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Chapter 6 – Testing and Repair, Page 6-30___________________________________________________
Main Electrical Raceway Ventilation Fans
Overview
There are two Main Electrical Raceway Ventilation Fans, one is located at one end of the Raceway,
opposite the Electrical Compartment, and one is located in the Electrical Compartment where the ESP
Cell Transformer is located (Refer to Figure 6-42-1 and 6-52-1). The purpose of the Ventilation Fans is to
pull air into the raceway to; 1) help cool the raceway, 2) provide air to the UV Module Ventilation Fans
and 3) to slightly pressurize the raceway to prevent grease from migrating into the area. The fan in the
raceway pulls air through the intake Ventilation Snorkel, located on the top of the Ventilator, and pushes
the air down the raceway and into the Electrical Compartment. The fan in the Electrical helps pull the air
through the raceway and pushes the air through the discharge Ventilation Snorkel located at the top of
the Ventilator.
The Ventilation Snorkels help prevent building insulation and other debris from
obstruction the airflow.
Checking the Main Electrical Raceway Ventilation Fans
The Ventilation Fans run anytime the UV System is on. To check for proper operation proceed as follows:
Raceway Fan
1. Push the START FAN button on the Command Center. Check to make sure the green light on the
group of UVi Status Lights mounted on the Ventilator section is on.
2. Remove the Main Electrical Raceway Access Panel at the end opposite the Electrical Compartment
(Refer to Figure 6-42-1).
3. Observe the Ventilation Fan operating. If operating, reinstall the access panel and tighten the screws
to 7-9 in-lbs. If not operating conduct an electrical test at the connection points for voltage. If there
is voltage, the Ventilation Fan is defective and must be replaced.
Electrical Compartment Fan
1. Push the START FAN button on the Command Center. Check to make sure the green light on the
group of UVi Status Lights mounted on the Ventilator section is on.
2. Open the ESP Cell Access Door.
3. Remove the Plunger Disc by unscrewing counter clockwise (Refer to Figure 6-52-1).
4. Remove the Electrical Compartment Cover Plate (Refer to Figure 6-52-1).
5. Observe the Ventilation Fan operating. If operating, reinstall the access panel and tighten the screws
to 7-9 in-lbs. and re-install the Plunger Disc. If not operating conduct an electrical test at the
connection points for voltage. If there is voltage, the Ventilation Fan is defective and must be
replaced.
Instructions for Replacing the Main Electrical Raceway Ventilation Fans
To replace Ventilation Fan use the following step by step instructions:
1. Turn off all power to the Gaylord Command Center.
2. Turn off all circuits that supply power to the UV Lamps.
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