Troubleshooting - PMI CF2300 Serie Manual De Uso Y Cuidado

Troubleshooting:

The following guide is intended to help you diagnose and fix some of the most commonly encountered problems; by no means does this
guide cover all of the possible problems you may encounter. If you cannot diagnose and correct the problem, or if it persists, contact
qualified service personnel. All electrical work should be done by, or with the help of, a qualified electrician.
PROBLEM / SYMPTOM:
Units fails to start or deliver air
Unit starts, air delivery
inadequate
Inadequate cooling
Motor cycles or fails to operate
Water draining from unit
Knocking or banging sound
Fan assembly shakes or rattles
Excessive humidity inside
Musty or unpleasant odor
8 Industrial Fan Cooler - Use and Care Manual
POSSIBLE CAUSE:
1. No electrical power to unit
A. Fuse blown
B. Circuit breaker tripped
2. Belt loose or broken
3. Motor overloaded and/or frozen bearings
A. Belt too tight or broken
B. Fan blade bearings dry / frozen
C. Motor overloaded
D. Inadequate wiring, non-functional
breaker or motor starter
1. Lack of adequate air exhaust
2. Motor under loaded
3. Belt too loose
1. Inadequate exhaust from building
2. Air registers / diffusers improperly set
3. Inadequate water supply / pad not wet
A. Pads clogged
B. Dry or open spots on pad
C. Trough holes / slots plugged
D. Pump not working
E. Loose connections in water system
F. Distributor clogged or corroded
G. Inadequate bleed-off (pads clogging)
H. Pump basket clogged
1. Excessive belt tension
2. Fan blade shaft tight or frozen
3. Motor overloaded
4. Pulleys mis-aligned
1. Float arm improperly set
2. Seat in float valve leaking
3. Standpipe not tight
1. Bearings dry
2. Rotating off-balance
3. Loose parts
1. Belt or pulley loose
1. Inadequate exhaust from building
1. Stale or stagnant water in cooler
2. Pads clogged or mildewed
3. Pads not completely wet before
starting fan motor
CORRECTIVE ACTION:
1. Check power supply
A. Replace fuse*
B. Reset breaker*
2. Adjust or replace belt
3. Replace motor or bearings
A. Adjust belt tension or replace
B. Replace bearings
C. Open relief vents to increase exhaust*
D. Call electrician
1. Open relief vents to increase exhaust
2. Adjust relief vents to increase exhaust
3. Adjust belt tension or replace
1. Open relief vents to increase exhaust
2. Adjust to direct airflow as required
3. Check water distribution system
A. Replace pads
B. Repack pads
C. Clean troughs, unplug holes
D. Clean or replace pump
E. Check for leaks and correct
F. Clean or replace distributor
G. Clean or replace bleed-off
H. Clean basket
1. Adjust belt tension
2. Replace bearings
3. Close relief vents to decrease exhaust*
4. Check and correct alignment
1. Adjust float
2. Replace float valve
3. Tighten standpipe (hand tight)
1. Replace bearings
2. Inspect fan assembly, replace if necessary
3. Inspect fan components, tighten
1. Inspect and adjust, replace as required
1. Open relief vents to increase exhaust
1. Drain, clean and flush reservoir
2. Check bleed-off, replace pads
3. Turn pump ON for several minutes
prior to starting cooler
* - If condition persists, call electrican