Toxalert GVU-3 Manual de usuario descargar pdf

GENERAL DESCRIPTION:

The GVU-3 ventilation control system combines toxic gas-based and time-based fan control modes in an all solid-state, low

maintenance, cost effective product.

The GVU-3 series controller can monitor up to three (3) GVU-CO sensors; (3) GVU-CO

sensors, (3) GVU-NO

sensors, (3)

GVU-VOC sensors; or any combination of sensors. The GVU-3 Controller consists of the power supply, solid state clocks, time

delays, output relays, terminal strips, 3 sensor alarm LED’s and a green LED to indicate power to remote sensors.

The GVU-CO sensor is microprocessor based and is temperature and humidity compensated for stability. The GVU-CO sensor

range is 0 to 250 ppm. The transducer utilizes a tinoxide sensing element that is cleaned and sampled by the microprocessor. The

GVU-CO indicates its status via a two color LED (light emitting diode). When the LED is flashing green, operation is normal

and not in alarm. When the LED is flashing red, the unit is in alarm (high CO); a continuous red or green indicates sensor

failure; and LED extinguished indicates power failure.

See separate specification data sheet for information regarding GVU-CO

carbon dioxide sensors, GVU-NO

nitrogen dioxide

sensor and GVU-VOC smoke/air quality sensor.

TIME CONTROL:

The systems “hour” clock outputs to it’s “fan-on” relay once per hour causing it to

energize. The “on” time of the “fan-on” relay is user adjustable, in one minute

settings from 1 to 8 minutes. The “hour” clock operates in this manner irrespective

of gas concentration, and may be disabled, if desired. To disable “hour” clock

operation, place switch S3 to RST (RESET) position.

DETECTION CONTROL:

Should a high gas concentration occur (above user-adjustable alarm level), an alarm

signal from any sensor unit starts a 30 second delay. Should the concentration persist

through the delay period, the “alarm” clock is activated. The “on” time of this clock,

is user-adjustable in discrete settings from 1 to 8 minutes and its setting is indepen-

dent of the “hour clock” setting. Upon activation of the “alarm” clock, the “fan-on”

relay energizes and remains energized until the “alarm clock” times out. Should the

high concentration still be above the alarm level, the “fan-on” relay will remain ON

and the “warning” relay will energize. This condition is maintained until the high

concentration drops.

In the event of a power failure, the control unit sets itself to an alarm condition upon

power restoration. Thus, fan activation is assured, to clear possible accumulated

toxic gases.

DATA

SHEET

MODEL GVU-3

CONTROL PANEL

FEATURES

OPTIONS

• Audible alarm with silence switch

• Power ON, Fan ON LED’s on face of controller

• Red LED to indicate high gas concentration for each sensor

• Visual indication of high gas concentration level and fan on

• Automatic fan start-up upon power restoration following power outage

• Operating range meets OSHA std. 1910.1000

• User adjustable clock-activation of fans, if desired

• NEMA 1 std., others available

• Sensor alarm LED’s on face of controller

• Controller key lock

CO, CO

, NO

, AND/OR VOC MONITOR

VEHICLE EXHAUST GAS DETECTOR

TOXALERT

TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 (952) 472-4541 FAX (952) 472-4960

Visit our website at www. toxalert. com

• Fully electronic for long life

• User adjustable alarm setting

• User adjustable minimum fan run time

• User adjustable 2nd stage activation

• One person field calibration

• UL listed components

• Key locking sensor

1 2 3 4

Indice de contenidos

Pagina 1 - TOXALERT

GENERAL DESCRIPTION:The GVU-3 ventilation control system combines toxic gas-based and time-based fan control modes in an all solid-state, lowmaintenan

Pagina 2 - INSTALLATION INSTRUCTIONS

SPECIFICATIONSInput Power: 120 VAC, 60 Hz, 1A (fused)Relay Contacts: 24 VAC, 2A resistive, 1.5 inductiveDiscrete Clock Settings: 1 minute intervalsAut

Pagina 3

2) Connect dry contacts of alarm Kl (TB1-6 and TB1-7) toalarm device (optional).3) Connect dry contacts of fan relay K2 (TB1-4 and TB1 5)to fan pilot

Pagina 4 - GVU-3 2/06 TMK

5. ALARM SETTING PROCEDURESAll sensors are factory calibrated for their specific setpoint.Periodic calibration is required and performed at the sensor

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Toxalert GVU-3 Manual de usuario

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