6700 Portable Sampler User Manual - Isco

6700 SAMPLERS
Chapter 4 Maintenance
Chapter Contents
Maintenance Screens
SetClock
Diagnostics
Maintenance Checklist
Cleaning Guidelines
Cleaning Protocols for Priority
Pollutants
Replacing the Pump Tube
Checklist for Replacing Pump
Tube
Pump Tube Alarm
Opening the Controller Case
Recharging the Desiccant
Replacing the Internal Battery
Diagnostic Screens
1
2
3
4
RUN
PROGRAM
VIEW REPORT
OTHER FUNCTIONS
Select OTHER FUNCTIONS.
MAINTENANCE
MANUAL FUNCTIONS
PROGRAMMING STYLE
Select MAINTENANCE.
SET CLOCK
SET PUMP TUBE ALARM
INTERNAL BATTERY
DIAGNOSTICS
Select DIAGNOSTICS.
PLEASE WAIT!
. . . ‘RAM’ PASSED TEST
If the RAM fails the diagnostic
test, the sampler reports
’RAM’ FAILED TEST. Contact
Isco Customer Service
for assistance.
MAINTENANCE SCREENS
The maintenance screens include:
Set the sampler’s clock.
Set the number of pump counts for the pump tube warning.
See Pump Tube Alarm on page 75.
Reset the battery warning for the internal battery. See Replacing
the Internal Battery on page 79.
Run a set of diagnostic tests on the RAM, ROM (Read Only
Memory), character locations on the display, pump, and distributor,
and to reinitialize the sampler.
Charts for maintenance screens appear in Figure 31, Maintenance
Screens, on page 118.
72
SET CLOCK
Isco ships the samplers from the factory with the clocks set to the
correct Central Standard Time. Reset the clock when installing
the sampler in a different time zone, for daylight savings time, or
when needed. Setting the Clock and Calendar on page 19 shows
you how to set the time and date.
DIAGNOSTICS
The sampler has several self-diagnostic tests that check the
memory (both the RAM and ROM), pump, and the distributor
arm position. It also contains screens that let you reset the sampler’s
program settings and memory to factory settings. You will
not need to run the diagnostic tests routinely. The diagnostic
tests are a troubleshooting tool; Isco’s Customer Service department
staff may ask you to run these tests when they work with
youindiagnosingproblemswithyoursampler.
Memory Test
Screens 4 and 5 show you the diagnostic tests the memory. If
either screen shows you a message saying that the memory failed
the test, contact Isco Customer Service.
Display Test
Screen 6 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 7 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.