Labconco Guardian Jr. Airflow Monitors User Manual

Guardian Jr. Airflow Monitor
Models 4865000, 4865001
INSTRUCTION MANUAL
Product designs are subject to change without notice
© 2000 Labconco Corporation 48614 Revision F / ECO A294

TABLE OF CONTENTS

Introduction
Components Shipped 1 General Description 2 Performance 2 Component Identification 3
Installation
Alarm Module 4 Power Supply Module 4 Electrical Connections 5 Protector Hoods 5 8 Foot, 230V Hoods with External Blower 6 Basic 47 and 70 Fume Hoods 6 Perchloric Acid Hoods 6 Radioisotope Hoods 7 Initial Adjustment Setup 7
Installation Drawings 9
Normal Operations
Alarm Activation 11 Alarm Test 11
Electrical Wiring Diagrams
Remote Blower Hoods 115V 12 8' Remote Blower Hoods 117V 13 8' External Blower Hoods 230V 14 4'-5'-6' Integral Blower Hoods 115V 15 Integral Blower Hoods 230V/50Hz 16 Basic 47 & 70 Hoods 115V 17 Basic 47 & 70 Hoods 230V 18 Perchloric Acid Hoods 19 Radioisotope Hoods 20
Troubleshooting 21
Warranty 22
Shipping Claims 23
Contacting Labconco 24

PREFACE

Thank you for displaying confidence in us by selecting a Labconco Guardian Jr. Airflow Monitor. Our design engineers, assemblers and inspectors have utilized their skills and years of experience to ensure that the new Guardian Jr. Airflow Monitor meets our high standards of quality and performance.
IMPORTANT NOTICE
This manual should be read carefully by all the end users in order to become familiar with the operation of the Guardian Jr. Airflow Monitor. Recommendations are made within the manual to help you obtain maximum performance and life from your product.
We have included sections on initial set up, operation, maintenance and troubleshooting to provide you with all the tools necessary to achieve maximum performance.
If you have questions or concerns, do not hesitate to call us at 1-800-821-5525 for assistance.

INTRODUCTION

Components Shipped
Carefully check the contents of this package for damage that may have occurred in transit. Do not discard the carton or packing material until all components have been checked against the following component list and the equipment has been installed and tested.
As shipped, the carton should contain the following:
Model 4865000 – Guardian Jr. Airflow Monitor – 115V 50/60 Hz
Qty Part Number Description
1 4854900 Alarm Module 1 4860600 Power Supply Assembly, 115V 2 1885608 Machine Screw 632 x ½ (Black) 1 4854800 Elbow, Tubing Connector 1 1548104 Probe 1 1919200 Velcro Loop, 1" wide 1 1919300 Velcro Hook, 1" wide 1 1344000 Strain Relief 5 1342200 Tie, Cable 1 4861400 Manual, Instruction 1 3605201 Wire, Assembly (White) 50" long 1 4861500 Wire, Assembly Jumper 2 1346800 Base, Wire Tie 2 1342300 Tie, Cable
Model 4865001 – Guardian Jr. Airflow Monitor – 230V 50/60 Hz
Qty Part Number Description
1 4854900 Alarm Module 1 4860601 Power Supply Assembly, 230V 2 1885608 Machine Screw 632 x ½ (Black) 1 4854800 Elbow, Tubing Connector 1 1548104 Probe 1 1919200 Velcro Loop, 1" wide 1 1919300 Velcro Hook, 1" wide 1 1344000 Strain Relief 5 1342200 Tie, Cable 1 4861400 Manual, Instruction 1 3605201 Wire, Assembly (White) 50" long 2 1346800 Base, Wire Tie 2 1342300 Tie, Cable
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INTRODUCTION
General Description
The Guardian Jr. Airflow Monitor is designed to continuously monitor airflow through fume hoods. This permanently installed device provides both visual and audible alarms to alert the user of abnormal airflow conditions. A green light on the front of the monitor indicates normal flow conditions. When flow conditions lower than the set point are encountered, a red light is activated along with an audible alarm.
A test button is provided at the front of the monitor to allow the user to check the operation of the alarm.
Performance
The Guardian Jr. Airflow Monitor is designed for operation on all new non-explosion proof remote and integral style Protector Fume Hoods. It is also set up for operation for both the new Basic 47 and 70 inch style fume hoods. The monitor itself is available both as a field installed kit or a factory installed option.
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INTRODUCTION
Component Identification
1. Air Inlet A portion of the air coming into the hood passes through the air inlet and across the flow sensors.
2. Normal Flow Indicator This green light indicates normal flow conditions.
3. Alarm Indicator This red light is activated approximately 6 seconds after the low flow set point is reached.
4. Test/Reset Button If no alarm is present, this button will cause the red lamp to light and the audible alarm to sound. If an alarm is present, the button will silence the audible alarm.
5. Adjustment for Alarm Set
Point
This potentiometer is used to set the low flow indicators for the alarm.
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INSTALLATION

