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The proposed wording of this DCR is replaced as follows in order to clarify & fully detail the changes made to 4009/002 issue 6, as agreed with Manufacturer: RICA, to reflect the introduction of the new type to the specification (i.e. strip heaters).
Note – This Spec is fully retyped using alternate publishing software (was Framemaker; is now WORD2010); some changes in presentation are possible.
See attached draft 4009/002 issue 7 for full details.
1) Para 1.4.2
Table and notes are amended to clarify & detail the addition of strip heaters:
• Delete Note 1 from the Table 1st column header
• Add new column for “Heater Type and Construction” (Individual and/or Strip heater; Single or Double layer heater)
• Variants 01 to 24 & 25 to 48 are separated in the table to clarify the Heater Type and Construction details for each
• New Note 1 is added.
• New Note 3 is added (to specify heating area for both types of heater)(other notes are renumbered accordingly)
• Old Note 3 (now Note 4) is amended to refer to Individual and Strip type heaters
• Resistance Density values for all variants is amended to be: ≤ 200Ω/cm2 (was: 0.1 to 200Ω/cm2)(an additional amendment as requested by RICA to reflect their actual capability)
2) Para 1.4.3
Subpara (a) is amended to also refer to heater type & construction.
3) Para 1.6
• 1st subpara is amended to refer to heater type and construction.
• Existing figure is given the title “Individual Heater”.
• Add new figure “Strip Heater”.
• Dimension table is amended to include strip heater dimensions (dimensions A, B & G)(including a new column “Heater Type”).
• Note 1 is amended to include strip heaters & bridging tabs.
• New notes 2, 3, 4 & 10 are added related to strip heaters (other notes are renumbered accordingly).
• Dimension S, Heating Area, is added to the table (for clarification).
4) Para 1.6.1
Subpara is amended to refer to individual heaters or strip heaters as well as bridging tabs.
5) New Para 1.7.2
Add new Para to detail the requirements for strip heaters’ bridging tabs (other Paras are renumbered accordingly).
6) Old Para 1.7.2 (now Para 1.7.3)
Subpara is amended to also refer to strip heaters bridging tabs.
………………………….
Justification:
as above
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