Bosch EPS 708 Setup guide

EPS 708
en Repair instructions

1 689 975 233 2018-05-08|Robert Bosch GmbH
| EPS 708 | 3 en
Contents English
1. Symbols used 5
1.1 In the documentation 5
1.2 On the product 5
2. User information 6
2.1 Important notes 6
2.2 Safety instructions 6
2.3 Disposal and scrapping 6
2.4 Equipment required 6
2.5 ESD protection 6
3. Variant overview 7
3.1 Voltage variants 7
3.2 Control unit variants 7
3.3 Sealing ring variants 7
4. Overview of EPS 708 8
4.1 Test bench 8
4.2 Covers 8
4.3 Overview of electronics
compartment 9
4.4 Overview of hydraulics chamber 10
4.5 Overview of electrical compartment, side 10
4.6 Overview of high-pressure rail 10
4.7 Overview of lubricating-oil supply unit 11
4.8 Overview of the water chillerG1 electrical
cabinet 12
5. Checklist for normal
operation 13
5.1 Safety relays K11 and K12 13
5.2 Power packs G3 and G4 14
5.3 LEDs on PCBs 15
5.4 LEDs on frequency converter (A13) 18
6. Repair 19
6.1 Replacing PCB (A3) 19
6.2 Replacing PCB (A6) 20
6.3 Replacing PCB (A14) 21
6.4 Replacing PCB (A4) 22
6.5 Replacing the quantity meter 23
6.6 Replacing the flow meter 24
6.7 Replacing the chiller 25
6.8 Replacing the water pump (M3-P) in the water
chiller 30
6.9 Replacing the fan (M2-EV1) on the water
chiller 33
6.10 Replacing the controller (A1) of the water
chiller 35
6.11 Replacing the safety pressure switch (HP1) of
the water chiller 37
6.12 Replacing pressure switch (PV1) for the fan in
the water chiller 39
6.13 Replacing the temperature sensor (B2) of the
water chiller 41
6.14 Changing the calibrating oil 42
6.15 Replacing the electric fuel pump 43
6.16 Replacing the float switch 44
6.17 Replacing the tank heater 45
6.18 Replacing the pneumatic springs 46
6.19 Replacing the protective hood 47
6.20 Replacing the flywheel 48
6.21 Replacing the drive motor 49
6.22 Replacing the pressure control valve block 51
6.23 Replacing a pressure control valve of the
pressure control valve block 52
6.24 Replacing the hose coupling on the pressure
control valve block 53
6.25 Replacing the connection fitting on the pressure
control valve block 53
6.26 Replacing the solenoid valve block 55
6.27 Replacing a solenoid of the solenoid valve
block 55
6.28 Replacing a directional control valve of the
solenoid valve block 56
6.29 Replacing the check valve on the solenoid valve
block 56
6.30 Replacing the hose coupling on the solenoid
valve block 57
6.31 Replacing the frequency converter A13 for the
lubricating-oil supply unit 58
6.32 Replacing the oil metering unit for the lubricating
oil supply 68
6.33 Replacing the high-pressure rail 70
6.34 Replacing the pressure limiter of the high-
pressure rail 71
6.35 Replacing the pressure sensor B9/B10 of the
high-pressure rail 71
6.36 Replacing the high-pressure connection CRI 846
of the high-pressure rail 71
6.37 Replacing the pressure control valve of the high-
pressure rail 72
6.38 Replacing pressure sensor B1 or B4 72
6.39 Replacing pressure sensor B48 or B49 74
6.40 Changing the workstation light assembly 75
6.41 Changing the light fixture of the workstation
light 76

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4 | EPS 708 |en
7. Updating the parameters of the frequency
converter 77
7.1 Updating parameters 77
7.2 Printing the safety log 78
8. Error messages 79
8.1 Software messages 79
8.2 Error messages on the chiller 80
9. Trouble-shooting 81
9.1 Trouble-shooting table 81
9.2 Checking the pressure control valve on the high-
pressure rail 82
9.3 Checking the pressure sensors 84
9.4 Checking the rail detection memory module
(one-wire chip) 84
10. Calibrating the high-pressure rail 85
10.1 High-pressure rail 85
10.2 Performing the zero point adjustment of pressure
sensors 89
10.3 Current calibration 90
11. History 92
12. Annexes 93
12.1 Overview of chiller 93

