Servicing - Eclipse RatioMatic 50 User Manual

7.0 Servicing

Blower Motor Replacement
Filter Element Replacement
Spark Plug & Flame Rod Replacement Ignition plugs and flame rods wear out over long periods of normal burner opera-
Figure 7–Ignition Plug & Flame Rod Replacement
50 through 600 Sizes
Rear
Burner Casting
Insulator
Electrode
Packing
Electrode
Nut
Nut
The ignition plug and flame rod for sizes 50 through 600
are identical parts:
• Sizes 50 thru 200:
#13581 for burners fitted with alloy tubes
#13837 for burners fitted with refractory blocks
• Sizes 300 thru 600:
#13581 for burners with tube or block
To remove them:
1. Unscrew the electrode nut and draw the electrode with
insulators out of the burner housing.
To replace them:
1. Loosen the packing nut.
2. Insert the electrode with insulators through the threaded
connection on the back of the housing and slide the
captive insulator into the guide cup in the burner head
until the insulator bottoms out.
3. Tighten the electrode nut into the burner housing.
4. Tighten the packing nut.
See Figure 5 for blower motor replacement. Replacement motors must have the
same nameplate ratings as the original motor.
See Figure 6 for filter element replacement.
tion. For Ratiomatic burners, the part number used as the ignition plug is the same
as that used for the flame rod. Eclipse recommends that the user keep at least
one of these in stock at all times to prevent nuisance shutdowns. See Figure 7
for plug and rod replacement.
Nozzle
Captive
Insulator
Guide Cup
The ignition rod for sizes over 600 are as follows:
Ignition rod:
#150000-5 for 750 through 1250 sizes
#150000-12 for 1500 through 2500 sizes
To remove it:
1. Loosen the compression fitting and draw the electrode
out of the burner housing.
To replace it:
1. Insert the electrode through the fitting and through the hole
in the nozzle cone.
2. Be sure the rod extends through the nozzle so that the
spark occurs in front of, or to the oven side of the nozzle.
If the spark occurs behind the nozzle, the pilot gas may
not ignite and may accumulate to dangerous levels after
several unsuccessful trials for ignition.
3. Tighten the compression fitting. Do not over-tighten, or you
may crack the ceramic insulator and ruin the ignition rod.
15
750 through 2500 Sizes
Ignition
Rod
Loosen
Compression
Fitting
Slide Rod
Through Hole
In Cone