April 2006

To March 2006

Type ^ to repeat the date.

Date Hour ID Note
Wed 04/Apr/06 11:00 GG Weight 32.6 kg. All loops locked.
Thu 06/Apr/06 15:20 GG System in STAND/BY
Mon 10/Apr/06 14:40 SC System in recovering, open loop1 pression (0.630 b; 0.610 b). Weight 31.710
16:15 SC Loop1 locked, System in STAND/BY. Weight 32.060
Tue 11/Apr/06 19:15 SC System Off, weight 31.68
Fri 21/Apr/06 15:25 SC System Off, weight 32.45
15:31 SC System Run Mode and after open the loop2
16:40 SC System in Recovering,loop2 open, weight 27 Kg
Thu 27/Apr/06 15:30 GG PVSS interface not connected with the system. Network is OK but no answer from the system. PLC network module problem?
18:00 GG System switched to XBT control. STANBY with all loops open.
Fri 28/Apr/06 12:22 GG System in RECOVERING. Loop 2 open, all the others closed.
13:58 GG Loop 2 still open, the others locked. STANDBY.
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.

Type ^ to repeat the date.

To May 2006

ID Name
GG Gianluca Guaglio
SC Simone Ceresa


Cooling System

-- Main.gguaglio - 04 Apr 2006

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Topic revision: r26 - 2006-05-15 - unknown
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