Checking Power Supply And Vacuum Level; Check Baths - Beckman Coulter LH 780 System Instructions For Use Manual

PRIME
APERT
Press
The pneumatic subsystem has an automatic shutoff feature to prolong the life of the
compressor and vacuum pump. If the Diluter is idle (not cycled) for about 1 hour, the
pneumatic subsystem turns off. Messages that cause the system to stop processing samples
inhibit the time-out function.

Checking Power Supply and Vacuum Level

CAUTION System damage or malfunction can occur if you operate the instrument when any indicator is
outside the following limits. Do not operate the instrument if any indicator is outside these limits.
Check the following status and function levels on the Power Supply.
Status or Function Level
Input Power (AC) Status
Output Voltage (DC) Status
Pneumatic (PNEU) Status
Temperature (TEMP) Status
60 PSI
30 PSI
5 PSI
VACUUM
AC LINE
Turn adjustment controls clockwise to increase pressure; counterclockwise to reduce
pressure. If the vacuum is out of range, call your Beckman Coulter Representative.

Check Baths

1. Open the aperture compartment door.
2. Press
3. Verify that both aperture baths drain completely.
4. Press
5. Verify that both baths fill with liquid.
6. Verify that the waste chamber drains.
PN 773022BC
on the Numeric Keypad to activate the pneumatic subsystem.
DRAIN
on the Numeric Keypad.
RINSE
on the Numeric Keypad.
PERFORMING DAILY STARTUP
Should Appear
±
60 5 psi
±
30 1 psi
±
5 0.1 psi
22 in. Hg minimum at sea level
90 - 264 V
2
STARTUP
2-3