T5 Pump Flow Control; Anti Drainback; Semi - Thermo Scientific ThermoFlex Manual De Instrucciones

Section 5
T 5 Pump Flow

Anti Drainback

Semiconductor
Equipment and
Materials
International
Chillers
5-6 ThermoFlex
T he flow control valve is used to adjust the flow rate.
The valve's handle is designed to identify the valve's
Control
position, from full flow to full bypass. When the handle
in the horizontal position (in line with the discharge line)
the application is receiving full flow. With the handle is
vertical the valve is in full bypass.
Chillers installed below the end-user application may allow system fluid to
drain back into the chiller and cause spillage. The anti-drainback valve is
designed to prevent any such spillage.
The valve opens just before the pump is turned on and it closes just after
the pump shuts off.
This option is required if your chiller is more than 24 feet below your
application, or if there is a possibility of drain back due to the occasional
opening of the process lines for either application swaps or chiller
servicing.
Compliance
SEMI chillers are compliant with:
SEMI S2-0703 Product Safety Assessment
SEMI S8-0705 Ergonomic Assessment
SEMI S14-0704 Fire Risk Assessment

(SEMI)

SEMI F47-0706
Emergency Off (EMO)
A guarded red mushroom shaped push-button switch with twist-to-reset is
provided on the chiller's front to turn it off in case of an emergency. The
button head is engraved with "EMO" in large white filled letters.
Note The EMO is controlled by a safety circuit and is not influenced by the
chiller's firmware/software.
Activation of the EMO button will remove power from the main contactor
coil stopping operation of the chiller. The controller will display External
EMO.
Resetting the EMO button will not restart the chiller. After all hazards
have been removed reset the chiller by pressing enter on the controller.
In the local mode, the chiller will restart by pressing the START STOP
button again. In the serial communications mode, send the appropriate
start command. In the analog I/O mode, the chiller starts when the error is
cleared.
Chiller Circuit Breaker Interrupt Rating
The main power circuit breaker located on the rear of the chiller has an
Interrupting Capacity (AIC) of 10,000 amps.

Full Flow
Full Bypass
Thermo Scientific