AERCO BMK 2.0 LN Natural Gas 2008 - Manual (Page 50)

MAINTENANCE
Table 7-1 - Maintenance Schedule
PARAGRAPH ITEM 6 Mos. 12 Mos. 24 Mos.
Labor
Time
7.2
Spark Igniter
(GP-122435-S)
*Inspect Inspect Replace 15 mins.
7.3
Flame Detector
(66006)
*Inspect Inspect Replace 15 mins.
7.4
Combustion
Calibration
*Check Check 1 hr.
7.5
Testing of
Safety Devices
See CSD-1
Chart in
Appendix I
20 mins.
7.6 Burner Inspect 2 hrs.
7.7
Condensate
Drain Trap
*Inspect
Inspect &
Clean
15 mins.
* Only performed after initial 6 month period after initial startup.
7.3 FLAME DETECTOR
The flame detector (part no. 66006) is located
on the burner plate (see Figure 7-1). The flame
detector may be HOT. Allow the unit to cool
sufficiently before removing the flame detector.
To inspect or replace the flame detector:
1. Set the ON/OFF switch on the control panel,
to the OFF position. Disconnect AC power
from the unit.
2. Remove the top panels from the unit.
3. Disconnect the flame detector lead wire.
Unscrew the flame detector and remove it.
(See Figure 7-2).
4. Inspect the detector thoroughly. If eroded,
the detector should be replaced. Otherwise
clean the detector with a fine emery cloth.
5. Reinstall the flame detector and flame
detector gasket, if removed.
6. Reconnect the flame detector lead wire.
7. Reinstall the side and top panels on the unit.
7.4 COMBUSTION CALIBRATION
Combustion settings must be checked at the
intervals shown in Table 1 as part of the
maintenance requirements. Refer to Chapter 4
for combustion calibration instructions.
AIR/FUEL
VALVE
BLOWER
BURNER
PLATE
SPARK
IGNITOR
BURNER
FLAME
DETECTOR
BLOCKED
INLET
SWITCH
BLOWER
PROOF
SWITCH
Figure 7-2
Burner Assembly Spark Igniter and
Flame Detector Location
7.5 SAFETY DEVICE TESTING
Systematic and thorough tests of the operating
and safety devices should be performed to
ensure that they are operating as designed.
Certain code requirements, such as ASME
CSD-1, require that these tests be performed on
a scheduled basis. Test schedules must
conform to local jurisdictions. The results of the
tests should be recorded in a log book. See
Chapter 6-Safety Device Testing Procedures.
7-2