Are the 6095.240 and 6055.240 inter-changable for the DOC 9012 DC skimmer? I ordered the 6055.240 by mistake to replace the 6095.240 on the 9012. Actually, the label on the box is 6055.240 but the model printed on the supply is 09257H. On the supply it say select by a changbale slot, but I do not see the slot. Thanks. If I can just use it safely on the 9012, just let me know.