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Calculating Melter Power Requirements A-1 Part 1126931_01 2018 Nordson Corporation Appendix A Calculating Melter Power Requirements Before locating the melter on the production floor or attaching hoses and guns to the …
Calculating Melter Power Requirements
A-1
Part 1126931_01
2018 Nordson Corporation
Appendix A
Calculating Melter Power Requirements
Before locating the melter on the production floor or attaching hoses and
guns to the melter, you must calculate the electrical power required by the
hoses and guns and confirm that the required power does not exceed
maximum allowable wattages. Properly calculating melter power
requirements will prevent damage to the melter and identify the maximum
allowable distance between the melter and the point at which the hot melt is
dispensed.
The following three maximum wattages must be considered when calculating
melter power requirements.
Single‐component maximum — The wattage of any single hose or
gun
Hose/gun pair maximum — The combined wattage of any hose and
gun (hose/gun pair)
Two hose/gun pair maximum — The combined wattage of
hose/gun pairs 1 and 2 or hose/guns pairs 3 and 4
If your Nordson representative has already calculated the hose/gun power
requirements and confirmed that the maximum allowable wattages will not be
exceeded, then no further calculation is necessary. However, you should
re‐evaluate the hose and gun power requirements before you:
add a new hose or gun to the melter that was not factored into the
original wattage evaluation
replace an existing hose with a longer hose or an existing gun with a
larger gun
Calculating Melter Power Requirements
A-2
Part 1126931_01
2018 Nordson Corporation
Evaluate Hose/Applicator Power Requirements
1. Identify all hose/applicator pairs based on the hose/applicator receptacle
to which they are connected.
2. Examine the identification tag or plate on each hose and applicator and
record the wattage of each in Column A of Table A‐1. Enter a zero for any
hose or applicator that is not installed.
3. Add the wattages of each hose/applicator pair and place the sum in
Column B of Table A‐1.
4. Add the wattages of the hose/applicator pairs and place the sum in
Column C of Table A‐1.
5. Compare each of the wattages tabulated in Columns A, B, and C of Table
A‐1 with the associated maximum allowable wattages in TableA‐2, as
appropriate.
6. Do one of the following:
If each of the wattages calculated in step 5 do not exceed the
associated maximum allowable wattages listed in Table A‐2, then the
power required by the hoses and applicators is within acceptable
limits.
If any of the wattages calculated in step 5 does exceed an associated
maximum allowable wattage listed in Table A‐2, then the
configuration or position of the hose/applicator pairs must be
rearranged, shorter hoses must be used, or lower power applicators
must be used in order to reduce the power requirement.