COOK HMD EN - Manual (Page 8)

8
Do not enlarge burner ports when clearing a blockage,
performance could be affected.
Replace or tighten any loose or missing fasteners on
the mixing plates. Always use zinc plated or stainless
steel fasteners.
Inspect and clean the flame and spark rod. Occasional
replacement of the flame rod and spark rod may be
necessary to ensure optimum unit performance.
Flame rods can last many years, but because of
thermal expansion of the porcelain, flame rods can fail
over time.
Gas Train
The gas connections, joints and valves should be
checked annually for tightness. Apply a soap and water
solution to all piping; watch for bubbling which indicates a
leak. Other leak testing methods can be used.
CFM / Static Pressure chart
Model # Low CFM Low SP High CFM High SP
2400 680 0.05 2400 0.94
3400 2000 0.2 3400 1
4100 3000 0.35 4100 1.1
Parts
To replace parts, contact a COOK representative.