You injected amine hydrochlorides and used plain water as solvent. Result: Your (protonated) amines will be most likely eluted in the injection peak, as the interaction with the mobile phase is much stronger than with the solid phase, if you used RP-spherisorb material. If you used NP-material (as the high pressure you've obtained in your HPLC-system suggests), the amines may be strongly adsorbed to the solid phase and may not leave your column at all.
Fur further info look at the HPLC textbook by Kazakevitch and McNair, http://hplc.chem.shu.edu/NEW/HPLC_Book/index.html (http://hplc.chem.shu.edu/NEW/HPLC_Book/index.html)
under the section"pH-effects".