Teledyne 6712SR - Manual (Page 155)

6712SR Refrigerated Sampler
Section 8 Maintenance
8-7
Memory Test – Screens 1 and 2 at left show you the diagnostic
tests for the unit’s memory. If either screen shows you a message
saying that the memory failed the test, contact Teledyne Isco’s
Customer Service.
Display Test – Screen 3 shows you the display test. You should
see the test pattern illustrated in the screen. If the pattern does
not match the illustration, the display or its circuitry require
repair.
Pump Test – Screen 4 lets you start the pump test by selecting
YES. As the sampler runs the test, it first runs the pump forward
for a short period. Next, it displays an ON/OFF ratio number.
After displaying the forward pumping ratio, the sampler reverses
the pump to obtain a purge ratio. The acceptable range is
between 0.80 and 1.25. If either ratio is outside the acceptable
range, the pump requires repair. You do not need to pump liquid
while running the test, and you can run the test with or without
a tube in the pump.
PLEASE WAIT!
. . . ‘RAM’ PASSED TEST
PLEASE WAIT!
. . . ‘ROM’ PASSED TEST
•If RAM or ROM fails the test,
the sampler will report that
‘RAM’ (or ’ROM’) FAILED
TEST. Contact Teledyne Isco’s
Customer Service for assis-
tance.
ABCDEFGHIJKLMNOPQRST
ABCDEFGHIJKLMNOPQRST
ABCDEFGHIJKLMNOPQRST
ABCDEFGHIJKLMNOPQRST
TEST PUMP?
YES NO
PUMPING . . .
PUMPING . . .
ON/OFF RATIO = _.__
PURGING . . .
PURGING . . .
ON/OFF RATIO = _.__
TEST DISTRIBUTOR
YES NO
FINDING ARM FLEXURE
NOW AT BOTTLE __
RE-INITIALIZE?
YES NO