Product Overview

2. The scanner and sight pipe must be kept clean to prevent overheating and assure optical quali-

ties.

3. When replacing or cleaning the UV tube, note the position of the tube pins. They are mounted

on a rectangular base so that the tube can only be inserted into the socket with the electrodes

broadside to the shutter window.

CAUTION: DISCONNECT OR SHUT OFF ELECTRIC POWER WHEN WORKING ON

SCANNER.

4. Clean the quartz lens and tube with glass detergent or glass cleaning agents which contain no

abrasives. After cleaning, remove all cleaning films with a soft lint-free cloth. (Some cleaning

films may reduce or filter UV.)

5. Use original FIREYE parts to maintain optimum operation. Recommended spare parts:

Part Number Description

4-314-1` UV Tube

61-2913 Shutter Assembly with Lens

29-248 Flange Gasket

82-95 Lens Holder

46-38 Lens

92-48 Quartz window (Part of Union 60-1199)

FIREYE original equipment factory replacement parts are available at various sub-assembly levels.

TROUBLESHOOTING THE UV SELF-CHECKING SCANNER

The UV self-checking scanner is a fail-safe device. If you are having a problem, make sure that you

are supplying proper voltage to the scanner tube and shutter.

— The two red leads to the tube from the control should be approximately 560 VAC.

— The two black leads from the control to the shutter should be a pulsating 16-24 volt signal

for the 45UV5-1005 and 45UV5-1105 or line voltage for other 45UV5 models. If A or B is a

problem, replace the control or control amplifier. There are two failure modes of the UV

self-check scanner.

1. UV tube failure

2. Shutter failure.

Either of these failures will prevent the burner from operating.

IF THE TUBE HAS FAILED

1. In a semi-automatic FIREYE control (70D40 or FlameWorx) the system will not start if the tube

indicates flame when no flame is present. (Safe start check). Solution — replace UV tube only.

2. In an automatic FIREYE control 70D10, 70D20, 70D30, FLAME-MONITOR and MicroM

control, the control will lockout on safety (during the prepurge) if the tube indicates flame with

no flame present (Safe start check) “False Flame Purge” shown on FLAME-MONITOR control.

Solution — Replace UV tube only.

3. In all systems if the scanner does not indicate the presence of flame (DC voltage on flame

meter) with the scanner looking at the pilot flame or a source of ultra-violet radiation (lighter or

propane torch) replace the UV tube.

IF THE SHUTTER HAS FAILED

In all systems during the pilot trial-for-ignition period the system will shut down and lockout if the

shutter has failed to close or open. Solution — save UV tube — replace scanner. Visual checks can

be made to detect shutter malfunction.