DLD
Contents
1. 20 VAC 50 60 Hz Power Consumption 2 VA approximate Isolation Voltage 2500 V Temperature Limits Operating 4 to 131 F 20 to 55 C Storage 40 to 185 F 40 to 85 C Switch Type 2 N O SPST Switch Voltage 9 VDC Electrical Rating 5 A 120 VAC resistive 345 VA inductive Response Times Energize 6 ms approximate Release 2 5 ms approximate Indicators Respective red LED illuminates when leak is detected Enclosure Polycarbonate dust cover Mounting 8 pin octal Weight 8 oz 227 g Agency Approvals UL 508 MAINTENANCE Upon final installation of the Series DLD Dual Channel Leak Detection Relay no routine maintenance is required A periodic check of the system calibration is recommended The Series DLD is not field serviceable and should be returned if repair is needed field repair should not be attempted and may void warranty Be sure to include a brief description of the problem plus any relevant application notes Contact customer service to receive a return goods authorization number before shipping Figure A Copyright 2007 Dwyer Instruments Inc Printed in U S A 10 07 FR R3 443592 04 NEUTRAL HOT ALARM 2 ALARM 1 COND PROBE 1 COND PROBE 2 4 5 6 7 8 1 2 3 L 44 10 31 07 11 22 AM Page 12. Series DLD Dual Channel Leak Detection Relay Specifications Installation and Operating Instructions Bulletin L 44 The Series DLD is a specialized control for monitoring the shaft seal of two submersible pump motors A leak is detected by sensing the status of a resistive float switch installed in the seal cavity When the resistance drops below the sensitivity rating the output relay energizes and the corresponding LED illuminates When the fault condition clears the output relay resets automatically Important Read the following carefully and completely before installing or connecting DLD units Note DO NOT exceed specified electrical rating Doing so may result in damage to control unit and load device INSTALLATION 1 Lock out all electrical current to relevant control panel during installation 2 Fasten a standard 8 pin octal socket in the control panel 3 Make the appropriate connections as shown in the wiring diagram Figure A to the corresponding numbered contacts on socket 4 Fit the Series DLD controller in the 8 pin octal socket 5 ADJUSTABLE SENSITIVITY MODELS ONLY Set the potentiometer on face of unit to desired resistance 6 Resume power to control panel and monitor system for proper functionality DWYER INSTRUMENTS INC Phone 219 879 8000 www dwyer inst com P O BOX 373 MICHIGAN CITY INDIANA 46361 U S A Fax 219 872 9057 e mail info dwyer inst com SPECIFICATIONS Power Requirement 1
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