1 689 975 233 2018-05-08|Robert Bosch GmbH
Symbols used | EPS 708 | 5 en
DANGER – Exposure of live parts on ope-
ning the EPS 708!
Risk of (fatal) injury or heart failure from
electric shocks on contact with live compo-
nents (e.g. master switch, printed circuit
boards).
¶Work on electrical installations or equip-
ment is only to be performed by qualified
electricians or trained personnel under
the guidance and supervision of an elec-
trician.
¶Disconnect the EPS 708 from the mains
before opening.
Disposal
Dispose of used electrical and electronic
devices, including cables, accessories and
batteries, separately from household waste.
1. Symbols used
1.1 In the documentation
1.1.1 Warning notices -
Structure and meaning
Warning notices warn of dangers to the user or people
in the vicinity. Warning notices also indicate the con-
sequences of the hazard as well as preventive action.
Warning notices have the following structure:
Warning
symbol KEY WORD – Nature and source of hazard!
Consequences of hazard in the event of failu-
re to observe action and information given.
¶Hazard prevention action and information.
The key word indicates the likelihood of occurrence and
the severity of the hazard in the event of non-observan-
ce:
Key word Probability of
occurrence
Severity of danger if inst-
ructions not observed
DANGER Immediate impen-
ding danger
Death or severe injury
WARNING Possible impending
danger
Death or severe injury
CAUTION Possible dangerous
situation
Minor injury
1.1.2 Symbols in this documentation
Symbol Designation Explanation
!Attention Warns about possible property damage.
iInformation Practical hints and other
useful information.
1.
2.
Multi-step
operation
Instruction consisting of several steps.
eOne-step
operation
Instruction consisting of one step.
 Intermediate
result
An instruction produces a visible inter-
mediate result.
"Final result There is a visible final result on com-
pletion of the instruction.
1.2 On the product
!Observe all warning notices on products and ensure
they remain legible.

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6 | EPS 708 | User informationen
2. User information
2.1 Important notes
Important information on copyright, liability and warran-
ty provisions, as well as on equipment users and com-
pany obligations, can be found in the separate manual
"Important notes on and safety instructions for Bosch
Diesel Test Equipment". These instructions must be care-
fully studied prior to start-up, connection and operation
of the EPS 708 and must always be heeded.
2.2 Safety instructions
All the pertinent safety instructions can be found in
the separate manual "Important notes on and safety
instructions for Bosch Diesel Test Equipment". These
instructions must be carefully studied prior to start-up,
connection and operation of the EPS 708 and must al-
ways be heeded.
iCalibrating oil as per ISO 4113 is classified under
waste oil collection category 1. Category 1 waste
oil must not contain any foreign substances such as
waste oils of a different category, gasoline or diesel.
See the safety data sheet of the calibrating oil for
the correct waste code number.
2.3 Disposal and scrapping
2.3.1 Substances hazardous to water
!Oils and greases as well as refuse containing oil and
grease (e.g. filters) represent a hazard to water.
1. Substances hazardous to water must not be allowed
to enter the sewage system.
2. Substances hazardous to water must be disposed of
in accordance with the applicable regulations.
2.3.2 Chiller
¶The chiller must be disposed of by specialist
refrigeration engineers.
¶The refrigerant and lubricating oil in the chiller
must be disposed of in accordance with applicable
regulations in the country of use.
2.4 Equipment required
RGeneral tools for mechanics and electricians.
RHose with hose connection for emptying and filling
the chiller (hose connection thread = G3/8").
RNotebook with Windows XP or Window Vista or
Windows 7 operating system and serial interface or
notebook with Windows operating system and USB
port and USB serial adapter 1684465514
RMemory card R 911 298 7851
RConnecting cable R9112967082
RHose assembly 16807123633
RCommon rail high-pressure pump 1 687 222 188
RPressure sensor 1681032095
RAdapter cable 1 684 460 291
RMultimeter with the following data:
$Resolution of at least 1 mA in a measuring range
greater than900mA
$Measurement accuracy: ±0.2% of measured value
±4mA
RTwo connection cables with 4mm banana plugs
RCloths for catching and mopping up calibrating oil
and lubricating oil.
RLeakproof container for catching calibrating oil and
lubricating oil.
RLeakproof container for catching water.
RLeakproof surface for depositing parts contaminated
with calibrating oil.
RLeak detection spray
RHeat conducting paste, e.g. Rothenberger Rofrost
Turbo heat conducting paste
1Memory card is included in parts set 1 687 010 365
2Connecting cable is included in parts set 1 687 010 365
3Included in the scope of delivery of retrofit kit CP 4
(1687010390)
2.5 ESD protection
!Note the ESD handling instructions in EDIS and
remove components with care.

