AERCO BMK 3.0 LN Nat. Gas Jan 2011 - Manual (Page 53)

MAINTENANCE
CHAPTER 7 MAINTENANCE
7.1 MAINTENANCE SCHEDULE
The unit requires regular routine maintenance to
keep up efficiency a nd r eliability. F or bes t
operation and l ife of the unit, th e f ollowing
routine m aintenance procedures s hould be
carried out in the time periods specified in Table
7-1. S ee A ppendix I f or a c omplete CSD- 1
inspection check list.
In or der to perform the m aintenance tas ks
specified i n T able 7 -1, the f ollowing
maintenance k its ar e av ailable thr ough your
local AERCO Sales Representative:
•
Annual Maintenance Kit, Part No. 58025-01
• 24- Month Waterside/Fireside Inspection Kit,
Part No. 58025-04 (See NOTE below)
NOTE
The 24-Month Waterside/Fireside Inspec-
tion Kit also includes the items contained
in the Annual Maintenance Kit. T herefore,
only Kit Par t No. 5 8025-04 is r equired
when per forming the w aterside/fireside
inspections.
Appendix K c ontains recommended spare parts
lists for maintenance of the boiler.
WARNING
TO A VOID P ERSONAL IN JURY,
PRIOR TO SERVICING:
• DISCONNECT THE AC SUPPLY BY
TURNING O FF THE SERVI CE
SWITCH AND AC SUP PLY CIRCUIT
BREAKER.
• SHUT O FF THE G AS SUPPLY AT
THE M ANUAL SHUT -OFF VALVE
PROVIDED WITH THE UNIT
• ALLOW T HE UNIT TO C OOL T O A
SAFE WATER T EMPERATURE T O
PREVENT BURNING OR SCALDING
7.2 IGNITOR-INJECTOR
The ignitor-injector (part no. 58023) is located in
the bo dy of the b urner (see F igure 7- 1). In
addition t o pr oviding t he ignition s park r equired
to light the bur ner, this component also contains
a gas injector tube which connects to the staged
ignition as sembly. T he ig nitor-injector m ay be
hot, therefore, care should be exercised to avoid
burns. It is eas ier t o r emove the i gnitor-injector
from the uni t af ter th e u nit has c ooled to r oom
temperature.
BURNER
HOUSING
FLAME DETECTOR
& GASKET (SECURED
WITH 2 SCREWS)
IGNITOR-
INJECTOR
STAGED
IGNITION
ASSY
Figure 7-1.
Burner Assembly – Top View
To ins pect/replace th e Ign itor-injector, pr oceed
as follows:
1. Set the ON/OFF switch on the c ontrol panel,
to the OFF pos ition. Dis connect AC p ower
from the unit
2. Remove th e t op and s ide pan els f rom the
unit.
3. Disconnect the cable from the ignitor-injector.
4. Using a 7/ 16” ope n-end wr ench, dis connect
the compression nut securing the gas injector
tube of the ignitor-injector to the el bow of the
staged i gnition as sembly. Dis connect the
staged ig nition as sembly f rom the ig nitor-
injector.
7-1