bids are invited for repair and overhauling service - repair on fwd ac system; m/s bock; no; buyer premises fwd ac compressor observed to be triping frequently due to low oil trip. suspected lub oil separator defective. job involves:- (a) compressor discharge line and condenser suction line to be blanked through brazing (b) system gas to be recovered and stored in freon bottle. (c) lub oil separator removed from position and fitted back post repairs (d) system to be pressure tested through nitrogen pressure test (e) vacuum test of system and refilling of gas to be carried out (f) fwd ac system to be proved for satisfactory operation. all in way job includes total quantity :