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Variant overview | EPS 708 | 7 en
3. Variant overview
3.1 Voltage variants
Test bench Mains voltage Color
0 683 708 001 400 V - 500 V without chiller
0 683 708 020 400 V - 500 V with chiller
0 683 708 002 200 V - 240 V without chiller
0 683 708 021 200 V - 240 V with chiller
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) Control unit variant
FD 2011-04 to FD 2011-06 NN
from FD 2011-06 XP
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).
458863-80_Pal
Fig. 2: pressure control valve block
458863-81_Pal
Fig. 3: Solenoid valve block
iAlways 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:
4588863-77_Pal
max. 6 Nm 15 +2 Nm
12
Fig. 4: Tightening torques
1 Fiber sealing ring
2 Copper sealing ring

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8 | EPS 708 | Overview of EPS 708en
4. Overview of EPS 708
4.1 Test bench
3
4
5
710
12 13
1
458846-01_Pal
X22
USB
6
11
2
9
X21
230V/max.200W
8
Fig. 5: Overview of EPS 708
1 Protective hood with handle
2 Cover of calibrating oil chamber
3 Emergency stop switch
4 Compartment for printer (special accessory)
5 Master switch
6 PC cover
7 Network connection X20 (LAN)
8 Electrical safety socket X21 (till FD 2012-12)
9 Screen
10 USB port
11 Storage compartment
12 Keyboard (special accessory)
13 Mouse
4.2 Covers
458863-02_Ri
1
X22
USB
X21
230V/max.200W
2
3
4
5
Fig. 6: Covers on front
1 Front cover of calibrating oil chamber
2 Front cover of electric motor compartment
3 Front cover of electrical compartment
4 Side cover of electrical compartment
5 Top cover of electric motor compartment
458863-01_Ri
1
2
3
4
5
Fig. 7: Covers on rear
1 Cover of hydraulics chamber
2 Cover of electronics compartment
3 Rear cover of electrical compartment
4 Rear cover of calibrating oil chamber
5 Side cover of calibrating oil chamber

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Overview of EPS 708 | EPS 708 | 9 en
4.3 Overview of electronics
compartment
4.3.1 Standard delivery
458863-03_Ri
12345
Fig. 8: Overview of electronics compartment
1 PCB 1 688 400 452 (A3)
2 PCB 1 688 400 480 (A6)
3 PCB 1 688 400 451 (A5)
4 PCB 1 688 400 453 (A4)
5 PC unit
Overview of PCBs
Item Designation Abbre-
viation
Function
1 PCB 1 688 400 4521) A3 Supply PCB
2 PCB 1 688 400 480 A6 Control PCB (DRV)
3 PCB 1 688 400 4512) A5 CPU board
4 PCB 1 688 400 4532) A4 Mainboard
1) Replacement PCB 1 687 010 364
2) Only in spare parts set 1 687 010 363
4.3.2 EPS 708 with retrofit kit CP4 (1687010390)
123456
458863-59_Pal
Fig. 9: Overview of electronics compartment
1 Circuit board 1 688 400 452 (A3)
2 Circuit board 1 688 400 505 (A14)
3 Circuit board 1 688 400 451 (A15)
4 Circuit board 1 688 400 451 (A5)1)
5 Circuit board 1 688 400 453 (A4)1)
6 PC/laptop
1) Circuit board is located underneath circuit board A14
Overview of PCBs
Item Designation Abbre-
viation
Function
1 PCB 1 688 400 4521) A3 Supply PCB
2 PCB 1 688 400 5052) A14 Control PCB (DRV and
CP4)
3 PCB 1 688 400 4512) A15 CPU board
4 PCB 1 688 400 4513) A5 CPU board
5 PCB 1 688 400 4533) A4 Mainboard
1) Replacement PCB 1 687 010 364
2) Replacement PCB 1 688 400 537
3) Only in spare parts set 1 687 010 363

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10 | EPS 708 | Overview of EPS 708en
4.4 Overview of hydraulics chamber
458863-08_Ri
1 2
3
4
Fig. 10: Overview of hydraulics chamber
1 Solenoid valve block for injector delivery quantity
2 Solenoid valve block for injected return quantity
3 Quantity meter 1 687 234 011
4 Flow meter 1 687 234 013
4.5 Overview of electrical compartment,
side
458863-14_Ri
12
Fig. 11: Overview of electrical compartment, side
1 G4 15V power pack 1,687,320,116
2 G3 24V power pack 1 687 320 117
4.6 Overview of high-pressure rail
4.6.1 Components
458863-28_Ri
Fig. 12: High-pressure rail components
4.6.2 Tightening torques
85 +5 Nm
135 ±5 Nm
30 ±5 Nm
100 ±5 Nm
25 ±5 Nm
85 +5 Nm
85 +5 Nm
105 ±5 Nm
85 +5 Nm
458863-27_Pal
Fig. 13: High-pressure rail tightening torques

