Description
Product Introduction
The Honeywell LG1093AC01 is a flange-mounted ultraviolet flame detector for GE gas turbine combustion monitoring. It pairs with an EG1033 amplifier to confirm flame presence or trigger a safety shutdown on flame loss.
Two details matter more than the spec sheet. First, the AC01 variant carries CE/ATEX listing in published documentation—verify the actual nameplate, because approval codes vary across the LG1093 family . Second, this is a discontinued product. Honeywell no longer manufactures it, so every unit on the market is surplus or old stock . That changes your procurement calculus: condition and traceability outweigh price.
Installation & Configuration Guide
Phase 1 — Pre-Installation (est. 20 min). De-energize the amplifier circuit. Wait five minutes. Photograph the existing detector’s mounting orientation, cable routing, and nameplate. Verify the replacement is LG1093AC01—not another LG1093 variant with different cable length or mounting . You need an ESD strap, a calibrated multimeter, and the EG1033 wiring diagram for your specific amplifier model.
Phase 2 — Removal (est. 10 min). Disconnect the two-conductor armored cable at the amplifier end first. Label the leads. Loosen the flange mounting hardware. Pull the detector straight out—do not twist, because the viewing window sits close to the combustor sight port. Inspect the old window for clouding or deposits. That tells you whether the sight port itself needs cleaning before the new unit goes in.
Phase 3 — Installation (est. 15 min). ESD strap on. Verify the new detector’s flange dimensions against the removed unit. Apply the specified sight-port gasket—reuse only if it is pliable and undamaged. Seat the detector fully against the mounting face. Torque flange hardware evenly. Route the armored cable without sharp bends or kinks. ❗ Do not splice the cable. The two-conductor armored lead is part of the detector assembly; a field splice introduces noise and a failure point.
Phase 4 — Power-On & Testing (est. 20 min). Verify amplifier supply voltage per the EG1033 model’s requirements—these vary, so check the amplifier nameplate, not the detector. Power the amplifier. Observe the amplifier’s flame relay or output signal. With no flame present, the output should read “no flame.” Use a manufacturer-approved UV source to simulate flame. Confirm the amplifier switches to “flame present” within ~0.1 s. Remove the UV source. Confirm flame-loss response within ≤0.2 s. Log the test in the maintenance record with the detector serial number.
Troubleshooting quick-reference:
- Amplifier reads no-flame with flame present → Check viewing window condition, sight port alignment, and amplifier gain setting.
- Intermittent flame-loss trips → Inspect cable for crush damage or poor termination; check for UV-absorbing deposits on the window.
- Detector appears dead → Verify amplifier is powered and the detector cable is seated; the detector has no separate supply.
