Quality Bulletin Saravanan Prepared CKD SNo Horizontal deployment

Quality Bulletin Saravanan Prepared CKD S/No. Horizontal deployment Approved By Product REFRIGERATOR Running model Capillary choke 191 Lts – Powder form observed in Capillary pipe § White particles in capillary § 1. Evaporator brazing with white powder 2. Oil choke due to compressor 3. No N 2 flushing of Evaporators Recommendation: 235 lts can be repairable easily in place of product replacement Date of imp Nov’ 2015 Count measure High potential causes : Compressor is the common factor 191 Evaporator found with white powder 191 - white powder usage in Evaporator welding (Accumulator & tubes )) One end Seal powder usage for brazing 191 ltr Length of Capillary - 3. 4 mts New compressor introduction for both models 191/235( Under Validation ) 191 ltr – Evaporator aluminium joints implementation in place of using flux powder Both end aluminium welding` 235 ltr evaporator: Before QA System New part approval Claim date Cause 1. § 235 – Oil choke/ partial choke observed Re-FPA Claim section Model Frost Free Quality issue New model Improved QA System 1. Brazing method changed from vendor end 2. New compressor introduction for 191/235 lts 3. 100% N 2 flushing started PATD / ICTS / Test Std. / IG control no. ECN No. JIR control no. Others) NA

Problem Definition : 191 - white particles in the system Possible causes: 235 - No white particles in the system Repair possibility: Possible causes: Ø White particles Ø Moisture Choke ØOil choke ØPoor Handling Note: N 2. Flushing is must Repair possibility: 191 Capillary change procedure attached here. Length of Capillary - 3. 4 mts 2 Applicomp, Bangalore

Field Fix for 191 & 235 Ltr: ID- 0. 67 mm OD- <2. 0 mm 191 Capillary change procedure Length of Capillary - 3. 4 mts Open Cover evaporator Lift Evaporator Insert External capillary White particles in capillary Insert through Drain cap Braze another end with Eva. Take loop to bottom from drain pipe Braze with Dryer Roll the Capillary Make dummy exiting capillary 235 ltr can be recharged with proper flushing & vacummization Note: N 2. Flushing is must 3 Applicomp, Bangalore