14
Disassembly
※
When disassemble is made, wait until the furnace cools down. Also, be sure to wear protective
gloves.
１
)
Confirm that the power supply to the combustion blower and other power supplies are
OFF.
２
)
Confirm that all gas cocks are closed.
３
)
Loosen the union, etc. of the gas piping.
４
)
Remove the bolts that fix the selector valve 6 to the air flange, and remove the air flange.
At this time, be careful not to lose the packing.
５
)
Remove the air tube of the air actuator 6 and the DIN terminal of the solenoid valve.
６
)
Remove the bolts of the selector valve, and remove the selector valve and the packing.
７
)
Take out the UV tube from the ultra adapter
○
22
.
８)
Remove the plug cap from the spark plug.
９)
Remove the spark plug while directing care to the spark plug not to break its insulator when extracting
it.
１０)
Remove the bolt from the gas body
⑰
, and extract the gas body, the main gas pile
⑳
, the pilot gas
pipe
⑱
, etc.
１１)
Remove the bolt from the pilot air body
⑫
, and extract the pilot air pipe
⑮
, etc.
１２)
Extract the assist air body
⑦
, the assist air pipe
⑩
and the assist air nozzle
⑪
. These components
come off upon the removal of the bolt from the pilot air body.
１３
)
Take out the ceramic balls. For the method of taking them out, refer to “Replacement of Ceramic Balls”
on P. 12. (When the burner body is removed, be sure to take out the ceramic balls first.)
１４
)
Remove the burner body
④
from the burner plate tile
①
. When the burner body is removed, be sure to
replace the seal packing
③
. (Be sure to do this after removing the pilot burner unit.)
１５
)
In reassembling, be sure to apply burn-in preventing agent to the bolts and the thread
portions.
Pilot Nozzle
Replacement
１)
Remove the ignition plug 23. (Since this is vulnerable, it should be removed first.
)
２)
Remove the nozzle unit.
(
Refer to the drawing
.)
３
)
Remove the gas nozzle 21.
４
)
Remove the pilot nozzle 19 and the pilot gas pipe 18. These two have been welded into an
integrated component.
５
)
When reassemble is made, use the disassembly procedures by reversing the order. Be
sure to apply burn-in preventive agent to the threaded portions.
６
)
Mount the ignition plug 23, and confirm the spark condition. Then, mount the nozzle
unit. At this time, be careful not to damage the ignition plug.
７
)
Mount the nozzle unit. At this time, be careful not to damage the ignition plug.
Summary of Contents for HOPE CRU-10
Page 11: ...10 Flow sheet...
Page 18: ...17 Structural drawing...
