Routine Safety Checks; Flame Detection System (Ird Cell); Routine Maintenance; Combustion Air Fan - Nu-Way XGN Series Handbook

Screen
0 Air and gas setting point P0
1 Air and gas setting point P1
2 Air and gas setting point P2
3 Air and gas setting point P3
4 Air and gas setting point P4
5 Air and gas setting point P5
6 Air and gas setting point P6
7 Air and gas setting point P7
8 Air and gas setting point P8
9 Air and gas setting point P9
10 Most recent fault code
11 Second last fault code
12 Third last fault code
13 Fourth last fault code
14 Fifth last fault code
15 Sixth last fault code
16 Testing time Y2
17 Testing time Y3
18 Flame quality indication (1-4)
19 eBus address
21 Integrated valve test, on/off
22 Lower limit of modulation
23 Upper limit of modulation
24 Controller address
25 Motor speed
26 Motor rotation and reference
Information
R S
OUTINE AFETY
TO BE CARRIED OUT ONLY BY QUALIFIED AND
EXPERIENCED PERSONNEL.
Check that the plant room is ventilated at all times.
Frequently inspect the air inlet of the burner and
ensure that there are no obstructions to air flow.

Flame Detection System (IRD Cell)

With the system set for normal operation, pull
•
out the detector probe and cover it up to cut
off light. Both LED indicators must extinguish.
The control box should switch to lockout or
attempt to re-start the sequence.
Attempt to re-start with the flame detector
•
covered. There must be no indication from
the LED's after the start impulse. The burner
control box must switch to lockout at the end
of the safety interval.
Attempt to start the burner with the detec-
•
tor exposed to stray light e.g. from fluores-
cent lighting, a cigarette lighter or light bulb
(not daylight or an electric torch): The con-
trol box should switch to lockout either im-
mediately or at the end of the pre-purge, as
a result of stray light.
R M
OUTINE AINTENANCE
Switch off electrical supply and gas supply to the
burner.

Combustion Air Fan

Clean the blades regularly with a stiff brush. Access
is obtained through the burner top cover. Care
should be taken to avoid damaging the fan blades.
Check that the air inlet into the fan is clean.

Inner Assembly

Open the hinged extension as follows: -
XGN450 to XGN1000. Remove the split pin from
the hinge pin adjacent the gas train and withdraw
the hinge pin form the hinged extension.
XGN1150 to XGN3000. Remove the 2 locking
nuts and washers securing the hinged extension.
C
HECKS