution :Take care as the case can be raised only a
limited amount before being restrained by connecting cables. Support or suspend the
case as convenient or totally remove the crosshead and case. If the case is to be
removed, then firstly disconnect the ribbon type cables from the keypad & display
from the microprocessor PCB, the cable from the Emergency Stop switch from the dc
drive PCB and the earthing lead. It is crucial that all connectors are replaced in the
correct orientation
– make a note of their position before disconnecting them.
8.7 Check for any undue play in the
drive belt. If there is, slacken the
four screws holding the motor to
the main casting. Slide the whole
motor assembly until the belt is just
taut.
8.8 Check the alignment of the pulleys
by laying a steel rule across their
faces. Retighten the fixing screws.
(see figure 7)
8.9 If the belt shows any signs of
cracking, fretting or other signs of
wear, it must be replaced
immediately.
8.10 Inspect the tacho-generator drive
belt for signs of wear and replace if
necessary. (see figure 7).
jacksleeve
align pulleys
Figure 7
Motor fixing screws
tacho-generator
electric motor
drive belt
8.11 Refit the case ensuring that any disconnected wires have been reconnected and do
not foul on the drive mechanism. Replace the case fixing screws. Lift the front panel
back into position and replace the fixing screws.
8.12 Screw the platen back onto the jacksleeve and tighten with the tommy bar.
Original Instructions 15