Page 33 - DeltaT

AC Fan Control Systems

T4 Automatic/Manual Fan Control Systems

Delta “T” Systems
600-T4 Automatic Ventilation
Control System
INSTALLATION &
OPERATION MANUAL

Project Number
Proprietary Material - All Rights Reserved - Delta “T” Systems, Inc. - Copyright 2009

Overview - TheT4 Series Ventilation Control Systems two or more three-phase fans via a digital touch screen
is a state-of-the-art digital ventilation control systems Fan Control Interface (FCI). Each system may be
that has been designed and manufactured specifically configured to accept single or three phase AC input
for the rigors of the marine engine room. power to the ASDs (Adjustable Speed Drives), de-
Delta “T” Systems has supplied thousands of the T4 Fan pending on the available power aboard the vessel.
Control Systems to vessels all over the world, and Auto Mode: The T4 system starts in Auto Mode when the
has added the features that the captains and ship’s engines are started. In Auto Mode, the T4 system regu-
engineers have requested to make the T4 the control lates both the intake and exhaust fans based on engine
systems of choice for offshore vessels of every type. room temperature alone.

The T4 each may be run in automatic or manual mode. Quiet Run: Upon main engine shut down, the T4
Normal operation is in automatic mode which goes into ventilation control system switches to the Quiet
effect as soon as the vessel’s engines are started. In Auto- Run Mode which cools the engine room down at
matic mode, engine room temperature and combustion air a user specified fixed fan speed. Once the user
intake are automatically controlled to optimum levels based specified temperature has been reached, the fans
only on the engine room temperature and not the engine will stop thermostatically.
room’s differential pressure.
Manual Mode: In addition to the two automatic
The system includes a color touch screen Fan Control modes of operation there is also a Manual Mode. The
Interface (FCI) and an integrated alarm output that can Manual Mode allows the operator to control the fan speed
be connected to a vessel’s central alarm system. Help and direction independently for maintenance within the en-
screens and simplified parameter and monitoring screens gine room or unusual situations. This mode of operation is
make operation and adjustment fast and easy. The not recommended for use when underway and the main
T4 Series Systems allows the variable speed control of engines are running.

Delta T Systems, Inc. 858 West 13th Court, Riviera Beach, Florida 33404 561-204-1500 www.deltatsystems.com Delta T Systems, Inc. 858 West 13th Court, Riviera Beach, Florida 33404 561-204-1500 www.deltatsystems.com