Section 8
TROUBLESHOOTING
37
8.1 INTRODUCTION
The following information has been compiled
from operational experience with your package.
It identifies symptoms and describes probable
causes for problems. However DO NOT assume
that these are the only problems that may occur.
The collection of operational data concerning
possible trouble should be analyzed to prevent
complete compressor breakdown. An example
of this would be the vibrations signature in -
crease of a damaged bearing or the efficiency
decrease of a dirty heat exchanger.
A detailed visual inspection should be per-
formed for all problems. Always remember to:
1. Check for loose wiring.
2. Check for damaged piping.
3. Check for parts damaged by heat or an electri-
cal short circuit, usually apparent by discolor-
ation or a burnt odor.
Should your problem persist after making the
recommended check, consult you r n earest Sull-
air representative or the Sullair Corporation.
8.2 TROUBLESHOOTING
SYMPTOM/MESSAGE PROBABLE CAUSE REMEDY
COMPRESSOR WILL NOT START; Main Disconnect Switch O p en Close switch.
POWER LED OFF
Line Fuse Blown Replace fuse.
Control Tran sformer Fuse Blown Replace fu se.
MOTOR OL Motor Starter Overloads Tripped Reset after heater elements cool
down. Should trouble persist, check
whether motor starter contacts are
functioning p rop erly.
Low Incoming Line Voltage Check voltage. Should voltage check
low, consult power company.
T--- 1, T--- 2, T--- 3 Temperature Transducer Failure Check connections from
T --- 4 , T --- 5 F A I L t r a n s d u c e r. I f a d e q u a t e , r e p l a c e
transducer.
P--- 1, P---2, P--- 3 Pressure Transducer Failure Check connections from
P --- 4 F A I L transducer. If adequate, replace
transducer.
E--- STOP Emergency Switch Open Close switch (pull).
(Depressed)
COOL FLT Cooling Fan Motor Starter Overloads Reset after heater elements cool
Tripped down. Should trouble persist, check
whether motor starter contacts are
functioning p rop erly.
COMPRESSOR SHUTS DOWN Motor Starter Overloads Tripped Reset after heater elements cool
WITH AIR DEMAND: down. Should trouble persist,
MOTOR OL check whether motor starter contacts
are functioning properly.(I)
Low Incoming Line Voltage Check voltage. Should voltage
check low, consult power company.
P2 LO The Machine Ran at a Final Discharge Adjust valve downstream of p ackage to
Pressure Below 50 psig (3.4 bar) for hold minimum 70 psig (4.8 bar) line
five minutes pressure.
P3 LO Oil Pressure Falls Below 25 psig
(1.7 bar) While Package is Running
Because:
Oil Pump Malfunctioned Consult Sullair Service Dept.
Oil Filter Clogged Replace filter element.
(I) Also check that the compressor---motor driveline rotates freely. In case of rotating resistance or rubbing, contact
Sullair Service Department.
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