Disconnect your fume hood from its electrical service prior to beginning the installation of your new monitor.
The installation of your monitor is separated into two segments, the alarm module and the power supply assembly. Installation is as follows:
Alarm Module
1. Remove the right hand corner cover panel from your Protector Fume Hood. This is achieved by removing the service fixture knobs, if provided, and then removing the three Phillips head screws retained in the corner cover. Remove the black outlet cover plate located in the top electrical position on this panel.
a. If installing the alarm on either the Basic 47 or Basic 70 inch hood, you would need
to remove the right side access panel on the hood to gain access in removing the blank outlet cover plate.
2. Reinstate the corner cover panel to the hood using the screws that were removed in Step 1.
3. On the Protector Fume Hoods only, attach the molded rubber elbow connector directly to the back port connection on the alarm module assembly.
4. Thread the gray colored power supply lead wire assembly through the backside of the corner post and out through the electrical cutout in the corner cover. Attach directly to the connector located on the back of the power module assembly.
5. Insert the clear tubing (9 ft.) through the backside of the corner post and out through the electrical cutout in the corner cover. Attach the tubing directly to the elbow connector, cut to length, NO kinks, (Protector Hood) or the connector located on the back of the power module assembly.
6. Locate the alarm module in the electrical cutout in the corner cover or side panel of your hood, being careful not to pinch either the electrical wiring or sensor tube. Lock the bottom of the alarm module in place by sliding the bottom edge of the assembly down over the edge of the cutout. Next, secure the top of the alarm with the two #6-32 screws. Mounting holes for these screws are located underneath the black label surrounding the electrical cutout. Leave the label in place and secure directly through it to the corner cover.
7. Route the wiring and plastic tubing up the backside of the corner posts and attach as shown. Refer to Installation Drawings.
NOTE: Make sure to keep the tubing and wiring out of the travel area of the sash weights.
Power Supply Module
8. Locate the power supply module on the top of the fume hood liner assembly and use the supplied Velcro strips to secure in place.
9. Drill a 3/8" diameter hole in the hood exhaust collar or blower housing, depending upon your specific model of fume hood. Refer to Installation Drawings for exact locations.
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INSTALLATION
10. Insert the velocity probe into the open end of the vinyl tubing and position the probe in the 3/8" diameter hole drilled in Step 9. RTV the probe in position to complete your installation.
11. Locate caution label directly above the alarm on the appropriate corner cover.
Electrical Connections
12. Note the separate green wire that is routed with the low voltage power supply lead wires (gray colored cable) that come from the power supply module. Route the separate green wire to the outlet box on the hood that powers the hood lighting fixtures. Route the green wire noted above into the rear connector on this outlet box and connect to a secure earth screw inside the outlet box. This green wire provides earth ground to the alarm module to make it less susceptible to electrical noise created by the fluorescent lights.
13. Route the power supply module AC voltage lead wires (black and white wires) down between the fume hood liner and outside wall to the back of the header panel. On standard Protector Fume Hoods, run this wiring inside the header panel through the access hole provided in the right side corner post. Remove the header panel cover plate to gain access for specific wiring connections. Instructions for wiring connections for each style of hood is as follows:
Protector Hoods
