DH Instruments PPC2+, Manual

Page: 53 / 166

PPC2+™ Operation and Maintenance Manual
Page 45
©2001 DH Instruments, Inc.
•
Pressure control stops and a 5 second wait occurs.
•
SPLT exhaust valve is opened.
•
Wait until pressure is less than 3 psi (20 kPa) gauge or 16 psi (110 kPa) absolute.
•
Vent valve is opened with SPLT exhaust valve left open.
When the PURGE function is initiated, if the current pressure is over 100 psi
(700 kPa) gauge, the display is:
1. Current measured pressure and pressure units.
2. Current reference pressure transducer and range.
3. Indication that PPC2+ is reducing pressure to the
purge pressure of less than 100 psi (700 kPa)
gauge.
:\O]]SXQ E/=-+:/G K^ KXc ^SWO N_\SXQ Z_\QO \Y_^SXO ObOM_^SYX MK_]O] ^RO Z_\QO
P_XM^SYX^YKLY\^KXN\O^_\X]^Y^ROVOKUMROMU]M\OOX]OO=OM^SYX"
Once the current pressure is, or if the purge function was initiated, under 100 psi
(700 kPa) gauge the display is:
1. Current measured pressure and pressure units.
2. Current reference pressure transducer and
range.
3. Indication that PPC2+ is waiting 5 seconds and
preparing to open the SPLT exhaust valve.
Indication flashes.
After a five (5) second wait the display is:
1. Current measured pressure and pressure units.
2. Current reference pressure transducer and
range.
3. Indication that PPC2+ has opened the SPLT
exhaust valve and is waiting for pressure to go to
zero gauge. This indication flashes.
2
3
Descending to purge
2
3
PREPARING TO PURGE
2
3
PURGING