4. TROUBLE SHOOTING
P RO BL EM
CA USE
SO L UT IO N
In su fficien t
A ir q u an tity
ㆍ Filter is c logged
ㆍ Too muc h Clea ra nce
ㆍ Clea n or Cha nge FIL TER
ㆍ Chec k Clea ra nce
O v e rlo ad o n
E le ctric M o to r
ㆍ Foreign ma tter a re c a ught in
ㆍ Pressure loss in Piping is inc rea sed
(inc rea se in S uction Pressure)
ㆍ interferenc e betw een sc rew s.
ㆍ interferenc e betw een S c rew a nd Ca sing
ㆍ Disc ha rge w ith Cooling w a ter flow
ㆍ Clea n or Cha nge Filter
ㆍ Adjust or Replac e the S c rew a nd
Ca sing
ㆍ Chec k the pressure differenc e
betw een Inlet a nd Outlet
ㆍ Adjust improper S c rew c lea ra nce.
A djust Timing G ea r
ㆍ M a ke the S ide Clea ra nce la rger /
M a ke the c lea ra nce betw een S c rew
a nd Ca sing la rger.
ㆍ Dra in & c lea n D isc ha rge line
O v e rh e at
ㆍ Exc essive lubric a nt in Front End Cover
ㆍ Va c uum Pump inlet tempera ture high
ㆍ Too muc h Compress ion ra tio
ㆍ Interferenc e betw een Rotor a nd Ca sing
ㆍ Problem w ith Cooling w a ter flow
ㆍ Chec k Oil level
ㆍ Chec k suc tion & disc ha rge pressure
ㆍ S ea rch for the c a use of interferenc e
ㆍ Cle an Co o lin g w ate r k line
K n o ck ing
ㆍ Interrela ted position betw een Timing
G ea r a nd Rotor is inc orrec t
ㆍ Improper a ssembly
ㆍ Abnorma l ris e in pressure
ㆍ Da mage on gea r due to overloa d or
improper lubric a tion
ㆍ R e p o sitio n
ㆍ R e asse mb le
ㆍ Se arch fo r th e cau se
ㆍ R e p lace T imin g G e ar
Be arin g o r
G e ar d amag e d
/ Sh aft b ro ke n
ㆍ Improper lubric a nt
ㆍ L ubric a nt runs short
ㆍ Overloa d
ㆍ Ch an g e lu b rican t
ㆍ R e fill lu b rican t
ㆍ R e p lace th e Sh aft
※
If the troubles are not resolved by the above mentioned actions, the cause may possibly be
located in Pump operation condition. In such case, please contact us with the following
information.
1. Model Name & Number Serial Number, Application, etc.
2. Information of Piping (Valve, Strainer, Number of Bends, etc.)
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