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7.4 INSPECTION OF OVERHEATING CONTROL DEVICES
These mandatory inspections guarantee the correct operation of the overheating control devices, which
are installed on the. hydromechanic coupling. They must take place regularly, in connection with the
ORDINARY MAINTENANCE activities to monitor the conditions of the devices installed. To perform the
inspection, please follow the described procedure:
CAUTION:
Before you start checking devices:
A- stop the motor and wait for the rotation components to stop,
B- cut out power supply and apply a safety padlock,
C- signal the operation under way,
D- wait for the cooling, if needed (max 40°C).
7.4.1
Open the accident-prevention guard of the operating area to access the coupling.
7.4.2 TF DEVICE (Expandable Trip Plug)
PAD
- Unscrew the TF and check the inside pad for deformation and damages.
- Make sure that the TF is in good working order and its outside seat is not
obstructed.
7.4.3 TE DEVICE (Expandable Trip Plug)
Ø4
Ø8
5 8
6
- Make sure that the TE device is not impaired and the
piston is not deformed or blocked and the return spring
is in good working order.
- Make sure that device (safety microswitch) has not
been tempered with, it is in good working and the
distance between the detector and the device is 2 mm.,
7.4.4 PM T09 UNIT
T09
PM
- Make sure that the PM device in the coupling is in good
operating conditions it is not damaged.
- Make sure that the sensor of the T09 device has not
been tampered with, is in good operating conditions
and detecting distance is between 2mm and 5mm
(see distance defined during test and inspection).
NOTE
The correct functioning of the PM-T09 combined unit is signalled by a yellow led, when the PM plug
passes in front of the sensor.
7.4.5
Note in section 7.5 SERVICE RECORD the results of the operation and/or, if necessary, carry out the
replacement or resetting of the overheat protection devices.
CAUTION
Do not use fluid couplings without devices or if devices have been tampered with or are
inefficient. DANGER OF OVERHEATING AND/OR FIRE IGNITION.
7.4.6
Remove any used key and/or cloth or tool from the coupling and the operating area.
DANGER OF
PHYSICAL INTERFERENCE.
7.4.7
Close the accident-prevention guard of the hydromechanic coupling operating area.
The check of the overheating control devices has thus ended
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