GcmNetworkManager netMan = GcmNetworkManager.getInstance(this);

PeriodicTask tarea = new PeriodicTask.Builder()
                    .setService(CompruebaValoresService.class)
                    .setPeriod(INTERVALO_MIN*60)
                    .setFlex(INTERVALO_MIN*6)
                    .setRequiresCharging(false)
                    .setPersisted(true)
                    .setUpdateCurrent(true)
                    .setTag(SERVICE_TAG)
                    .build();

netMan.schedule(tarea);