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Overview of EPS 708 | EPS 708 | 11 en
4.7 Overview of lubricating-oil supply unit
14
5
6
8
9
3
458859-1
7
2
Fig. 14: EPS708 rear view
1 Cover plate
2 Lubricating oil intake pressure hose (700 mm)
3 Lubricating oil return pressure hose (850 mm)
4 Circuit board 1 688 400 453
5 Sealing gasket
6 Oil filter
7 Pressure and temperature sensor B19
8 Oil metering unit
9 Three-phase motor M11

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12 | EPS 708 | Overview of EPS 708en
4.8 Overview of the water chillerG1
electrical cabinet
2
3
4
5
6
4588963-91_Pal
1
Fig. 15: Front view
1 Controller A1
2 Cable gland (fan M2-EV1)
3 Cable gland (water pump M3)
4 PE terminal block
5 Cable gland (pressure sensors PV1 and HP1, temperature sensor
B2 a level sensor)
6 Cable gland (compressor M1-MC1)
Fig. 16: Front view of controller A1
Fig. 17: Rear view of controller A1
14
15
12345678 9 10 11
17 13
12
16
4588963-90_Pal
Fig. 18: View of the inside
1 Contactor KM1
2 Contactor KM5
3 Contactor KM7
4 Motor circuit breaker F1
5 Terminal block X0
6 Terminal block X1
7 Fuse FU1
8 Relay KA1
9 Relay KA2
10 Circuit breaker FU1
11 Circuit breaker FU2
12 Wireway
13 Transformer TC1
14 Terminal J3
15 Terminal J4
16 Wireway
17 PE terminal block
R1 S1 T1
411 20 030 61 021033
13 22COM B2 60 62 022
10 034
12
458863-92_pal
Fig. 19: Terminal blocks X0 and X1
1 Terminal block X0
2 Terminal block X1

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Checklist for normal operation | EPS 708 | 13 en
5. Checklist for normal
operation
Status LEDs on components in the test bench provide
information about their current operating status.
During normal operation (test bench on, no testing),
the following states apply:
5.1 Safety relays K11 and K12
In normal operation:
To check the status, proceed as follows:

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14 | EPS 708 | Checklist for normal operationen
5.2 Power packs G3 and G4
In normal operation, the power LEDs of both power
packs light up.
To check the status, proceed as follows:

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Checklist for normal operation | EPS 708 | 15 en
5.3 LEDs on PCBs
The PCBs contain LEDs, which light up in a particular
sequence during normal operation (test bench on, no
testing).
Symbol Key
LED lights up
LED lights up at half
strength
LED off
LED flashes
5.3.1 PCB (A3)
458863-22_Ri
V81
V129
V149
V146
V25
V5 V26 V3
Fig. 20: PCB 1688 400 452
V3 24 V power supply
V5 24 V power supply
V25 14 V-28 V constant supply to CRI box
V26 13.5 V power supply
V81 15 V power supply
V129 24 V lubricating oil supply (optional)
V146 K2 switching state
V149 K1 switching state
V3 V5 V25 V26 V81 V129* V146 V149 Status
Power supply in good working order.
No faults occurred
Emergency stop active or
disturbance to 15 V power supply
Disturbance to 24 V power supply
*optional
5.3.2 PCB (A6)
458863-24_Ri
V23
V21 V2
2
Fig. 21: PCB 1 688 400 480
V21 15 V power supply
V22 5 V power supply
V23 Processor clock
V21 V22 V23 Status
Power supply and processor in good
working order. No faults occurred
Emergency stop active or disturbance to
15 V power supply or disturbance to
24 V power supply

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16 | EPS 708 | Checklist for normal operationen
5.3.3 PCB (A5)
458863-21_Ri
V1
Fig. 22: PCB 1,688,400,451
V1 Firmware status
V1 Status
Firmware in good working order. No faults occurred
Disturbance to 24 V power supply
5.3.4 PCB (A4)
458863-23_Ri
V96 V98 V24 V26
Fig. 23: PCB 1 688 400 453
V24 3.3 V power supply
V26 5 V power supply
V96 Firmware status
V98 USB communication (LED flickers)
V96 V98 V24 V26 Status
Firmware in good working order. No
faults occurred
Disturbance to 24 V power supply

