USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 29
September 2004
3.3
PROGRAM STEPS:
(Continued)
Part numbers for the instrument abbreviations listed in the program steps below (i.e.
V1, V2, etc.) can be found in the Spare Parts List in Section 5 of this User Manual.
STEP
TIME
DESCRIPTION OF ACTION
1
0 min.
De-energize SV1-2
Energize SV1-1;
Opens V3, 6, 8 & 9
Closes V4, 5, 7 & 10
“Left Tower Onstream”
Start time delay of 60 seconds;
When time delay times out if pressure switch PS2 is
greater than 10
“Fail to Shift” alarm
2
2 min.
De-energize SV2-2
Energize SV2-1;
Opens V1 & 15
Closes V2
“Heating Right Tower”
3
90 min.
De-energize SV2-1
Energize SV2-2;
Opens V2
Closes V1 & 15
Energize SV4-1;
Opens V12
Energize SV3-1;
Opens V11
“Stripping Right Tower”
4
180 min.
De-energize SV4-1;
Closes V12
“Re-pressurizing Right Tower”
When PS3 reaches setpoint of 60 PSI then,
Energize SV5-1;
Opens V13
“Cooling Right Tower”
5
240 min.
If dewpoint is below the analyzer set-point and the
Dewpoint/Timer selector switch is on Dewpoint then;
Begin standby
“Standby”
