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7.2 MAINTENANCE ON EACH UNIT
……Scanner NKE-1079/1075/1059/1052 ………………………………
After finishing the maintenance work, set the safety switch for stopping the scanner to “ON”.
Precautions on Mounting the Cover
When the cover is removed for regular checkup and replacement of parts and refitted after such work,
the procedures of fastening bolts shall be taken with the following precautions:
(a) The proper fastening torque of the fitting bolts (M8) is 1176 to 1470 N•cm (120 to 150
kgf•cm) (which makes the inside water-tight and protects the packings against permanent
compressive strain).
The packings start producing from the cover at the torque of approximately 1470N•cm (150
kgf•cm) or more.
Do not fasten the bolts with a torque exceeding the specified value. Otherwise, the screws may
be broken.
(b) Use an offset wrench of 11 mm × 13 mm or a double-ended wrench of 13 mm × 17 mm (not
longer than 200 mm).
(c) Screw all the bolts by hand first to prevent them playing, then fasten them evenly in 4 to 5
steps to reach the final torque in accordance with the fastening procedures in order not to
cause one-sided fastening. (Fasten the bolts with 25% of the required torque at the first step.)
*: Fasten the bolts in the diagonal order.
Turn off the main power source before starting maintenance.
Otherwise, an electric shock or injury may result.
Set the Safety Switch for Stopping the Scanner to cents OFF .
Otherwise, an accidental contact with the rotating scanner may result in injury.
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