Hitachi H100C, Technical Notes

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Ta ble 30. In it ia l in spect ion
Tim e of init ia l inspect ion Ma jor inspect ion it em s
Im m ediat ely
befor e
･
Ch eck wh et her scr ews ar e fu lly tigh t ened.
Con fir m n ot on ly t he t erm in als t o wh ich wir es
a r e con n ect ed bu t a lso t h ose t o wh ich no
wire is con nected.
･
Ch eck wh et her sm a ll it em s such a s a scr ew,
wash er, ch ip, wir e wast e, et c. h a ve in filtr a t ed
t h e switch .
･
Ch eck wh et her t h er e is a n y err on eou s wir in g.
St a rt in g t im e of
oper at ion
Im m ediat ely
a ft er
･
Ch eck wh et her t h e con t act or is closed per -
fect ly .
･
Ch eck wh et her t h e elect r om a gn et pr odu ces
a bn or m a l beat s.
･
Ch eck wh et her t h er e occu rs inst a n t a neous
a r cin g from a rc suppressin g ch am ber du e t o
st ar t in g cur r ent of m ot or wh en closin g t h e
con t act or . If t h e a rcin g is gr ea t er t h a n a t t h e
br eak in g t im e, it is n ecessa r y t o ch eck.
Aft er ent er in g n orm a l oper a tion ,
･
3 t o 10 da ys aft er
･
3 m ont hs aft er
･
Ch eck scr ews for loosen in g.
･
Ch eck wh et her dust or oil ar e a dher in g t o a n y
pa r t . If a n y for eign m a t t er is fou nd t o be
a dh er in g, in vest igat e t h e ca use.
･
Tu r n off t h e power a nd m ove t h e m ovin g par t
by h a n d.
･
Ch eck wh et her t h e con t act is wor n. If a bn orm a l
wear is foun d, in vest iga t e t h e ca use.
･
Re-confir m t h e inspect ion it em s requ ired
im m edia t ely before a nd a ft er oper at ion.
(2) P er iodica l inspect ion
(a ) Tim e of per iodical in spect ion
Wh en t h e inspect ion is ca r r ied ou t t ak in g in t o consider a t ion t h e en vir onm ent a nd t h e fr equ ency of u se as given
in Ta ble 31 , appr opr iat e secu r it y a nd pr even t ion m a y be expect ed.
Ta ble 31. Tim e of per iodical in spect ion
In t er va l of per iodica l in spect ion E n vir on men t of use
Con t a ct pa rt Oper a tin g pa r t
A clean a nd dr y pla ce E ver y 12 t o 36 m on t hs
A place which is rela t ively free of dust,
h u m idit y, sa lt , cor r osive ga s, va por , et c.
E ver y 12 mon t hs
In spect ion t im e
a ccordin g t o
en vir onm ent
P la ces ot h er t h a n t h e a bove. E ver y 3 t o 6 m on t hs
100-t im es/h r (30,000-times/m on t h) or less E ver y 12 mon t hs E ver y 36 m on t hs
200-t im es/h r (60,000-times/m on t h) or less E ver y 6 m on t hs E ver y 24 m on t hs
600-t im es/h r (200,000-t imes/m on t h) or less E ver y 2 m on t hs E ver y 12 m on t hs
Wh en oper a t in g
fr equen cy is
gr ea t
1,200-t im es/h r (360,000 t im es/m on t h) or less E ver y m on t h E ver y 6 m on t hs
F or sever e use su ch as inch in g, plu ggin g, et c. Determ in ed corr espondin g t o t he act u al st at e of use.