Replacing Scale Assembly For Refrigerant Cylinder; Panels; Opening The Top Panel - Bosch ACS 751 Repair Instructions

5.2.2 Replacing scale assembly for refrigerant
cylinder
Warning - Danger of frostbite!
During repair work on the ACS 751/651
refrigerant in liquid or gaseous form can
escape and cause frostbite to the body.
¶
Close valves on refrigerant cylinder.
¶
Wear protective goggles.
¶
Wear protective gloves.
1. Remove the refrigerant tank from the mounting posi-
tion (Chap. 8.1).
2. Place the cylinder outside the ACS 751/651 unit.
!
Ensure the hydraulic connections are not strained or
damaged.
3. Disconnect the electrical connections from the scale
to the I/O board.
4. Remove the earthing connection to the scale assembly.
5. Unfasten the scale assembly from the chassis.
6. Complete the earthing connection to the new scale
assembly.
7. Fix the new scale assembly to the chassis.
8. Make the connections from the scale assembly to the
to the I/O board.
9. Mount the cylinder on the scale assembly.
10. Close the rear panel.
Fig. 16: Refrigerant cylinder scale assembly
i
Ensure that the cylinder is filled with the refrigerant
before service is performed.
Robert Bosch GmbH
Panels | ACS 751/651 | 19
6.

Panels

6.1

Opening the top panel

1. Apply the brakes.
2. Switch off the ACS 751/651.
3. Lower the HMI module.
4. Unfasten the screws on the top and on either sides
of the panel.
5. Lift the top panel up.
Fig. 17: Opening the top panel
1 Top panel
ACS 751/651 | 19 | 19 en
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1 689 975 223 2013-10-21