115 Volt: Locate the black wire, which connects from the incoming AC power (in the junction box) to the hood light switch. Disconnect this black wire from the light switch terminal and connect the solid black wire in wiring harness #48610. This black wire will have two extra terminals attached – one of these terminals should be reconnected to the light switch terminal. The other terminal should be connected to the unused blower switch terminal located near the center of the blower switch. Next, connect the black/white wire, which is a part of harness #48610 to the remaining blower switch terminal. The final wiring step involves the white wire, which is part of #48610. Locate the white wire that connects to the fluorescent lamps and find the point where it connects, via removable terminals, to the white wire from the junction box. Disconnect the removable terminal and use the white wire (part of #48610) to reconnect the white wires. The other attached white wire provides a connection to the air monitor power supply module.
230 Volt: Locate the black wire, which is connected to the hood blower switch. Disconnect this black wire from the blower switch terminal and connect to the blue wire of #48611 using the attached terminal. Reconnect the remaining terminal of the blue wire (part of #48611) to the original blower switch terminal. Locate the white wire on the blower switch, which is adjacent to the blue wire just connected above. Disconnect this white wire from the blower switch terminal and connect to the brown wire in wiring harness #48611. Reconnect the remaining terminal on this brown wire to the blower switch terminal where the white wire was originally removed.
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INSTALLATION
8 Foot, 230 Volt Hoods with External Blower
230 Volt: Locate the blue wire, which is connected to the blower switch. Disconnect this blue wire from the blower switch terminal and connect to the blue wire in wiring harness #48611 using the attached terminal. Reconnect the remaining terminal of the blue wire (part #48611) to the original blower switch terminal. Locate the brown wire on the blower switch, which is adjacent to the blue wire just connected above. Disconnect this brown wire form the blower switch terminal and connect to the brown wire in wiring harness #48611. Reconnect the remaining terminal on this brown wire to the blower switch terminal where the brown wire was originally removed.
Basic 47 and 70 Fume Hoods
115 Volt: Locate the black wire, which connects from the incoming AC power (in junction box) to the hood light switch. Disconnect this black wire form the light switch terminal and connect to the solid black wire, which is part of #48610. This black wire will now have two extra terminals attached – one of these terminals should be reconnected to the light switch terminal. The other terminal should be connected to the unused lower switch terminal located near the center of the blower switch. Next, connect the black/white wire, which is a par of wiring harness #48610 to the remaining blower switch terminal. Next connect the white wire from wiring harness #48610 to the terminal of the supplied white wire labeled #48616. After this is done, route the stripped end of this white wire along with the yellow blower switch wires into the hood junction box. Tie this white wire inside the junction box to the other white wires from the blower, light, etc., using a wire nut. Insulate the unused terminal on the white wire of wiring harness #48610 by removing the terminal, stripping the wire and installing a wire nut.
230 Volt: Locate the black wire, which is connected to the hood blower switch. Disconnect this black wire from the blower switch terminal and connect to the blue wire of wiring harness #48611 using the attached terminal. Reconnect the remaining terminal of the blue wire in harness #48611 back to the original blower switch terminal location. Locate the white wire on the hood blower switch, which is adjacent to the blue wire just connected above. Disconnect this white wire form the blower switch terminal and connect to the brown wire of harness #48611. Reconnect the remaining terminal on this brown wire to the blower switch terminal where the white wire was originally removed.
Perchloric Acid Hoods
Locate the black wire, which is tied to wiring harness #48610. Cut the tie and discard the black wire, which features 3 terminals, as it is not required. Locate the white wire in wiring harness #48610. Connect the terminal of this white wire back to the terminal of the white wire #48616.
After this is done, route the stripped end of this white wire along with the yellow blower switch wires into the hood junction box. Tie this white wire inside the junction box to the other white wires from the blower, light, etc., using a wire nut. Insulate the unused
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