It seems that vacuum pump oil price has gone up recently; for awhile I have been purchasing , from Specialty
Fluids
Co.? their type MVT-20 which is apparently a hydrocarbon dual use ( diffusion and mechanical). I have had good experience using it. I am considering their MVT-19 which costs less. I have also started using the INLAND 19 TOP QUALITY HIGH VACUUM PUMP OIL ; its in my opinion? very good . However I must confess my vacuum experience is very limited; I am in the learning mode. I am hoping to look into Duniway to see if it is a better fit to the beer budget.
Regarding the exploded
parts diagram for the 1402 pump; item 17 "center plate" is shown to be one component; I can say for my 1402 that the center plate is split into two halves not indicated on the diagram. Having semi-circular cavities facing each other also not indicated. I don't know why this is not illustrated.
Regarding freeze up besides rust rotor? and stator components keeping then from sliding; I should have mentioned when I was working on my 1402; the components were somewhat frozen ( hard to rotate the
shaft) because the rotor and stator were not lined up correctly ( as suggested from the Sam's FAQ) ; that's why I assembled it with the bolts loose then rotated the shaft with the system in oil; then later tightened the bolts; did? not have the alignment paper as discussed in the FAQ link; so I assumed this to be the next best thing working in the dark ( ie limited information found on the Web) .Another incident occured with a 1400 that I bought for very cheep had the vane rod bent keeping the vane from sliding in and out the rotor.
The 1402 that I recently got on Ebay didn't have exhaust or air intake components. With my limited knowledge as to where to get replacement components; found out the nipple replacements were outside the beer budget. After finding the required thread 1-20 I found http://www.amazon.com/dp/B000BPGRXI/ref=pe_175190_21431760_M3T1_ST1_dp_i1 and purchased three. With my metal lathe the hole was enlarged to fit a hose barb purchased from the hardware store. The intake was assembled using? solder. I then used the Loctite 592 with Teflon tape; seems to work OK.?
