What Are Bac Cooling Tower Spare Parts

Here is a practical, field-oriented overview of BAC (Baltimore Aircoil Company) cooling tower spare parts, organized the same way BAC and service contractors classify them.

1. Mechanical Drive System Spares

Fan Assembly

* Fan blades (FRP / aluminum / composite)

* Fan hub

* Fan blade hardware & pitch angle shims

* Fan stack (fiberglass or HDG steel)

Motor

* Cooling tower motor (TEFC / TENV / EC motor)

* Motor bearings

* Motor drip cover

* Motor terminal box & glands

Gear Drive (if applicable)

* Right-angle gearbox

* Gearbox input/output seals

* Gear oil (ISO VG 220 / 320 – per BAC spec)

* Flexible coupling

* Drive shaft / spacer

2. Water Distribution System Spares

Spray System

* Spray nozzles (ABS / PP / PVC)

* Orifice inserts

* Grommets & O-rings

* Spray header pipes

* Distribution basin covers (for gravity systems)

Distribution Basin (Open Towers)

* Basin screens / strainers

* Basin covers

* Weir plates

3. Heat Transfer Components

Fill & Coil

* PVC fill packs (film or splash type)

* Fill support grids

* Closed-circuit coils (galvanized, stainless steel)

* Coil gaskets & flanges

Drift Eliminators

* Drift eliminator blades

* Support frames

* Clip & fastener sets

4. Air System & Casing Parts

* Air inlet louvers (PVC / FRP)

* Access doors & panels

* Casing panels

* Fasteners (SS / HDG)

* Seal strips & gaskets

5. Basin & Water Level Control Spares

* Float valve (mechanical)

* Electronic water level controller

* Make-up water valve

* Overflow fitting

* Drain valve

6. Electrical & Control Spares

* VFD (for fan motor)

* EC motor controller (for BAC EC towers)

* Temperature sensors

* Vibration switch

* Level switches

* Control panel components

7. Water Treatment & Maintenance Spares

* Blowdown valve (manual or auto)

* Conductivity controller

* Side-stream filter elements

* Chemical dosing injectors

8. Common BAC Models & Typical Spare Focus

9. Recommended Spare Parts Strategy (Best Practice)

Critical (Keep On-Site)

* Fan motor

* Fan blade set

* Spray nozzles

* Gearbox seals

* Float valve

Essential (Short Lead Time)

* Drift eliminators

* Fill packs

* VFD components

Non-Critical

* Panels, louvers, covers

10. Important Notes When Ordering BAC Spares ⚠️

Always provide:

* BAC model & serial number

* Number of cells

* Year of manufacture

* Voltage & motor details

* Material requirement (PVC / SS / HDG)

BAC parts are model-specific — mixing parts from different series can cause performance loss.