1. Introduction
The K-Tech ET98-LD Lobby Display is designed to provide visual and audible alerts for phone line loss, specifically when integrated with the K-Tech ET98 Line Loss Monitor (sold separately). This manual provides comprehensive instructions for the installation, operation, and maintenance of your ET98-LD unit.
2. Product Overview
The ET98-LD is a crucial component in emergency communication systems, alerting personnel to a failure in a monitored phone line. Its durable brushed stainless steel enclosure is suitable for public areas.
Figure 1: Front view of the K-Tech ET98-LD Lobby Display. The display features a speaker grille, "ELEVATOR COMMUNICATION FAILURE" text, and a 'BUZZER RESET' key switch.
Key Features:
- Brushed stainless steel enclosure for durability and aesthetic appeal.
- Red flashing LED indicator for visual fault notification.
- Audible buzzer for immediate sound alert.
- Key reset switch to silence the buzzer while the LED continues to flash until the line is restored.
- Flush mounted design for seamless integration.
- Two-wire hook-up for simple connection to the ET98 Line Loss Monitor.
- Does not require external power; powered by the ET98 Line Loss Monitor.
Typical Applications:
- Emergency responder locations
- Security stations
- Help desks
- Mechanical rooms
- Maintenance offices
- Public notification of elevator communication failure
3. Setup and Installation
The ET98-LD is designed for straightforward installation. It requires connection to a K-Tech ET98 Line Loss Monitor (sold separately).
Installation Steps:
- Mounting Location: Select a visible location, such as a hallway, lobby, or control room, where the display can be easily seen and heard. The brushed stainless steel enclosure is designed for flush mounting.
- Wiring: Connect the two-wire output from the K-Tech ET98 Line Loss Monitor to the corresponding input terminals on the ET98-LD Lobby Display. Ensure proper polarity as indicated in the ET98 Line Loss Monitor's manual. The ET98-LD draws its power directly from the ET98 unit.
- Secure Mounting: Secure the ET98-LD unit firmly in its chosen location using appropriate fasteners.
- Testing: After installation, perform a test by simulating a line loss event on the phone line connected to the ET98 Line Loss Monitor. Verify that the ET98-LD's red LED flashes and the audible buzzer activates.
4. Operating Instructions
The ET98-LD operates in conjunction with the K-Tech ET98 Line Loss Monitor.
Normal Operation:
Under normal conditions, with the phone line functioning correctly, the ET98-LD Lobby Display will remain inactive (LED off, buzzer silent).
Fault Indication:
When the K-Tech ET98 Line Loss Monitor detects a phone line failure (e.g., line cut, power loss to the phone), it sends a signal to the ET98-LD. Upon receiving this signal, the ET98-LD will:
- The red LED will begin to flash continuously.
- The audible buzzer will sound.
Buzzer Reset:
To silence the audible buzzer, insert the provided key into the 'BUZZER RESET' switch and turn it. The buzzer will cease, but the red flashing LED will continue to operate. This ensures that a visual alert remains active until the phone line issue is resolved.
The LED will only stop flashing once the phone line fault has been repaired and the K-Tech ET98 Line Loss Monitor no longer detects a fault.
5. Maintenance
The K-Tech ET98-LD Lobby Display is designed for minimal maintenance.
- Cleaning: Periodically wipe the stainless steel enclosure with a soft, damp cloth to remove dust and smudges. Avoid abrasive cleaners or solvents.
- Functionality Check: It is recommended to periodically test the system by simulating a line loss event to ensure the ET98-LD is functioning correctly. Consult the ET98 Line Loss Monitor manual for testing procedures.
- Key Management: Keep the buzzer reset key in a secure, accessible location known to authorized personnel.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| LED not flashing and buzzer not sounding during a line fault. | 1. No signal from ET98 Line Loss Monitor. 2. Wiring issue between ET98 and ET98-LD. 3. Faulty ET98-LD unit. | 1. Verify the ET98 Line Loss Monitor is functioning and detecting the fault. Check its power supply. 2. Inspect wiring connections for looseness or damage. Ensure correct polarity. 3. If other solutions fail, contact K-Tech support. |
| Buzzer does not silence after using the reset key. | 1. Key not fully turned or switch malfunction. 2. Internal fault in ET98-LD. | 1. Ensure the key is fully inserted and turned. Try turning it firmly. 2. Contact K-Tech support. |
| LED continues to flash after line fault is resolved. | 1. ET98 Line Loss Monitor still detecting a fault. 2. Signal not clearing from ET98. | 1. Verify the phone line is fully repaired and the ET98 Line Loss Monitor has reset. 2. Consult the ET98 Line Loss Monitor manual for troubleshooting its reset mechanism. |
7. Specifications
| Model: | ET98-LD |
| Manufacturer: | K-Tech |
| Compatibility: | K-Tech ET98 Line Loss Monitor (sold separately) |
| Indicators: | Red Flashing LED, Audible Buzzer |
| Controls: | Key Reset Switch (for buzzer) |
| Enclosure Material: | Brushed Stainless Steel |
| Mounting: | Flush Mounted |
| Power Requirement: | Powered by ET98 Line Loss Monitor (two-wire hook-up) |
8. Warranty and Support
For information regarding warranty coverage, technical support, or replacement parts for your K-Tech ET98-LD Lobby Display, please contact K-Tech directly. Refer to the contact information provided with your purchase documentation or visit the official K-Tech website.
Please retain this manual for future reference.
