Variant Overview; Voltage Variants; Control Unit Variants; Sealing Ring Variants - Bosch EPS 708 Repair Instructions

3.

Variant overview

3.1

Voltage variants

Test bench Mains voltage
0 683 708 001 400 V - 500 V
0 683 708 020 400 V - 500 V
0 683 708 002 200 V - 240 V
0 683 708 021 200 V - 240 V
3.2

Control unit variants

The control unit variant can be read on the name plate
of the control unit (see Fig. 1)
Fig. 1: Control unit name plate
Date of manufacture (FD)
FD 2011-04 to FD 2011-06
from FD 2011-06
Robert Bosch GmbH
Color
without chiller
with chiller
without chiller
with chiller
Control unit variant
NN
XP
Variant overview | EPS 708 | 7
3.3

Sealing ring variants

Sealing rings of different materials are used for sealing
on the pressure regulating valve block (Fig. 2) and sole-
noid valve block (Fig. 3). The correct tightening torque
must be used based on the material of the sealing ring
(fiber or copper); otherwise, the joint will not be tight
or the sealing ring will be damaged. Fiber sealing rings
or copper sealing rings were used at the following loca-
tions (see arrows).
Fig. 2: pressure control valve block
Fig. 3: Solenoid valve block
i
Always use new sealing rings when replacing com-
ponents. The new sealing rings must be made from
the same material as the previously installed sealing
rings. Otherwise, a tight connection cannot be
assured.
Use the following tightening torques based on the mate-
rial of the sealing ring:
max. 6 Nm 15 +2 Nm
1
Fig. 4: Tightening torques
1 Fiber sealing ring
2 Copper sealing ring
en
2
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