NVE 4307 - Page 38

38 | 4307 & 4310 Blower
Probable Cause Remedy
A
Rotors are contacng each other Stop the blower immediately and check the internal
clearances of the blower.
B
Deposit build up on cylinder wall Clean the cylinder walls and rotors.
C
Object was ingested into the blower Remove the object, clean the internal walls of blower
and check the internal clearances.
D
Inlet plumbing or lter clogged Check and clean the inlet plumbing and lter.
E
Blower not at correct RPM Verify blower RPM and adjust accordingly.
F
Exhaust plumbing clogged Clean exhaust plumbing and muers.
G
Rotors are worn Verify internal clearances and replace or rebuild
blower as necessary.
H
Ballast plumbing is clogged Check and clean the ballast plumbing. If a ballast
lter is installed, clean it also.
J
Ballast air temperature out of speci-
caon
Verify ballast air temperature is within specicaon
and adjust accordingly
K
Inlet temperature out of specicaon Verify inlet temperature is within specicaon and
adjust accordingly
L
Bearings worn Have blower rebuilt
M
Oil level too high Check required oil level in each tank and remover oil
as necessary.
N
Coupler or belts not aligned Check the alignment
P
Oil tank gaskets worn Replace oil tank gaskets
R
Drive sha seal worn Replace sha seal for drive oil tank
S
Oil tank plugs or sight eyes fault Replace the plugs or sight eyes. Use thread sealer on
NPT threads.
T
Blower operated at excessive angle Verify blower is level during operaon
U
Oil too thick Use correct viscosity oil.
V
Oil is foaming Use correct type of oil
W
Operang Diesel engine at too low of
an RPM causing rotor contact.
Increase Engine RPM and adjust drive raos accord-
ing. Use a vibraon dampened drive sha.
X
Moisture trap or shut o is full and
closed o
Empty the moisture trap or shut o of uid.
Y
Plugged or collapsed hose (not always
visible from outside of hose)
Unplug or replace hoses
Z
Vacuum Leaks in tank or ngs Repair leaks
AA
Four way valve not fully seated in
proper posion
Seat the 4-way valve. Clean if debris built up has
occurred.
AB
Faulty relief valve Replace relief valve
AC
Rotors ming is o Have blower rebuilt
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