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Several passes are required until all screws are
torqued to specified tightening torque of 42 ft.---lbs.
(57 Nm). Check tightening torque (42 ft.---lbs. [57
Nm]) with a torque wrench. Both collars must re-
main in equal distance.
REMOVAL
Shrink disc removal procedure is similar to installa-
tion.
1. Gradually release locking screws all the way
around. Initially each screw should be released
about a quarter of a turn only. Thus tilting and
jamming of collars will be avoided. DO NOT re-
move locking screws.
2. Remove shaft or pull hub from the shaft. Any rust
formed on shaft in front of hub must first be re-
moved.
3. Pull shrink disc from hub.
CLEANING AND LUBRICATION
Removed shrink discs need not to be taken apart or
lubricated prior to reinstallation. Only a dirty shrink
disc should be cleaned and lubricated.
For the tapered surfaces, one of the following lubri-
cants should be used:
TABLE 2--- LUBRICATION
LUBRICANT (MoS2)
Molykote 321 R
(lube coat)
Molykote Spray
(powder spray)
Molykote G Rapid
Aemason M O 1 9 P
DIO---setral 57 N
(lube coat)
Locking screws are lubricated with a multipur-
pose grease such as Molykote BR 2 or similar.
Damaged o---rings must be replaced.
MOTOR CONNECTION INSTRUCTIONS
1. Once a year while the equipment is discon-
nected from the power source and locked out
6.9 TROUBLESHOOTING GUIDE
SYMPTOM
COMPRESSOR WILL NOT START
6.8 TROUBLESHOOTING INTRODUCTION
TYPE
Spray
Spray
Spray or
Paste
Spray or
Paste
PROBABLE CAUSE
Main Disconnect Switch Open
Line Fuse Blown
Control Transformer Fuse Blown
Motor Starter Overloads Tripped
MAINTENANCE
for maintenance, remove the cover to the motor
conduit box.
2. Inspect the rubber boots' or connections' insu-
lating materials covering the motor connections
for signs of thermal damage.
3. If boots or insulating material remain pliable and
there is no sign of damage, connections are sat-
isfactory.
4. If boot or insulating material show distress as
mentioned above, then investigate to determine
the source of thermal damage and repair the
connection as necessary.
5. Replace the damaged boot(s) with new boot(s)
as required or retape connections per National,
State or Local codes.
6. Replace the conduit cover prior to reconnecting
the power source.
WARNING
!
Electrical shock hazard. Disconnect all power at
the source before attempting maintenance.
The following information has been compiled from
operational experience with your package. It identi-
fies symptoms and diagnosis of SEVERAL prob-
able difficulties, but NOT ALL of those possible.
The systematic collection of operational data can-
not be over---emphasized, as it may give evidence
of the presence (or not) of a fault before it turns into
a serious breakdown --- for example, the vibrations
signature increase of a damaged bearing, or the ef-
ficiency decrease of a dirty heat exchanger.
A detailed visual inspection is worth performing for
almost all problems and may avoid unnecessary
additional damage to the compressor. Always re-
member to:
1. Check for loose wiring.
2. Check for damaged piping.
3. Check for parts damaged by heat or an electrical
short circuit, usually apparent by discoloration
or a burnt odor.
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair
r epr esentative or the
S ul l a ir Cor por
Close switch.
Replace fuse.
Replace fuse.
Reset. Should trouble persist, check
whether motor starter contacts are
functioning properly.
Section 6
ation.
REMEDY
35
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