postgresql - Can't restore a dump backup file for Postgres using pg

i generated dump backup file postgres 9.3.4 using this:

pg_dump table_name -u myusername -h localhost -o > backup.dump

now i'm trying backup old database using:

pg_restore -u myusername -n public -d table_name  backup.dump

but keep getting error:

pg_restore: [archiver] input file appears text format dump. please use psql.

please note file not plain sql file since generated using pg_dump.

i used follwoing command:

psql perchwell -u myusername -f backup.dump -v on_error_stop=1

and start receiving following error:

set set set set set set psql:backup.dump:16: error:  schema "propertydir" exists

the default output format of pg_dump plaintext sql script. use psql import or redump -fc flag.

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