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Checklist for normal operation | EPS 708 | 17 en
5.3.5 PCB (A14)
iCircuit board A14 is included in the scope of delive-
ry of retrofit kit CP4 (1687010390) and replaces
circuit board A6 when making the conversion.
458863-60_Pal
V30 V70 V96
V72 V74 V82
V1
V21
V22
V23
Fig. 24: Circuit board 1 688 400 537
V21 15V external voltage supply
V22 5V internal voltage supply
V23 No function
V30 5V internal voltage supply of pressure sensors
V70 6.5V internal voltage supply
V96 13.5V internal voltage supply
V72 3.3V internal voltage supply
V74 USB communication status (LED flickers)
V82 No function
V1 Firmware status LPC800
V21 V22 V23 V30 V70 V96 V72 V741) V82 V1 Status
voltage supply and processor in
good working order. No faults oc-
curred
Emergency stop active or 15 V po-
wer supply 24 V voltage supply via
plug X3202) faulty
24 V voltage supply via plug X12) faul-
ty
24 V voltage supply via plug X12) and
15V voltage supply via plug X3202)
faulty
Short circuit 5 V voltage supply for
pressure sensor B48 or B49
1) LED flashes during active USB communication. The LED is off in
the absence of USB communication.
2) See connection diagram 1 689 927 302 in the appendix
Jumper setting for circuit board (A14)
X31X34X33X32X35
X49
X2
458797-39_Pal
Fig. 25: Jumper settings

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18 | EPS 708 | Checklist for normal operationen
5.4 LEDs on frequency converter (A13)
iThe frequency converter A13 is part of the lubrica-
ting-oil supply unit 1687001931
(special accessory). The following LED description
applies to the frequency converter 1687023774
(see table below). The display on the frequency
converter 1687023552 presents alphanumeric
messages.
Versions Frequency converter
1 687 023 552
Frequency converter
1 687 023 774
Graphic
In
program
From 2011-04 to
2015-10
From 2015-11
RUN FWD REV
POWER
458863-73_Pal
RUN FWD REV
POWER
Range
Time
10s
1
12
2b
2a
Fig. 26: LEDs on frequency converter 1 687 023 774 and on time
delay relay (K9)
LED status indications frequency converter
1 687 023 774:
RUN FWD REV Power
On
State
EPS 708 switched off or emergen-
cy-stop pressed
Ready for operation
State before operation of the time
delay relay K9 (see LED 2a flashes
and LED 2b off).
Fault condition after operation of
the time delay relay K9 (LED 2a on
and LED 2b on). Operate delay of
time relay is too short
(<10 seconds).
Reverse direction (REV); wrong pa-
rameter set selected
Warning on stop or error.
1. Switch the EPS 708 off and on.
2. If the error persists, replace the
frequency converter.
Set operate delay from time relay K9
Range
Time
10s
1
Range
Time
458859-18_Pal
10s
1
Fig. 27: Time relay K9
¶Set the delay time to 10 seconds on the time relay
K9 (see Fig. 27). Set the range to 10s and the fine
adjustment ("Time") to 1.
!The rotary switch for the "Range" must engage per-
ceptibly at 10s. A response delay that is set too low
prevents the frequency inverter from being set to a
ready state.
Test
1. Connect the EPS 708 to the voltage network.
2. Switch on the EPS 708 at the main switch. Observe
the LED "R" (Fig. 26, item 2b) on the time delay relay
K9 immediately after power is switched on. The LED
must light up approx. 10 seconds after power is
switched on. If the LED lights up after approx. one
second, the response delay is set too short and the
frequency inverter cannot be set to the ready state.
The "Run" LED on the frequency inverter A13 does
not light up. In this case, the response delay on the
time delay relay must be set to 10 seconds.

