+ u6 l, U* X) WWhen open a motor connection box, 8 j' h0 v: |6 L# LBeside three phase wires for the power, + O4 ]4 c/ C e* f0 \! B# U: kWe have another two wires marked as P1 and P2 + \6 V7 X; J+ x G5 \; Y0 O) n. K# ^What is that for(P1, P2)? # f2 |% @ ^$ BMost of the time, they are not used. ; L. c) ?) F" E7 d3 H1 p + ]9 U0 l0 k, d) A% T5 GThanks!
Good question!1 c+ D% c' h/ i. W* @
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I think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out. ! s5 b0 O0 O+ _ , L P3 J) T# T" z/ nTry the following website for details:6 Z! F4 g9 u. ^# W) ~; g0 ] http://www.fine-ny.com/pdfs/Fuji-Electrical-Apps.pdf