To April 2006

Type ^ to repeat the date.

Date Hour ID Note
Wed 03/May/06 15:49 GG Loop 1 locked at 0.55b, loop 2 open at 0.6b, al the others locked at ~0.4b. m=32.5kg. RUN.
15:56 GG m=26.5kg. Compressor starts.
16:21 GG m=26.7kg.
16:44 GG m=26.2kg.
16:50 GG m=26.0kg.
17:24 GG m=24.9kg. No liquid in the compressor. RECOVERING.
17:45 GG m= 28.3kg. RUN
17:50 GG m=25.9kg. Compressor starts.
18:11 GG m=25.1kg. No liquid in the compressor.
18:44 GG m=24.6kg. No liquid in the compressor. RECOVERING.
Thu 04/May/06 13:40 GG System found in ALARM for weight variation. Reset. m=32.0 kg. RECOVER.
15:43 GG Pressure 0.6b in all loops locked but loop 2. m=32.2kg. RUN.
15:50 GG Compressor start. m=27.5kg.
16:05 GG m= 27.2. HT of the sector problem: RECOVERING. Al loops open.
16:36 GG Solved the network problem: IP address changed by NetOps. Changed the IP address in the PVSS interface (A. Tauro) and in the PLC (S. Berry).
18:15 GG m=32.4kg. All loops locked at ~0.4b.
Fri 05/May/06 10:40 IAC m=31.610. Loop 3 only
13:03 SC m=25.87 put in recovering. Loop 3 open
Mon 08/May/06 14:55 SC m=30.61, loop 3 open, system in run mode
15:46 SC Loop 3 open, system in revovering
15:58 SC m= 27.64, loop3 open, system in run mode
16:20 SC m=25, Loop3 open, system in recovering
17:07 GG m=22.5kg. No liquid in compressor. Recovering. Discovered serious detachment of the HSs on sector 1. Failure analysis on going.
Tue 09/May/06 09:51 GG m=30.0.
17:27 GG System found in ALARM for weight variation. m=31.5. Reset. RECOVERING.
Wed 10/May/06 11:38 GG m=32.5kg. Loope 3 open, all the other locked.
11:46 GG Temperature on the sector boxes and on the HSs is 21C (measured with quickTEMP, infrared thermometer). RUN.
12:05 GG Temperature on the HSs is 17C.
12:24 GG When powered, the normal HS reach 25C, the detached even more than 30C.
13:22 GG m=24.0kg. RECOVERING.
19:27 GG Other tests performed during the afternoon. SC reported that the system was in ALARM. Now is RECOVERING with all loops opened.
Thu 11/May/06 09:33 GG m=29.6kg. Locked all loops (at 0.4b) but 2 and 3.
11:42 SC m=29.58 kg. Locked Loop2. system in Runmode
13:17 SC m=22.5 kg. Loop 3 open, sysrem in recovering
17:50 GG m=29.6kg. RUN
17:59 GG m=27.2kg. Knee in the weight drops after 4 min. Stable temperature reached after 9 min. Return pressure rise up to 1.7b and decrease, with the compressor , again at 1.4b. When stable is at 1.55b. Temeprature test with IR camera and PT1000 measurements.
18:48 GG m=24.0kg. RECOVERING.
Fri 12/May/06 10:54 GG m=29.6kg. Created a plots folder in D:\PVSS_Projects\SpdCooling_20060220\Plots . In steady state there is a stdev of 0.010kg. Limiting the data precision to 0.01?
11:27 GG At 11:08 a slow increase of the weigth starts. Now is at 29.9kg. The compressor is still full throttling, the chiller is at 7.5C, the loops are locked but loop 3. Pressure in the loops is 0.38b but loop 1 at 0.45b.
11:34 GG m=29.9kg. RUN.
12:01 SC m=26.54kg. recovering
12:26 SC m=29.92kg. system in Rum mode
12:41 SC m=26.58Kg. system in recovering
15:26 GG m=30.1kg. STANDBY
Mon 15/May/06 16:45 GG System switched off by a general power cut. Chiller reset. System reset. RECOVERING with all loops open.
18:16 GG m=32.3kg. All loops locked but loops 2 and 3 at pressure of ~ 0.37b.
Tue 16/May/06   RT AP Installation of sector 2 on loop 4.
Wed 17/May/06 Morning RT GG AP System ALARM. Loops evacuated. During evacuation of loop #4 probable air pollution due to ventilation with open vapours valves.
Afternoon RT AP Leak test on loop 4.
15:30 RT AP Loop 2,3 and 4 open, the other locked. Freon flowing test on sector #2 with IR camera: OK. Interlock test with reading of PT1000 on sector #1.
19:17 GG RT m=16.6kg. No liquid in the compressor. Loop 2 and 4 closed.
19:33 GG RT STANDBY. Closed also loop 3.
Tue 30/May/06 10:25 GG Recovered from ALARM. Opened all the loops. m=29.8kg. Pressure in all loops 1.5ba. Locked all loop but loop 3. Always in STANDBY.
10:33 GG RUN
11:15 GG m=24.8kg. Loops 9 and 10 at 2ba: still liquid in that loops? The others at 1.5ba. Loops 9 and 10 closed.
11:40 GG m=24.0kg.
13:12 GG STANDBY, all loops open. m=21.5kg.
14:16 GG m=25.9kg. All loops closed but loop 3.
14:57 GG m=27.0kg. RUN
16:09 GG m=21.2kg. STANDBY, all loops open.
16:22 GG m=23.4kg. Closed all loop but 2. RUN
17:05 GG m=20.6kg. STANDBY.
17:35 GG m=23.9kg. Closed all loop but 2. RUN
18:49 GG m=19kg. No liquid in the compressor yet. The top pressure in the vapuor manifold is 1.70ba, at the bottom is 1.88ba: difference given by the liquid column.
18:59 GG m=18.9kg. STANDBY. All loops open.

Type ^ to repeat the date.

To June 2006

ID Name
GG Gianluca Guaglio
SC Simone Ceresa
IAC Ivan Amos Cali
RT Rosario Turrisi
AP Adriano Pepato


Cooling System

-- Main.gguaglio - 15 May 2006

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Topic revision: r8 - 2006-06-15 - unknown
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