Watt Density

Termination Figure	Mounting Figure	Cold Area
Fig. 1 & 3	Fig. 9,10or20 Fig. 18,19or21	1"
Fig. 1 & 3	Fig. 8 or 11	1" if I.D.4" & width3" all other cases - 3/4"
Fig. 5,6&16	all	1-3/8"
Fig. 4 & 7	all	1-3/4"
T1	Fig. 9&10	1-1/2"
T1	Fig. 8	1"
T2	Fig. 9&10	1-1/8"
T2	Fig. 8	1-3/8"
T3	Fig. 8,9&10	1"

I.D.	Standard Gap
>3/4" - 5"	1/4"
> 5" - 10"	1/2"
> 10" - 16"	3/4"
> 16"	1"

Maintenance and Trouble Shooting
1. Check Fit: The heater I.D. must be the same as the O.D. of the cylinder.
2. Secure Firmly: To compensate for normal expansion, retighten periodically. Cycling and normal metal expansion may cause the heaters to loosen.
3. Eliminate Contamination: Oil, plastic, dirt, etc., will carbonize and shorten heater life.
4. Maintain Proper Voltage: The heater should be rated for the highest voltage anticipated. Operation of a 220 Volt heater on 240 Volt will raise the wattage by approximately 18%, increasing watt density and reducing heater life.
5. Provide Proper Maintenance:
  1. Tighten screw terminals firmly, but avoid excessive pressure.
  2. Protect leads from abuse and abrasion.
  3. Maintain temperature controls and accessories in good working condition to avoid over-temperature operating conditions.