Bosch EPS 807 - 7 Adjustment and Functional Test; Test the Operating Unit; Test Tip Switch Elements; Test Indicator Lamps

1 689 975 140 2013-07-01| Robert Bosch GmbH
24 | EPS 807 / 815 | Adjustment and Functional Testen
7. Adjustment and Functional
Test
7.1 Test the operating unit
! Precaution: switch off main switch before the test !!
7.1.1 Test tip switch elements
1. Disconnect plugs X3 and X5 on the printed board A5.
2. Test the following pins compared with pin 9 with
continuity tester on plug X3:
$ Pin 1 – Lubricating oil OFF
$ Pin 2 – Lubricating oil ON
$ Pin 3 – Heating OFF
$ Pin 4 – Heating ON
$ Pin 5 – Regulator release OFF
$ Pin 6 – Regulator release ON
$ Pin 7 – Converter OFF
$ Pin 8 – Converter ON
"Through-way is available each time by pressing the
orresponding key
7.1.2 Test indicator lamps
1. Disconnect terminal X5 from the printed board A5.
2. Test compared with pin 3 with continuity tester:
$ Pin 1 - H2 (Lamp Regulator release)
$ Pin 4 - H1 (Lamp Converter ON)
$ Pin 5 - H3 (Lamp Heating)
$ Pin 6 - H4 (Lamp Lubricating oil)
"If through-way is available the corresponding lamp is
in good condition
7.1.3 Test emergency stop switch elements
¶ Test for through-way between terminals 161 and 165
as well as on printed board A5 between X11_1 and
X11_3 .
"Interruption by pressing emergency stop
7.2 Testing temperature sensors
¶ Resistance measurement on X2 (connection measur-
ing system) with switched on EPS:
$ Between Pin 16/17: tank temperature sensor
$ Between Pin 18/19: inlet temperature sensor
"At temperature of 25°C these sockets have
1005 ±5Ohm.
7.3 Testing cooling proportional valve
1. Connect and open water inlet.
2. Attach 24Vdc onto X2 (connection measuring sys-
tem), onto Pin 12 and 13 (possibly take away from
X4 and X6)
 Cooling valve must be open.
! When exchanging instrument and return leads the
valve must be always open.