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Repair | EPS 708 | 19 en
6. Repair
!Note the ESD handling instructions in EDIS and
remove components with care.
!For all handling operations, the EPS 708 must be
switched off at the master switch and secured so
that it cannot be switched back on.
!Always pay attention to the operator instructions in
section 2.
6.1 Replacing PCB (A3)
458863-04_Ri
1
2
3
4
Fig. 28: Replacing PCB 1 688 400 452 (A3) in the EPS 708
6.1.1 Removing the PCB
1. Turn off the EPS 708 at the master switch.
2. Secure the master switch so that it cannot be
switched back on.
3. Unplug the mains plug or disconnect from mains
electricity.
4. Check that there is no power.
5. Remove the cover of the electronics compartment.
!Pay attention to the plug locks when disconnecting
and connecting cables. Lack of care may result in
damage to connecting cables and plugs.
6. Disconnect all connecting cables from the PCB (A3)
(see Fig. 28, item 4).
7. Remove Torx screws (items 1, 2 and 3).
8. Detach the PCB (A3) from the spacers.
6.1.2 Installing the PCB
!Note the correct pin assignment when fitting the
new PCB (see circuit diagram 1689911487).
¶Install the new PCB in the reverse order.
6.1.3 Entering calibration values
A sticker containing the specific calibration values is
affixed to the replacement PCB. These values must be
in the software.
iIf the label is missing, the calibration values must be
determined again (see section 10.3).
Fig. 29: Label with calibration values (until 11-2014)
Fig. 30: Label with calibration values (from 12-2014)
1. Read the calibration values on the sticker on the PCB.
2. Switch on the EPS 708 at the master switch.
3. Start the software EPS945.
4. In the "Injection component test main menu" start
screen, select <F7>.
A password request appears.
5. Enter the password in the input line: 1958
6. Confirm your entry with <F12>.
7. Select the "Calibration >> EPS708" menu item, and
continue with <F12>.
With software version 3.84 or lower and with label up
to date of manufacture 2014-11 (see Fig. 29)
1. Enter the calibration values in the software.
2. Continue with <F4>.
3. Confirm the dialog with <F4> and continue with <F12>.
The calibration values are saved and the calibrati-
on date is displayed at the top right.
4. Continue with <F12>.
5. Back with <F11>.
"This completes the calibration.

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20 | EPS 708 | Repairen
With software version 3.84 or lower and with label
from date of manufacture 2014-12 (see Fig. 30)
iThe calibration values "ZME" and "ZME'" printed on
the label must not be interchanged. The calibration
value "ZME" must not be used for software version
3.84 or lower.
1. Enter the calibration values in the software as fol-
lows:
Calibration value on the label Input box in EP945 software
ZME' offset ZME / DRV
EAV offset EAV
2. Continue with <F4>.
3. Confirm the dialog with <F4> and continue with <F12>.
The calibration values are saved and the calibrati-
on date is displayed at the top right.
4. Continue with <F12>.
5. Back with <F11>.
"This completes the calibration.
With software version 4.35 or higher and with label
up to date of manufacture 2014-11 (see Fig. 29)
1. Enter the calibration values in the software as fol-
lows:
Calibration value on the label Input box in EP945 software
ZME offset ZME' / DRV'
EAV offset EAV
2. Continue with <F4>.
3. Confirm the dialog with <F4> and continue with <F12>.
The calibration values are saved and the calibrati-
on date is displayed at the top right.
4. Continue with <F12>.
5. Back with <F11>.
"This completes the calibration.
With software version 4.35 or higher and with label
from date of manufacture 2014-12 (see Fig. 30)
1. Enter the calibration values in the software as fol-
lows:
Calibration value on the label Input box in EP945 software
ZME offset ZME / DRV
ZME' offset ZME' / DRV'
EAV offset EAV
2. Continue with <F4>.
3. Confirm the dialog with <F4> and continue with <F12>.
The calibration values are saved and the calibrati-
on date is displayed at the top right.
4. Continue with <F12>.
5. Back with <F11>.
"This completes the calibration.
6.2 Replacing PCB (A6)
458863-07_Ri
1
3
2
4
Fig. 31: Replacing PCB 1 688 400 480 (A6)
6.2.1 Removing the PCB
1. Turn off the EPS 708 at the master switch.
2. Secure the master switch so that it cannot be
switched back on.
3. Unplug the mains plug or disconnect from mains
electricity.
4. Check that there is no power.
5. Remove the cover of the electronics compartment
!Pay attention to the plug locks when disconnecting
and connecting cables. Lack of care may result in
damage to connecting cables and plugs.
6. Disconnect all connecting cables from the PCB (A6)
(see Fig. 31, item 4).
7. Slacken Torx screws (items 1, 2 and 3).
8. Remove PCB (A6)
6.2.2 Installing the PCB
!Note the correct pin assignment when fitting the
new PCB (see circuit diagram 1 689 911 487 on
page 8).
¶Install the new PCB in the reverse order.