Bosch EPS 708 Original Instructions Manual page 50

en 50 | EPS 708 | Testing
5.4 Description of pump test
!
If the required power is set higher than that
specified in the setpoints of the TestData CD during
the pump test sequences, depending on the ambient
temperature or ambient pressure, the EPS 708 may
shut down when the limit is reached.
Once the test has been started and Automatic
mode activated, the waiting time or measuring time
commences as soon as the specified setpoints are
attained. After these times have elapsed, the EPS945
system software automatically switches to the next test
step and saves the test results in the test log.
When the last test step is reached and the measuring
times have elapsed, the EPS 708 comes to a stop and
the test is complete. Press <F12> to view the log. <F4>
saves the data so that it can be recalled in the history.
i
Please refer to the Online Help for a more detailed
description of the EPS945 system software.
i
All information (part number, dimensions etc.)
for clamping components and drive couplings
required for clamping the pump can be found on
the ToolsCATAlogue special accessories CD.
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5.5 EPS 708 faults
Fault
LCD of chiller shows: HP1
(chiller overload)
LCD of chiller shows: tP
(general chiller overload)
LCD of chiller shows: FL
(too little water in chiller)
Test cannot be started
The hose between the intake filter
and the injection chamber comes
off during the test
For CP3.4:
Safety shutdown! Zero delivery
terminated! Differential pressure
has exceeded specification!
When testing common rail pumps,
the current for controlling the
actuator is not being adjusted.
Causes:
1. The actuator (EAV, DRV, DMV or
ZME) of the common rail pump has
a short-circuited turn.
1. No readings or highly fluctuating
readings due to dirt or metal
particles in the gear pump or in the
control piston of the flow meter.
Characteristics of these faults may
be the following: Hose (test oil
inlet) to flow meter is completely
filled with test oil (no flow of
the test oil) or test oil level in
hose (test oil inlet) to flow meter
increases and decreases.
2. No or very high readings due to
air in the volume meter cylinder.
This causes the control piston to
get stuck on one side.
Measure
Press the emergency stop
switch and wait until the
chiller has cooled down
Inform Customer Service.
Top up water (see initial
commissioning)
Briefly open and close
the hood
Check the element of the
intake filter for clogging
and replace if necessary
For CP3.4 with the
required return pressure
< 10 kPa connect hose
line (fig. 2, pos. 11)
1. Check the common rail
pump for short-circuited
turns before mounting.
Check hose (test oil inlet);
clean (sec. 5.5.1) and vent
volume meter (sec. 5.5.2)
Robert Bosch GmbH