Operation & Maintenance Manual
Zephyr Ceiling/Wall Ventilating Fans Model Z1
Troubleshooting Checklist
Note:
Care should be taken to follow all local electrical, safety and building codes. Provisions of the National Electric Code (NEC), as wells as the Occupational Safety
and Health Act (OSHA) should be followed.
All motors are checked prior to shipment. If motor defects should develop, prompt service can be obtained from the nearest author-
ized service station of the motor manufacturer while under warranty. Exchange, repair or replacement will be provided on a no
charge basis if the motor is defective within the warranty period. The PennBarry representative in your area will provide a name and
address of an authorized service station if requested. WARNING: Motor guarantee is void unless overload protection is provided in
motor wiring circuit.
PENNBARRY 3
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202
Fax: 972-497-0468
Symptom
Possible Cause(s)
Corrective Action
Excessive noise
1. Defective or loose motor bearings
1. Replace motor with same frame size, RPM, HP
2. Ventilator base not securely anchored
2. Reset properly
3. Loose or unbalanced wheel/propeller
3. Tighten screws, remove build-up,
balance wheel/propeller
4. Misaligned pulleys or shaft
4. correct alignment
5. Loose or damaged wheel/propeller
4. Replace wheel/propeller
6. Wheel running in wrong direction
6. Reverse direction
Fan inoperative
1. Blown fuse or open circuit breaker
1. Replace fuses or circuit breaker
2. Loose or disconnected wiring
2. Shut off power and check wiring
for proper connections
3. Defective motor
3. Repair or replace motor
4. Broken belts
4. Replace belts
Insufficient airflow
1. Open access doors or loose sections of ducts
1. Check for leakage
2. Clogged filters
2. Clean filters
3. Operation in wrong direction
3. Correct rotation of wheel/propeller
4. Insufficient make-up air direction
4. Add make-up fan or louver opening
Water leaking
into ductwork or
collection of grease
under fan
1. Fan installed with slope in the wrong direction
1. Slope should be fitted in the direction of the
drainage opening or grease collection box and
drain spout
2. Clogged drain spout
2. Clean drain spout
3. Cooling tube or motor dome top removed
3. Install new cooling tube
with gasket and dome top
4. Grease container full
4. Empty grease box
Motor overheating
1. Belt slippage
1. Adjust tension or replace bad belts
2. Overvoltage or under voltage
2. Contact power supply company
3. Operation in wrong direction
3. Reverse direction of motor
4. Fan speed too high
4. Slow down fan by opening variable pitch
pulley on motor shaft
5. Incorrect motor (service factor 1.0,
low ambient temperature)
5. Replace motor with correct open,
NEMA service factors (1.15 or higher)
with 40 degrees ambient
6. Blocked cooling tube or leaky gasket
6. Remove blockage and seal cooling tube in place
7. Insufficient airflow to kitchen hood fan operating
on low speed with kitchen in full operation
7. Check airflow under hood and adjust
kitchen equipment output
8. Undersized motor
8. Check motor ratings with catalog speed
and air capacity chart
